DISTRIBUTION BUSINESS DISTRIBUTION STANDARD: SERVICE AND INSTALLATION RULES DS-I-CA-01

Transcription

1 DISTRIBUTION BUSINESS DOCUMENT TITLE: DISTRIBUTION STANDARD: SERVICE AND INSTALLATION RULES DOCUMENT I.D. NUMBER: DS-I-CA-01 REV NO. DATE REVISION DESCRIPTION APPROVAL 0 Aug 01 Original Issue Prepared by P Findlater Group Manager Asset Management 1 Total Review by C Nye and R Cooper GMSAM 2 Jan 2012 Revision 3 Mar 2013 Revise and Update Metering Assets Manager DS I CA 01 Version 3 Mar 2013 Page 1 of 135

2 TABLE OF CONTENTS General Purpose Publication and revision Administration Publication Revision Scope Reference documents and websites Definitions Aurora s customer charter Connection agreement Compliance with regulation and these rules Necessity to employ a licensed person Offences Access to customers address Contact details Aurora Energy s website Emergency and faults General service connection enquiries Confirmation of customer s authorisation for power connection Service connection and metering Tee-ups Reconnection after long-term disconnection (6 months or greater) (After disconnection by an electrical contractor) Disconnect, reconnection or connection to an existing Aurora Energy overhead or underground service Complex connections where infrastructure / design work is required (including crossover poles) Technical advice AS/NZS 3000: Wiring Rules and fault current levels Technical Advice Metering and Service Installation Rules Technical advice Power quality Technical advice Public and private lighting Connecting to Aurora Network s distribution system Warning against premature expenditure Connecting to a position beyond a neighbour s point of supply Connecting to a neighbour s consumer s mains Connecting to a neighbour s point of supply Examples of connection now not allowed Connection process explained Enquiry and application Design and offer (negotiated connections only) New line construction or alteration (negotiated connections only) Consumer s premises address Generating equipment Parallel generation (embedded generation) Forms Safety requirements Testing Earthing DS I CA 01 Version 3 Mar 2013 Page 2 of 135

3 2.9 Labelling Cabinets, turrets and service boxes Mains cables consumer end Mains cable Point of supply Consumer s mains MEN earth stake Easements Aurora s service wire or cable Consumer s mains crossing neighbour s land Electrical interference to other customers General Voltage fluctuation due to customer s load Power factor Reconnection of installations with defects or installations without supply for over 6 months Final connection of supply Conditions Resubmission after defect found Electricity supply Supply availability and quality Supply voltages Supply at 230/400 Volts (low voltage) Supply at 230/460 Volts (low voltage) Supply at high voltage Rating of customers mains General Prospective fault current Types of service protection devices I 2 t Characteristics of LV Fuses Point of supply One point of supply General Exceptional circumstances Stratum titled developments General: Installation Options Existing properties with more than one point of supply Asset installation and ownership responsibilities What is installed, owned and maintained by Aurora What is installed by contractor and owned and maintained by customer Overhead and underground services Position of point of supply and private service pole General Position of overhead point of attachment and private service poles Temporary overhead supply Overhead supply to a temporary private service pole Permanent overhead supply Overhead supply to a permanent private service pole Overhead supply to a permanent point of attachment on building: Supply less than 100 amps per phase: Overhead supply to a permanent point of attachment on building: Supply greater than 100 amps per phase Clearances Clearances to ground and structures DS I CA 01 Version 3 Mar 2013 Page 3 of 135

4 4.4.2 Service pole or private pole clearance to other lines Service poles What is installed by Aurora? What is installed by electrical contractor? Where Aurora's responsibility ends Customer's responsibility Service pole location Service pole arrangements Acceptable service pole types and strengths Service pole footing details Maximum conductor span lengths Service pole location Design principles Low voltage attachment heights Termination 125 x 125 x 5 mm SHS Pole - unstayed Direct to facia / raiser bracket attachment unstayed Maximum spans for various traffic conditions under span core 25 mm 2 LVABC core 25 mm2 LVABC: Intermediate 125 x 125 x 5 mm service pole - unstayed Core 25 mm 2 LVABC: Core 25 mm 2 LVABC: Core 25 mm 2 LVABC: Core 25 mm 2 LVABC Point of attachment Vegetation management New electricity overhead service wire Existing electricity overhead service wire Vegetation clearing work to be by Aurora-accredited contractors Underground supply servicing arrangements Who makes the decision? Underground consumer s mains on a private service pole Underground consumer mains supplied from an Aurora turret, pit or cabinet Underground consumers mains installed on an Aurora pole Large customer loads Consumer mains cable attachment to Aurora poles Safety Approval of attachment: Indemnity form Prohibited cable attachments to Aurora poles Acceptable cable attachments to Aurora poles Claims Installing underground consumer s mains to an aurora pole Installing underground consumer s mains to a private pole Temporary underground supply to temporary or permanent position Access to aurora s turrets and cabinets Cabinets - lockable Underground service box (wall-mounted) Turrets Metering General Location and accessibility of metering equipment DS I CA 01 Version 3 Mar 2013 Page 4 of 135

5 5.2.1 Number of metering positions per property Separation from gas Installations Separation from distribution infrastructure Existing metering installation alterations and additions General Requirements Single installation metering positions Multi-Tenanted premises Total maximum demand of 100 Amps or greater Stratum title developments Example of metering positions which may be approved Provision and security of metering equipment Provision of equipment for direct-connect-metering Installation requirements for metering equipment Ownership and Control Maintenance Location of customer s equipment Security of equipment Un-metered equipment Installation of metering equipment Metering enclosures and locks Approval Fire-proofing meter enclosures Metering enclosure Sizes Metering enclosures standard sizes Minimum option/remote switchboard Minimum option/incorporated switchboard Minimum option/incorporated switchboard/three tariffs Metering enclosures non-standard sizes Meter cleats Installation requirements Metering equipment locks and access Unacceptable access conditions Easy Read (ERT) meters Metering panel size LV installation up to 100 Amp/phase Standard size meter panel Determining panel size and layout Metering wiring diagrams Multiple residential customer metering position Two customers Premises with combined commercial and residential tariffs Load limiters for maximum demand purposes LV installation in excess of 100 Amp/phase Transformer connected metering Transformer connected metering approval Transformer connected metering equipment installation requirements Installation and protection of line side equipment Remote current transformer arrangement Current transformers Transformer connected energy metering - low voltage Customer-owned metering High voltage metering Un-metered supplies DS I CA 01 Version 3 Mar 2013 Page 5 of 135

6 Un-metered supplies (other than public and contract lighting) Un-metered public lighting Metered public lighting Un-metered private lighting Appendix A Appendix A.1 Electrical works request form (EWR) A.2 How to complete an electrical works request (EWR) A.3 Submitting an EWR DS I CA 01 Version 3 Mar 2013 Page 6 of 135

7 SERVICE AND INSTALLATION RULES For connection to the Electricity Distribution Network in Tasmania Aurora Energy authorised when accessed at This document is controlled by Aurora Energy until printed DS I CA 01 Version 3 Mar 2013 Page 7 of 135

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9 GENERAL 1.1 Purpose The purpose of this document is to provide a guide to electrical contractors, designers, consultants, switchboard manufactures and customers to assist them in the process of establishing a connection to Aurora s distribution network. Failure to comply with these rules may result in delays or refusal of connection. 1.2 Publication and revision Administration Aurora Energy administers the development, revision and publication of these rules Publication This document is available by referencing the Aurora Energy website. This edition of the Service and Installation Rules is applicable from October until superseded Revision Although regulations are usually the catalyst for revision, users and interested parties are invited to provide comments and suggestions for the development of the rules at any time. Correspondence for this purpose should be forwarded to ServiceandinstallationRules@auroraenergy.com.au Any revisions to the rules will be published on the Aurora Energy website on the following dates each year: 1 January 1 April 1 July 1 October 1.3 Scope It is up to the user to ensure that they have a current copy of these rules. Hard copies and compact discs are uncontrolled. Check the website to ensure you have the latest copy. This document covers: 1. Connecting to Aurora s distribution system 2. Aurora s low voltage electricity supply 3. Servicing arrangements 4. Metering DS I CA 01 Version 3 Mar 2013 Page 9 of 135

10 5. Aurora contact details 6. Application forms It does not provide a detailed coverage of: 1. A customers installation beyond Aurora s point of supply 2. Electrical licensing and requirements 3. Supply at high voltage 1.4 Reference documents and websites ID No. AS 1026 Title Impregnated paper insulated cables for electricity supply at working voltages up to and including 33kV AS 1033 High voltage fuses (for rated voltages exceeding 1000V) AS 1074 AS 1104 AS 1243 AS 1329 AS 1359 AS 1397 AS AS 1554 AS AS 1650 AS 1657 AS 1674 AS 1746 AS 1795 AS 1824 AS 1939 AS 1966 AS 1977 AS 2005 AS 2006 AS 2053 AS 2067 AS 2086 AS 2209 Steel tubes and tubular for ordinary service Informative symbols for use on electrical and electronic equipment Voltage transformers for measurement and protection Methods for the analysis of zinc and zinc alloys Rotating electrical machines general requirements Steel sheet and strip hot-dipped zinc-coated or aluminium/zinc-coated Electric cables polymeric insulated Structural Steel Welding (known as the Structural Steel Welding Code) Welding of steel structures Hot-dipped galvanized coatings on ferrous articles Fixed platforms, walkways, stairways and ladders design, construction and installation Safety in welding and allied processes Conductors bare overhead hard drawn copper Sheets and boards for electrical purposes Insulation coordination (phase to earth and phase to phase, above 1kV) Degrees of protection provided by enclosures for equipment (IP Code) Electric arc welding power sources Flexible insulating sleeving for electrical purposes Low voltage fuses fuses with enclosed fuse-links High voltage AC switchgear and control gear circuit breakers for rated voltages above 1000V Non-metallic conduits and fittings Switchgear assemblies and ancillary equipment for alternating voltages above 1kV High voltage AC switchgear and control gear metal enclosed rated voltages above 1kV up to and including 72.5kV Timber poles for overhead lines DS I CA 01 Version 3 Mar 2013 Page 10 of 135

11 AS 2279 AS 2374 AS 2430 AS 2481 AS/NZS 3000 AS/NZS 3001 AS/NZS 3010 AS/NZS 3012 AS/NZS 3017 AS 3100 AS 3116 AS 3147 AS 3155 AS 3187 AS 3198 AS 3439 AS 3560 AS 3600 AS 3608 AS 3609 AS 6002 AS AS/NZS Disturbances in mains supply networks Power transformers Classification of hazardous areas All-or-nothing electrical relays (instantaneous and timing relays) Services and Installation Rules Electrical installations buildings, structures and premises (known as the wiring rules) Electrical installations movable premises (including caravans) and their site installations Electrical installations supply by generating set Electrical installations construction and demolition sites Electrical installations testing guidelines Approval and test specification general requirements for electrical equipment Approval and test specification electric cables elastomer insulated for working voltages up to and including 0.6/1kV Approval and test specification electric cables thermoplastic insulated for working voltages up to and including 0.6/1kV Approval and test specification neutral screened cables for working voltages of 0.6/1kV Approval and test specification mineral insulated metal sheathed cables Approval and test specification electric cables XLPE insulated for working voltages up to and including 0.6/1kV Low Voltage Switchgear and control gear assemblies Electric cables XLPE insulated aerial bundled for working voltages up to and including 0.6/1kV Concrete structures Insulators porcelain and glass, pin and shackle type voltages not exceeding 1000V AC Insulators porcelain stay type voltages greater than 1000V AC Domestic electricity metering enclosures Current transformers Electromagnetic Compatibility (EMC) limits No. Title Note: The Australian Standards referred to shall be taken to be the latest revision, including amendments at the time of carrying out the installation. Tasmanian Electricity Code 2006 Electricity Industry Safety and Administration Act 1997 Electricity Industry Safety and Administration Regulation 1999 Electricity Supply Industry Act 1995 Electricity Supply Industry (Price Control) Regulations 1998 Electricity Supply Industry Pricing Order 2002 DS I CA 01 Version 3 Mar 2013 Page 11 of 135

12 Aurora Approved Electricity Prices Current Occupational Licensing Act 2005 Occupational Licensing (Electrical Work) Regulations 2007 Statutory Rules No 165 HEC Service and Installation Bylaws 1993 Statutory Rules No 110 HEC Bylaws 1994 Services and Installation Rules Office of Electricity Standards and Safety Aurora Energy Office of the Energy Regulator Wiring Rules, Frequently Asked Questions Energy Networks Association Standards Australia National Electricity Rules 1.5 Definitions The definitions contained herein apply to these Service and Installation Rules and may vary from definitions contained in other documents. AS/NZS3000 means the Australian and New Zealand standard titled as the Wiring Rules ). Aurora Network means the Network Division of Aurora Energy Pty Ltd (ABN ) Level 2, 21 Kirksway Place, Hobart Tasmania. Authorised Contractor means an electrical contractor authorised by Aurora Energy in writing to perform work on specified assets. Consumer s Mains means the customers mains wiring between Aurora s Point of Supply and the customers main switchboard. Customer s Mains see Consumers Mains Customer is a person who engages in the activity of purchasing electricity supplied through a distribution system to a point of supply. For the purpose of these rules includes a developer. Developer is a person other than Aurora who engages in the construction of electricity infrastructure. Electrical Contractor As defined in Electrical Industry Safety and Administration Act 1997 Electrical Contractors Licence means a licence issued to an individual who meets the criteria of Electrical Standards & Safety and holds a current Tasmanian Electrical Technicians Licence and complies with the Electricity Industry & Administration Act 1997 Section 17. EIN see Electrical Installation Notice Electrical Installation Notice refers to the Electrical certificate of compliance that must be submitted to certify that work undertaken has been performed in accordance with relevant legislation and standards. DS I CA 01 Version 3 Mar 2013 Page 12 of 135

13 Electrical Work As defined in Electrical Industry Safety and Administration Act Electrical Worker As defined in Electrical Industry Safety and Administration Act Electrical Works Request Form is an Aurora Energy document that is used to recover accurate information from contractors and is to be submitted to Customer Connections at Aurora Energy Pty Ltd and is to work in conjunction with current EIN. EWR means Electrical Works Request form. High Voltage means electricity at a voltage exceeding low voltage. Low Voltage means a voltage greater than 50 volts AC, not exceeding 1000 volts. Point Of Attachment means the point at which Aurora s overhead service wire or a customer s aerial consumer s mains are terminated on a customer s building, pole or structure Point of Supply the junction between Aurora Energy s service mains and the consumer s mains. It is the point at which Aurora Energy s asset responsibility ends. This excludes any metering assets owned by Aurora Energy past the point of supply. See Point of Supply in main text for more detail Pole ID this is the unique 6-digit number on pole. Property means a parcel of freehold or leasehold land, or Crown Land held under lease or licence, which may be traversed within its boundaries without crossing a public reserve (including road reserve) or land owned by or vested in a separate person or body. Private Installation is electrical equipment used or intended to be used by a customer supplied from the distribution system. Private Pole means a customer-owned consumer s mains, aerial mains support or consumer s mains line support. (This does not include a raiser bracket.) Private Service Pole see Private pole Service means the first span of low-voltage conductor that crosses private property from Aurora s mains in the street. Where a transformer directly supplies a customer, the service means the first span of low-voltage conductor from the transformer; (except Aurora transformers on private Consumers Mains powerlines). The service does not include the supporting pole or structure at the Point of Attachment of the service on the customer s property. Service pole means a pole installed to provide an intermediate support for the service cable or to improve ground clearances. DS I CA 01 Version 3 Mar 2013 Page 13 of 135

14 Supply means the establishment of a Point of Supply 1.6 Aurora s customer charter Services and Installation Rules Aurora Energy has certain obligations and commitments to its customers regarding its standard of service. These are outlined in Aurora Energy s Customer Charter that are available on Aurora s web site ( 1.7 Connection agreement Aurora cannot connect a customer to the Distribution Network without a formal agreement with an Electricity Retailer. Further agreements with Aurora may be required depending on the connection requirements 1.8 Compliance with regulation and these rules A customer s new installation or the portion of a customer s installation that has been added to or altered electrically, shall comply with the current Electricity Industry Safety and Administration Act and the Regulations and Codes of Practice under the jurisdiction of that Act and other relevant Standards. An electrical installation will not be connected or remain connected to Aurora s distribution network if it is found not to comply with these Service and Installation Rules, Aurora Energy s notices to electrical workers, AS/NZS3000 Wiring Rules or the Tasmanian Electricity Code. Aurora only carries-out a minimum inspection of the installation before connection. The Electrical Certificate of Compliance (EIN) issued by the installing electrician is used to determine if the installation complies. The connection of the installation should not be taken to imply that the installation complies in every respect with the Service and Installation Rules, Wiring Rules or other specification. In order for Aurora to make a connection, the certificate of compliance (EIN) must be completed in accordance with the requirements of the AS/NZS3000 Wiring Rules. The work, any defects and test results, must be adequately described on the EIN as well as registration and contractor details and signature. 1.9 Necessity to employ a licensed person The Electrical Supply Industry Safety and Administration Act 1997 requires that all electrical work carried out on installations connected to, or intended to be connected to Aurora s distribution network, subject to certain exemptions, will be performed by a Registered Electrical Worker(s) 1.10 Offences A person, other than a suitably accredited person authorised by the Aurora Energy to carry out such work, shall not insert or remove a fuse link of a service protective device, make or break any connection (including seals or DS I CA 01 Version 3 Mar 2013 Page 14 of 135

15 locks), dismantle any component part of Aurora Energy s equipment or detach such equipment from its fixing point. Obtaining electricity by fraud is theft. If a person is found guilty of an offence, it could result in the imposition of substantial fines together with an order for damages to compensate the Distributor for any loss and court costs and it may also cause that person to have a criminal record Access to customers address The customer must allow authorised persons and their equipment safe, convenient and unhindered access to the customer s supply address (in accordance with ESI act and EISA act) for the purposes to: 4. Reading the Aurora s meter/s, 5. Connecting or disconnecting supply, 6. Inspecting or testing the electrical installation, 7. Undertake repairs, testing or maintenance of the Aurora Energy s distribution system, 8. Clearing vegetation from Aurora Energy assets Contact details The following list of contacts details designated areas within Aurora Energy that can be used to discuss servicing issues Aurora Energy s website Web address: Emergency and faults For faults and emergencies only: Phone: General service connection enquiries For enquiries about new connections not requiring system augmentation only: Residential: Business: Confirmation of customer s authorisation for power connection To confirm if a customer has an agreement with the retailer for supply of power Residential: Business: DS I CA 01 Version 3 Mar 2013 Page 15 of 135

16 Service connection and metering Where no cross-over pole or Aurora network design work is required: Tee-ups Residential: Business: Tee-up is a commonly used term where an electrical contractors requires a Aurora presence on site to discuss or perform specific tasks. Because tee-ups are resource intensive, it is in the interest of electrical contractors, consumers and Aurora Energy that tee-ups are only requested for the following key functions: 1. Alterations to facia connections 9. Replacing Consumers mains 10. Relocating meters 11. Consumers mains terminations into turrets or cabinets 12. Point of attachment issues 13. Tee-ups are requested by submitting an EWR and ticking the box marked Arrange an on-site tee-up 14. An arranged tee-up becomes an agreed date under the Customer charter Reconnection after long-term disconnection (6 months or greater) (After disconnection by an electrical contractor) Residential: Business: Disconnect, reconnection or connection to an existing Aurora Energy overhead or underground service For enquiries about reconnections or disconnection of an existing supply only: Residential: Business: Complex connections where infrastructure / design work is required (including crossover poles) Includes cross-over poles Phone: Postal address: PO Box 419, Launceston TAS networkcustomersupply@auroraenergy.com. DS I CA 01 Version 3 Mar 2013 Page 16 of 135

17 au Technical advice AS/NZS 3000: Wiring Rules and fault current levels Only to be used if the information is not available in the standard documentation available to all contractors. Phone: Contact: Electrical Compliance Team Manager 1.13 Technical Advice Metering and Service Installation Rules Only to be used if the information is not available in the standard documentation available to all contractors. Phone: Contact: Technical Officer Compliance and Audit Team 1.14 Technical advice Power quality Phone: Technical advice Public and private lighting For enquiries regarding new or existing lighting. Not for faults Phone: Contact: Network Customer Supply DS I CA 01 Version 3 Mar 2013 Page 17 of 135

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19 2. CONNECTING TO AURORA NETWORK S DISTRIBUTION SYSTEM 2.1 Warning against premature expenditure The customer should incur no expense until an application form has been lodged and/or advice received that supply will be given and the conditions under which it will be given. Also, no expense should be incurred in carrying out alterations or additions to an existing installation where system augmentation is required, until advice is obtained on changes in supply arrangements that may become necessary. Where the loading of an installation requires balancing over more than one phase requiring system augmentation or where an extension is required, Aurora may require the customer to contribute to the cost of supply. 2.2 Connecting to a position beyond a neighbour s point of supply Connecting to a neighbour s consumer s mains Connecting a customer s consumer s mains to a neighbour s consumer s mains other than multi-tenanted installations in the same switchboard is not allowed under the Electricity Supply Industry Act Aurora will also not install an Aurora-owned overhead or underground electricity service wire or cable from a private pole across a property boundary to supply a neighbouring customer Connecting to a neighbour s point of supply Connecting supply to a neighbour s point of supply is not allowed under the Electricity Supply Industry Act This includes taking supply from the first private pole on a neighbour s property. DS I CA 01 Version 3 Mar 2013 Page 19 of 135

20 2.2.3 Examples of connection now not allowed Figure 2-1 Connections Not Allowed 2.3 Connection process explained All applications for a new connection or connection alteration will undergo four key stages, however the level of detail and work involved in each stage will depend on whether the application is for a basic connection service or a negotiated connection service. The application process for a connection DS I CA 01 Version 3 Mar 2013 Page 20 of 135

21 alteration request is similar to a new connection size and complexity being the only consideration. This process has been developed in accordance with Chapter 5A of the National Electricity Rules (NER). Full details and application forms can be found at: Enquiry and application In response to a customer application or enquiry the customer will receive a preliminary response from Aurora for their new supply confirming the type of service requested or advising of any issues and or requesting additional information. Aurora may be able to provide an indicative cost with the response, this is not however a formal quote. For Negotiated Services; if the customer decides to proceed to the next step they may need to pay a negotiation fee which will cover the assessment, design and investigation of the proposed connection and preparation of a formal offer for the work required Design and offer (negotiated connections only) On receipt of the completed Application form, Aurora will assess and investigate the proposed connection and either provide a model standing offer if the request is for a basic connection service or negotiate with the customer an offer to connect to Aurora s distribution network if the request is for a negotiated connection service. An Aurora designer will visit the customer s proposed site and then based on their detailed impact assessment Aurora will provide the customer with a formal offer for the new supply work at the proposed site. The customer will need to let Aurora know if they accept the offer and pay the applicable connection charge before construction of the new supply can proceed New line construction or alteration (negotiated connections only) At the construction stage the customer can expect a call from an Aurora representative who will inform them of the planned construction dates. The customer will need to accept Aurora s formal quote and have their site ready for construction to proceed Consumer s premises address Final connection involves Aurora installing the customer s meters and service line following receipt of a request from the customer s energy retailer. The customer s electrical contractor will need to submit an Electrical Works request to that same retailer. The final connection will be completed on an agreed date or within 10 days of Aurora accepting the Retailer request. The process maps for basic and negotiated connections can be viewed at: DS I CA 01 Version 3 Mar 2013 Page 21 of 135

22 d-connection-process.pdf To avoid delays and possible safety issues, it is important that any application to Aurora has the correct consumer address details. Addresses relating to subdivisions are to include the street address not the Lot Number. Address can also include the property ID available on the customer s rate notice. The relevant Aurora pole number should be included. Identification at worksite: The parcel of land (including flat or unit number) corresponding to the address on the EWR should be identified on site. This will enable Aurora s Service Connection team to correctly identify the work location. Work will not be undertaken if the property is not clearly identified. 2.4 Generating equipment Where the customer installs an alternative source of electrical supply, e.g. a standby generator, Aurora must approve the proposed arrangement as per the connection application process (section 2.3 above) Parallel generation (embedded generation) 2.5 Forms Application must be made to Aurora for the installation of facilities that enable the connection of privately owned generation equipment to Aurora s distribution system as per the connection application process (section 2.3 above). All forms relating to connection or alterations to the Distribution Network can be found at: Note: Electrical Standards and Safety, a division of Workplace Standards Tasmania, require an Electrical Installation Notice to advise them of electrical wiring work and compliance. 2.6 Safety requirements Electrical Contractors and all other persons need to be aware of the safety aspects of excavating and operating equipment in the vicinity of Aurora assets. Hazards that exist include, but are not limited to, the following: 1. Machinery impacting on or moving poles. 15. Undermining pole foundations. DS I CA 01 Version 3 Mar 2013 Page 22 of 135

23 16. Below ground assets including electrical cables and earthing systems, gas mains, telecommunication cables. 17. Live overhead conductors. The customer s electrical contractor or any other unauthorised person is not to access Aurora s pole greater than 3 metres above ground level. This includes positioning of ladders and any tools or equipment. No work is permitted on an Aurora SEWR (Single Earth Wire Return) installation. Such work can be hazardous. The Electricity Industry Safety and Administration Act 1997 and Regulations 1999, provides a framework to ensure that electrical contractors and workers are appropriately qualified and regulated to establish safety standards for electrical articles and to provide for the investigation of accidents in the electricity industry and for related purposes. 2.7 Testing The electrical contractor who carried-out the electrical installation work shall perform all necessary tests and ensure that the work complies with the requirements of the Electricity Industry Safety and Administration Act 1997 and Regulations Reference should be made to AS/NZS 3000 and AS 3017 Electrical Installations Testing Guidelines. 2.8 Earthing All installations required to be earthed shall conform to the requirements for the Multiple Earthed Neutral (MEN ) system of earthing as detailed in AS/NZS3000 Wiring Rules unless otherwise approved. A customer s low voltage earthing system must be kept 6 metres away from Aurora s pole type substation pole, or ground mounted substation enclosure. Note: Conductive mediums e.g. metallic pipes, concrete reinforcing mesh, metal fencing can extend earthing system reach and are to be included in clearance distances if applicable. 2.9 Labelling Cabinets, turrets and service boxes All consumer mains are to be tested and positively identified as per AS 3017 and have all conductors clearly and permanently marked. All cables not connected are to be terminated as per AS/NZS Cables are to be marked identifying the correct address. All fuses are to be clearly and permanently marked indicating the correct street address. DS I CA 01 Version 3 Mar 2013 Page 23 of 135

24 2.9.2 Mains cables consumer end The consumer switchboard legend is to clearly indicate the Point of Supply. All consumer mains cables at the switchboard are to have all conductors clearly identified and permanently marked. All cables not connected are to be terminated as per AS/NZS Mains cable Point of supply Consumer underground or overhead mains cables are to have all conductors clearly identified and permanently marked as per AS/NZS 3000/3017. All cables not connected are to be terminated as per AS/NZS Cables are to be marked identifying the correct address Consumer s mains MEN earth stake For testing purposes, Aurora needs to connect to the consumer s MEN earth point. The location of the earthing stake is to be documented in the consumer s mains switch board Easements Aurora s service wire or cable Aurora does not necessarily obtain easements for its service wires or cables if the wire or cable is installed on the property of the customer taking supply and the supply is for that customer only. Aurora does however require an easement if the powerline crosses another customer s property in order to supply the customer. Aurora s current practice is generally not to install Aurora s service wire or cable across a neighbour s property in order to service a customer. An Aurora service pole or turret, or a customer s private service pole positioned at the roadside boundary of the customer s and neighbour s property may be required to achieve this. If crossing a neighbouring landowner s property is unavoidable, then the customer is required to negotiate an easement with their neighbour and pay for any easement and registration costs. This may also include negotiating and paying for any easement costs of an existing Aurora Powerline. All easement arrangements need to be finalised before a service is connected. (See also connecting to a position beyond a neighbour s point of supply.) Consumer s mains crossing neighbour s land A customer whose consumer s mains is to cross a neighbour s property to an Aurora point of supply, is required to obtain an easement over the neighbouring property at their cost before Aurora will provide a connection. DS I CA 01 Version 3 Mar 2013 Page 24 of 135

25 This may also include negotiating and paying for any easement costs of an existing Aurora Powerline on the neighbour s land that does not have an easement. See also connecting to a Neighbour s Supply Electrical interference to other customers General Motor starting, variable speed motors, electric furnaces, and welding machines etc. can cause voltage fluctuations or harmonic disturbance to installations in the general vicinity. A customer s electrical installation is not to cause interference to the electrical supply of other customers. The customer shall meet the requirements of: 1. The Tasmanian Electricity Code, namely a. AS/NZS : Electromagnetic compatibility (EMC) Part 3.7: Limits Assessment of emission fluctuating loads in MV and HV power systems. b. AS/NZS : Electromagnetic compatibility (EMC) Part 3.5: Limits Limitation of voltage fluctuations and flicker in Customer s Mains power supply systems for equipment rated greater than 16 A. c. AS/NZS : Electromagnetic compatibility (EMC) Part 3.3: Limits Limitation of voltage changes, voltage fluctuations and flicker in public Customer s Mains power supply systems, for equipment rated greater than 16 A per phase and not subject to conditional connection. d. The customer s equipment does not introduce harmonic levels in Aurora s supply voltage in excess of those specified in AS/NZS : Part 3.6 Limits Assessment of emission limits for distorting loads in MV and HV power systems. 2. The customer is to arrange to modify or remove the equipment to eliminate the disturbance. Aurora will disconnect the electricity supply in the event of the customer failing to do so. 3. That Aurora has connected an installation or accepted equipment for connection to the electricity supply, shall not exempt the customer from the above requirements Voltage fluctuation due to customer s load Voltage fluctuation measurements are described in the AS/NZS standards and generally require the use of a specifically designed analyzer. Quantities measured include: Pst Short-term Flicker (generally less than 1.0) Plt Long-term Flicker (generally less than 1.0) Dc Relative Voltage Change (generally 3% maximum) Dmax Maximum Voltage Change (generally 4% maximum) DS I CA 01 Version 3 Mar 2013 Page 25 of 135

26 Aurora can provide an estimate of Maximum Voltage Change (Dmax) and Relative Change (Dc) that are likely to be experienced at the connection point. In most cases this can be done by desk-top analysis using details of the customer s load and Aurora s system at the connection point. Short and long-term flicker can only be practically determined by measurement after the load is connected on site. Low Voltage Equipment rated less than or equal to 16 A: Equipment that has a manufacturer s compliance certification to AS/NZS provides the best guidance for acceptable connection. Note that equipment with or without manufacturer s compliance certification is still required to meet the standards outlined in the General section above when the equipment is connected at the location where it is to be used Power factor Supply Voltage Less than 6.6 kv 6.6 kv to 22 kv The power factor for the customer s electrical installation shall not be less than the figure shown in the following table. The customer may be required to install power factor correction equipment at the customer s cost, should the electrical installation power factor vary from this. Power factor range for customer maximum demand and voltage Up to 100 kva Over 100 kva 2 MVA Over 2 MVA Min Laggin g Min Leadin g Min Laggin g Min Leadin g Min Laggin g Min Leadin g kv Table 2-1 Power Factor 2.13 Reconnection of installations with defects or installations without supply for over 6 months Premises that: 1. have been disconnected from Aurora s supply for a period of 6 months or longer, or 2. have defects identified under the Electricity Supply Industry Act, or 3. have defects identified under the Electricity Industry Safety and Administration Act and Regulations, will require certified evidence in the form of an EIN and an EWR to state the installation is safe prior to reconnection. DS I CA 01 Version 3 Mar 2013 Page 26 of 135

27 Note: Safe means conforms to wiring rules at original date that each portion of the wiring was installed Final connection of supply Conditions Aurora reserves the right to not connect an installation. Aurora will only make final connection to the network under the following mandatory conditions: 1. The customer has an agreement in place with an electricity retailer for installation All the required paperwork has been submitted including: 1. EIN. 18. EWR. 19. Indemnity for installation of consumer s mains on Aurora pole form (if required); signed by Aurora and signed by the local council or government office approving access to public land. All work required as part of the complex connection process has been completed That the correct tariff applies All the required tests have been performed in accordance with AS 3000 and Aurora procedures and accurately entered on the EIN The installation has no non compliant / temporary connection ie: 1. Failure to comply with AS/NZS Lack of mechanical protection 3. UG systems not backfilled in accordance with AS/NZS Temporary / temporary permanent installations do not comply with this standard and/or AS/NSZ Switchboard incorrectly labelled or not labelled The servicing arrangement meets the requirements of this standard including: 1. Height and clearance requirements 2. Angle of pull at the POA 3. Cables correctly marked and installed. 4. Termination and service poles meet the requirements of this standard for: a. Clearance. b. KN strength rating c. Maximum span requirements of this standard d. Cables and conduit installed correctly on Aurora and private poles e. Consumer s mains cannot be installed inside Aurora poles f. Correct installation of private poles DS I CA 01 Version 3 Mar 2013 Page 27 of 135

28 5. Metering installations meets the requirements of these rules in the following areas (See - also metering section ): a. Location. b. Meter enclosure. c. Associated equipment. d. Qualified and authorised personnel undertake all work Resubmission after defect found In the event that a servicing and metering connection cannot be connected due to non-compliance (i.e. open trench, insufficient mechanical protection or non-compliant temporary switchboard support) the following process applies: 1. The Service Connections Officer will contact the associated Contractor and advise faults to be rectified. 2. The associated contractor will be required to submit a new Electrical Work Request when the non-compliance has been rectified. 3. Customer Charter will recommence from the new Electrical Work Request submitted date. DS I CA 01 Version 3 Mar 2013 Page 28 of 135

29 3. ELECTRICITY SUPPLY 3.1 Supply availability and quality The electricity supplied to a customer s premises is subject to interruptions in availability and is also subject to fluctuations and other disturbances that affect supply quality. Customers should be aware that some electrical equipment might have inadequate tolerance to variations in the electricity supply. Customers may also need to ensure that specific equipment has sufficient immunity to extreme voltage fluctuations such as those caused by storms and lighting. The purchase of special protective equipment may be necessary. 3.2 Supply voltages Supply at 230/400 Volts (low voltage) The electricity supply is alternating current of approximately sinusoidal waveform. It alternates at a frequency of 50 Hz with a nominal voltage of 230/400 volts from a three-phase four-wire distribution system. The nominal 50 Hz waveform is sinusoidal but may be modulated by other frequencies for electricity distribution control and communication purpose. The Tasmanian Electricity Code requires Aurora to provide supply at a voltage of 230 volts (phase to neutral) at a steady state average over a 5-minute period of within plus 10% (253 volts) and minus 6% (216 volts) and at a frequency of 50 Hz. Under normal conditions Aurora generally desires to maintain a 5-minute steady state average voltage of plus 10% and minus 2% at the point of supply Supply at 230/460 Volts (low voltage) In outlying areas, the supply may be from a single (split)-phase 230/460 volt three wire distribution system. The single-phase voltage range is the same as when provided from a 230/400-volt 4-wire system. (Splitting a phase provides two single-phase supplies with a vector of 180 degrees instead of the normal 120 degrees) Supply at high voltage Electricity supply may also be provided at higher voltages if required. Contact Aurora for advice on supply arrangements. 3.3 Rating of customers mains General Aurora s connection agreement and the National Electricity Rules require that a customer s installation (includes consumer s mains) is adequately designed and effectively coordinates with Aurora s supply. DS I CA 01 Version 3 Mar 2013 Page 29 of 135

30 The consumer mains conductor size is to be selected so that it does not exceed its design limits for the load and that the protection coordinates with Aurora s distribution service protection device Prospective fault current Prospective fault currents vary depending on the location of a customer s point of supply in the distribution system and the type of assets supplying the customer ie size of transformer, size and length of service wire, type of service protection. Where a customer s installation is supplied from Aurora s distribution network along a public road or in a rural environment, the prospective fault current at the connection point is deemed to be: Up to 100 A single phase or three phase service (unless otherwise informed by Aurora) 6 ka Greater than 100 A single phase or three phase service: Consult Aurora Network System Performance Team on Types of service protection devices Aurora may provide a service protection device at the point of supply or elsewhere. If provided, the protection device will generally be one of the following: Service Capacity Required Not exceeding 80 A per phase Protection Device 80 A HRC fuse 80 A up to 100 A per phase 100 A HRC fuse Above 100 A per phase Table 3-1 Service fuse rating Refer to Aurora Note: Aurora may vary the service protection device or rating. The customer may be required to contribute to the cost of alternative protection devices I 2 t Characteristics of LV Fuses Characteristics of LV fuses used by Aurora as service protection devices are given in AS/NZS Low Voltage Fuses fuses with enclosed fuse links (Parts 1 & 3). Pre-arcing I 2 t characteristics of fuses conforming to AS/NZS are as follows: DS I CA 01 Version 3 Mar 2013 Page 30 of 135

31 Fuse Rating Range of Operation Min I 2 t (A 2.s.1000) 80 A A Table 3-2 Service fuse operation Services and Installation Rules DS I CA 01 Version 3 Mar 2013 Page 31 of 135 Max I 2 t (A 2.s.1000) Note: Although at times Aurora s service fuse may provide protection on the consumer s mains from overload and short circuit, the primary purpose of the service protective device is to prevent detrimental effects on the distribution system. 3.4 Point of supply The point of supply is the electrical connection point at the interface of Aurora s distribution system and the customer s installation. For a more detailed explanation see - Definitions:. For most installations, it is the junction between Aurora s service mains and the consumer s mains. The point of supply shall normally be one of the following, as appropriate to the particular property and method of supply: Aurora s underground service cable: The point of supply is the load-side terminals of Aurora s service protection equipment found at the end of Aurora s underground cable. (Generally within a turret, pit or cabinet) Aurora s overhead service wires: The point of supply is: 1. The first point of attachment of the electricity service wire within the property, or 2. Where the power line is carried onto the land by one or more poles. The first pole on the land carrying that power line will be designated as the point of supply. (Note: the pole is generally a customer-owned pole situated on private property). Note: For this to be acceptable to Aurora, the private service pole is to be positioned such that Aurora can erect a single span of overhead electricity service cable from Aurora s overhead distribution mains in the street. Customer s underground mains attached to Aurora s pole: The load-side terminals of Aurora s protection equipment at the beginning of the customer s consumer mains. See - Underground supply servicing arrangements consumer mains attachment to Aurora poles

32 An Aurora distribution line and substation within the property: As for aerial service cable/wires or underground cable. A private HV Line: 1. The first pole on the land carrying that power line; (Note: the pole is customer-owned pole) 2. The consumer s mains terminals of the substation providing the customer s low-voltage supply. (Note: the substation pole, transformer and structure are Aurora-owned and can only be accessed by authorised Aurora personnel). DS I CA 01 Version 3 Mar 2013 Page 32 of 135

33 POINT OF SUPPLY Aurora's Distribution Mains Aurora's Overhead Service Line Customer's Boundary Point of Supply Consumer's Terminals Aurora's Service Fuse Consumer's Mains Aurora's Overhead Service Line Point of Supply Consumer's Terminals Aurora's Service Fuse Aurora's Distribution Mains Customer's Boundary Consumer's Mains Customer's Private Service Pole Consumer's Mains Aurora's Distribution Mains Aurora's Overhead Service Line Aurora's Service Pole Aurora's Overhead Service Line Customer's Boundary Point of Supply Consumer's Terminals Aurora's Service Fuse Consumer's Mains Aurora's Distribution Mains Aurora's Overhead Service Line Point of Supply Consumer's Terminals Aurora's Service Fuse Aurora's Service Pole Customer's Boundary Underground Consumer's Mains Aurora's Distribution Mains Point of Supply Consumer's Terminals Aurora's Service Fuse Customer's Boundary Underground Consumer's Mains Aurora's Distribution Mains Aurora's Underground Service Cable Point of Supply Consumer's Terminals Aurora's Service Fuse Customer's Boundary Aurora's Turret, Pit or Cabinet Generally positioned at the common boundary with adjacent property Underground Consumer's Mains Fig 3-1 Point of supply DS I CA 01 Version 3 Mar 2013 Page 33 of 135

34 3.5 One point of supply General Under normal conditions, Aurora will provide only ONE point of supply to a customer s property. A development on one or more adjacent titles or a multi tenanted development including strata titles, whether staged development or not, will be provided with a single point of supply Exceptional circumstances Aurora may agree to a customer s written request for the provision of an additional point of supply to a property under the following exceptional circumstances: 1. Where the magnitude of the customer s load is such that it would be sound engineering practice to consider more than one point of supply. 2. Where the distance separating the relevant electrical installations is such that it would be sound engineering practice to consider more than one point of supply. A distance greater than 200 m from the existing point of supply would need to apply before a second supply is considered. The customer is required to pay the cost involved in providing an additional supply. This may include Aurora s distribution system augmentation or extension works and any transformer. Aurora must be consulted before commencement of work. AS/NZS 3000 Wiring Rules have conditions that require compliance when multiple supplies are involved. 3.6 Stratum titled developments General: Aurora treats stratum-titled developments as one electrical installation. Aurora will normally only provide ONE underground service to a Stratum Titled Development. Aurora s point of supply will generally be a turret, pit or cabinet preferably located at the boundary with the adjacent block. Site restrictions may dictate other locations for the point of supply. Permanent supply for a stratum titled development is considered a Complex Connection Installation Options Note: As these options require trenching or boring and the installation of turrets, pits or cabinets in a variety of environments, sufficient lead-time needs to be allowed before supply can be made available. DS I CA 01 Version 3 Mar 2013 Page 34 of 135

35 NEW NEW 1Phase NEW or EXISTING Common Property Customer UG Mains NEW 1Phase Aurora Network Turret, Pit or Cabinet (Located on boundary with next block if possible) Aurora Network Pole Aurora Network Service Cable Street SUPPLY FROM OH MAINS NEW or EXISTING Aurora Network Pole Common Property 1Phase Aurora Network Turret, Pit or Cabinet (Located on boundary with next block if possible) Customer UG Mains Street Aurora Network Service Cable SUPPLY FROM OH MAINS NEW Three units with one of the units 2 or 3 Phase NEW NEW 1 Phase NEW NEW 1 Phase NEW or EXISTING Common Property 2 or3 Phase Customer SWB Customer UG Mains NEW or EXISTING Common Property Customer SWB Customer UG Mains Aurora Network Turret, Pit or Cabinet (Located on boundary with next block if possible) Aurora Network Pole Aurora Network Turret, Pit or Cabinet (Located on boundary with next block if possible) Aurora Network Pole Street Aurora Network Service Cable Street Aurora Network Service Cable SUPPLY FROM OH MAINS SUPPLY FROM OH MAINS Fig 3-2 Stratum title supply arrangements DS I CA 01 Version 3 Mar 2013 Page 35 of 135

36 3.7 Existing properties with more than one point of supply Services and Installation Rules Owners of properties provided with multiple points of supply, will generally be required to rationalise the points of supply to one when a major upgrade or addition to the installation(s) is undertaken. This also applies where properties with individual points of supply are combined into one development. 3.8 Asset installation and ownership responsibilities What is installed, owned and maintained by Aurora 1. One span of overhead service wire from Aurora s distribution assets in the street to the customer s point of supply. Or; 2. One span of overhead service wire from an Aurora-owned substation, installed in an Aurora-owned hv power line on private property. Note: In past it was common for single-customer hv powerlines on private property to be customer-owned. In such installations, Aurora owns and maintains the associated substation and substation pole. The customer is responsible for the power line and any consumer s mains. This includes the service wire from the transformer. 3. Aurora may install conduit from Aurora s turret, pit or cabinet to the property boundary. The customer will own and maintain the conduit after installation. 4. Connecting overhead or underground consumer s mains to Aurora distribution system or terminals of an Aurora transformer. 5. The installation of any transformer and its associated support pole and hardware installed on private or public property. 6. Service poles on public property if required. 7. Aurora will manage meters and equipment on meter panel. Note: Meter panels are initially purchased and installed by the electrical contractor at cost to the customer. 8. Service fuses and service fuse fittings. 9. Clearing of vegetation around Aurora service wires on public property. (See also - Vegetation management) What is installed by contractor and owned and maintained by customer 1. Temporary or permanent service poles on private property 2. Note: In some cases, where the power line supplies multiple customers on private property, Aurora may own LV power lines on private property. 3. Any conductors (consumer s mains) after Aurora s service span. 4. Mains connector box 5. Switchboard and switchboard enclosure 6. The customer will make the initial purchase of the meter panel and provide installation. Aurora undertakes future maintenance of this panel. DS I CA 01 Version 3 Mar 2013 Page 36 of 135

37 7. The customer retains the maintenance and ownership responsibilities of conduit from turret pit or cabinet to property boundary if in underground residential subdivision (Aurora may provide and install). 8. The customer must ensure that vegetation is clear of service wire and consumer s mains on private property. (See - Vegetation management and maximum conductor span lengths) 9. Any raiser bracket DS I CA 01 Version 3 Mar 2013 Page 37 of 135

38 This page deliberately left blank DS I CA 01 Version 3 Mar 2013 Page 38 of 135

39 4. OVERHEAD AND UNDERGROUND SERVICES 4.1 Position of point of supply and private service pole General Services and Installation Rules An Aurora point of supply may already exist on public land in the vicinity of the development or it may require new Aurora assets to be constructed. The position of the point of supply is to be acceptable to Aurora and is to be on a least cost technical basis. If a customer requests a point of supply position that adds unnecessary costs to Aurora s distribution system, the customer is required to pay for any additional Aurora assets and installation costs Position of overhead point of attachment and private service poles The Point of Attachment to Aurora s electricity service wire will be to the customer s building or the first private service pole or temporary private service pole on the customer s property. Points of Attachment and private service poles are to be positioned such that: 1. Aurora can erect a single span of overhead electricity service wire from Aurora s overhead distribution mains in the street without crossing any third party property requiring an easement 2. Pole strength rating and point of attachment anchorage strength rating, is not exceeded by conductor span length or stringing tension. 3. Poles are at their correct footing depth. 4. The point of attachment is at the required height. 5. Aurora s service conductors and customer consumer s mains: a. Have the required clearance to ground, buildings, structures and vegetation b. Are not over tensioned. c. Do not cross a neighbour s property d. Do not cross a hazardous area as defined in AS/NZS 3000 Wiring Rules 6. Tree clearing is avoided where possible and should be carried out prior to the service being installed. See -: Maximum service conductor span length Clearances Service Poles Components: Easements DS I CA 01 Version 3 Mar 2013 Page 39 of 135

40 Vegetation management. 4.2 Temporary overhead supply Overhead supply to a temporary private service pole A temporary private service pole is to meet the requirement of poles included in this section. This includes the footing of the pole. Struts or braces supporting a pole are not permitted. The base of the meter panel is to be installed a minimum of 1200 mm from ground level while the top is to be a maximum of 1800 mm from ground, See also: Clearances Maximum Conductor Span Lengths Vegetation Management 4.3 Permanent overhead supply Overhead supply to a permanent private service pole A private service pole is to meet the requirement of poles included in this section. This includes the footing of the pole. See also: Clearances Maximum Conductor Span Lengths Vegetation Management Overhead supply to a permanent point of attachment on building: Supply less than 100 amps per phase: See - Point of attachment Overhead supply to a permanent point of attachment on building: Supply greater than 100 amps per phase On receiving of an Electrical Work Request Form (EWR), Aurora will arrange a point of attachment together with the necessary technical requirements to supply the required load. 4.4 Clearances Clearances to ground and structures DS I CA 01 Version 3 Mar 2013 Page 40 of 135

41 Fig 4-1 Clearances to ground and structures DS I CA 01 Version 3 Mar 2013 Page 41 of 135

42 Fig 4-2 Service clearances requirements 1 DS I CA 01 Version 3 Mar 2013 Page 42 of 135

43 Fig 4-3 Service clearance requirements 2 DS I CA 01 Version 3 Mar 2013 Page 43 of 135

44 ABN Services over roofed-areas are restricted to applications that are unavoidable because Linespersons maybe placed in potentially UNSAFE situations when service repairs are required eg: Linespersons could be forced to work from an earthed platform (metal roof) instead of an insulated platform (EWP or Ladder). Verandahs may not be structurally sound. Damage may be sustained to the roof area when access is required. Service conductor may come in contact with the roof due to conductor movement due to severe wind conditions. Service over roofed areas are only permitted when the following conditions are met: The Service route over the roof is unavoidable. The Point of Attachment and Service Fuse(s) must be accessible from a ladder firmly footed on the ground. Service Fuse(s) must be accessible directly from ground level to enable disconnection of supply by fuse sticks. * The minimum clearance between the roof and the Service Line is 2.0m after sag and cable swing is taken into consideration. Eg vertical clearance over a roof situated under the centre of a 46m span of 25mm 2 2 core AL XLPE, will normally mean a vertical clearance of 2.3m at a stringing temperature of 15 O C. The wiring connecting Aurora s aerial service conductors to the customer s installation is required to be at arms length, (nominally 2.5m vertically 1.25m horizontally) from ground or elevated area. Refer to Australian Standards Wiring Rules fig 1.1 External access must be provided on to balconies etc to allow a ladder to be carried up so access to the Point of Attachment is obtained. O/H SERVICES & CONSUMERS MAINS SERVICE CABLE OVER BUILDINGS DRAWN: J. SPENCE DESIGNED: R. CRUMP APPROVED GMSAM: D-OH1-1.6/59 DSD-OH1-1.6/59 REV:5 13 NOV 07 PAGE: 55 of 75 Fig 4-4 Services over buildings DS I CA 01 Version 3 Mar 2013 Page 44 of 135

45 4.4.2 Service pole or private pole clearance to other lines Fig 4-5 Service clearance requirements 3 DS I CA 01 Version 3 Mar 2013 Page 45 of 135

46 4.5 Service poles What is installed by Aurora? Aurora will install an Aurora service pole in the road reserve where it is needed to: 1. Maintain the required clearance over the public road or street. This includes clearance over the roadside to the property boundary. 2. Install the services to two or more customers. 3. Avoid a new service wire crossing a neighbour s property, where the path of the service wire is not on an existing easement. Note: Service wires erected prior to November 1996 are generally on a 1 m Aurora easement. 4. Not disadvantage a customer whose property to be connected is on the other side of the road/street to Aurora s distribution line. Note: If a raiser bracket at the point of attachment can avoid the installation of an Aurora pole, then the customer is to provide and install a raiser bracket at the customer s cost What is installed by electrical contractor? Aurora will require a customer to install a private service pole and raiser bracket (If necessary) on the customer s property to enable the service to be connected to the customer s point of attachment where: 1. a single span of overhead service wire would exceed the service span limit from Aurora s distribution mains. If the distribution mains are on the opposite side of the street then, the maximum length can be taken from the nominal position that distribution mains would occupy if constructed on the same side of the street as the premises requiring supply. 2. it is necessary to maintain the required clearance over the customer s private property. 3. it is necessary to avoid any obstruction such as a building or tree on the customer s property. This pole is a private pole for which the customer is responsible for any future renewal or other maintenance work. Note: If a raiser bracket at the point of attachment can avoid the installation of an Aurora pole, then the customer is to provide and install a raiser bracket at the customer s cost Where Aurora's responsibility ends The termination of Aurora s service wire on the customer s first private service pole, temporary private service pole or point of attachment DS I CA 01 Version 3 Mar 2013 Page 46 of 135

47 4.5.4 Customer's responsibility The customer is responsible for all assets (except meters and service fuse) on the customer s installation side of the termination of Aurora s service wire. This includes any raiser bracket Service pole location See - Conductor/General Design Principles Service pole arrangements SERVICE POLE OWNERSHIP in Overhead Areas Aurora Pole Customer Pole Overhead Underground Building / Residence Property Boundary Service Span Limit Low ground clearance Tree or Building Low ground clearance or Tree Road Notes: Service Span Limit is based on: maximum conductor span length tables in SI Rules attachment heights and achieving ground and structure clearances in SI Rules If Aurora service pole can be ommitted by the installtion of raiser bracket at POA, then customer is to provide and fit raiser bracket. Aurora Pole Private Pole Road Example of 4 Low ground clearance on private property Service Span Limit Nominal Position Road Low ground clearance on road or public land Low ground clearance Service Span Limit Fig 4-6 Service pole arrangements DS I CA 01 Version 3 Mar 2013 Page 47 of 135

48 4.5.7 Acceptable service pole types and strengths ACCEPTABLE POLE TYPES AND STRENGTHS Pole Length Overall m Pole Type Minimum Girth Depth in At Top 2m From Butt Ground D (over m sapwood) Galvanised Steel 125 x 125 x 5 SHS Grade 350 PI Hardwood 4kN PI Hardwood 6kN PI Hardwood 4kN PI Hardwood 6kN PI Hardwood 4kN PI Hardwood 6kN PI Hardwood 4kN PI Hardwood 6kN Height of Pole Above Ground m Max Allowable Horizontal Force at Pole Top kn NOTE The Customer may sink the hole and erect the pole, but an inspection of the pole and the hole when dug to full depth will be made by the Electrical Contractor before the pole is erected, to ensure that the pole and the hole comply with this standard. The date of erection shall be marked on the pole. A private Pole that is not included in the above list is not permitted unless it has been certified by a recognised structural engineer specialising in wood pole strengths. The engineer shall specify the following: 1. The minimum diameter at ground level and at the pole top. 2. The strength rating of the pole (Nominated in kn at the tip, marked permanently on the pole at 3450mm from the butt.) 3. The wall thickness for steel poles (Steel to be galvanised) 4. The required buried depth. (A mark is to permanently labelled at 3450mm from the butt) 5. The species of timber if a natural wood pole is used ( permanently marked on the pole) 6. The minimum rim thickness of wood for a Safety Factor of 2.5, 1.5 and The treatment at and below ground line to inhibit the promotion of corrosion, Soft Rot and Heart Rot (whichever is applicable) OVERHEAD SERVICES & CONSUMERS MAINS POLES FOR CONSUMER MAINS DRAWN: JOHN SPENCE APPROVED DESIGNED: N/A GMSAM : D-OH1-1.6/7 DSD-OH1-1.6/7 REV:2 27 SEPT 05 PAGE: 17 of 75 Fig 4-7 Pole types DS I CA 01 Version 3 Mar 2013 Page 48 of 135

49 4.5.8 Service pole footing details Fig 4-8 Pole footing details DS I CA 01 Version 3 Mar 2013 Page 49 of 135

50 4.6 Maximum conductor span lengths Service pole location In general, the customer owns service poles located on private property while Aurora owns those situated on public land. The service pole location will be dependent primarily on: 1. Achieving acceptable conductor ground clearance for the traffic conditions under Span A 2. Ensuring that the load rating at the top of the pole is not exceeded. 3. Ensuring that the designed clamping force on the conductor s insulation is not exceeded. 4. Avoiding service conductors crossing a neighbour s property. 5. Visual environmental considerations Design principles 1. Aurora will only service to a proprietary service steel service pole rated at 2 kn or greater or a proprietary service connection/raiser bracket rated at 1kN or greater 2. Ground clearance is based on an initial conductor stringing at 5.6% CBL at 5 o C and a conductor operating temperature of 75 o C 3. Pole-Top Force is based on a 500 Pa, 15 o C wind force on Conductor and 1200 Pa force due to wind on square pole. 4. Facia attachment force is based on 350 Pa, 15 o C wind force on Conductor. 5. The effect of pole wind loading on the resultant conductor loading has been approximated to being in-line with the resultant conductor force for an intermediate pole and perpendicular to conductor force on an unstayed termination pole. 6. Ensuring that the clamping force on the conductor s insulation does not exceed 28% of the Conductor s designated Breaking Load (CBL) Low voltage attachment heights The following table lists some approximate overhead low-voltage attachment heights for Aurora assets. These heights do not apply for all Aurora poles as local conditions may require heights for Aurora s assets. Aurora Pole Pole Assets Approx Height from Pole Top Pole Depth in Ground Low Voltage Attachment Height Above Ground (m) (m) (m) (m) 8.0 SHS LV ABC Bare Low Voltage LV ABC Bare Low Voltage DS I CA 01 Version 3 Mar 2013 Page 50 of 135

51 10.5 LV ABC HV + Bare LV HV + LV ABC HV + Bare LV HV + LV ABC HV kva Transformer + Bare LV HV kva Transformer + LV ABC HV kva Transformer + Bare LV HV kva Transformer + LV ABC Table 4-1 Pole attachments heights Termination 125 x 125 x 5 mm SHS Pole - unstayed Pole A Pole B POS Aurora's Distribution Mains Traffic Conditions SHS Service Pole Span A UG Cable Fig 4-9 Unstayed termination pole The Service Pole location will be dependent primarily on: 1. Achieving acceptable conductor ground clearance for the traffic conditions under Span A 2. Ensuring that the loading at the top of the pole is not greater that 2 kn 3. Ensuring that the clamping force on the conductor s insulation does not exceed 28% of the Conductor s designated Breaking Load (CBL) Notes: 1. Ground clearance is based on an initial conductor stringing of 5.6% CBL at 5oC, and a conductor operating temperature of 75 o C 2. The Pole-Top Force is based on 500 Pa 15oC wind force on Conductor and 1200 Pa force due to wind on square pole. 3. The effect of pole wind loading on the resultant conductor loading has been approximated to being perpendicular to the resultant conductor force. DS I CA 01 Version 3 Mar 2013 Page 51 of 135

52 8 M 2KN 125 mm x 125mm SHS Service Termination Pole (Pole B) (6.5m attachment height) Traffic Conditions Services and Installation Rules 1. Over roads, or in caravan parks or where farm machinery could operate 2. Over footpaths or over driveways 3. Over ground that has no vehicles trafficking or has no footpaths or driveways Note: Traffic conditions assumed to be under lowest point of conductor sag. Attachment Height at Aurora Pole (Pole A) (Span A) 2 Core 25 mm2 LVABC 4 Core 25 mm2 LVABC (Span A) Traffic Conditions (m) (m) (m) (m) (m) (m) (m) Table metre SHS steel pole DS I CA 01 Version 3 Mar 2013 Page 52 of 135

53 4.6.5 Direct to facia / raiser bracket attachment unstayed Services and Installation Rules Pole A Aurora's Distribution Pole Aurora's Service Wire Facia / Raiser Bracket Attachment POS Traffic Conditions Span A Fig 4-10 Termination of fascia / raiser bracket The Facia Attachment location will be dependent primarily on: 1. Achieving acceptable conductor ground clearance for the traffic conditions under Span A 2. Ensuring that the loading at the facia attachment or raiser bracket is not greater that 1 kn Notes: 1. Ground clearance is based on an initial conductor stringing of 4.5% CBL at 5 o C, and a conductor operating temperature of 75 o C for 2 Core 25 mm2 LVABC. 2. Ground clearance is based on an initial conductor stringing of and 3.35% CBL at 5 o C, and a conductor operating temperature of 75 o C for 4 Core 25 mm2 LVABC. 3. The force at the facia is based on a 350 Pa 15 o C wind force on the conductor. 4.7 Maximum spans for various traffic conditions under span core 25 mm 2 LVABC Traffic Conditions: 1. Over roads, or in caravan parks or where farm machinery could operate 2. Over footpaths or over driveways 3. Over ground that has no vehicles trafficking or has no footpaths or driveways Notes: 1. Traffic conditions assumed to be under lowest point of conductor sag 2. Clearances and spans are for flat ground only DS I CA 01 Version 3 Mar 2013 Page 53 of 135

54 3. Ground clearance is based on an initial conductor stringing reference of 4.5% CBL at 5 o C and a conductor operating temperature of 75 o C Attachment Height Traffic Conditions Attachment Height Traffic Conditions At Pole: (m) At Facia: (m) Max Span (m) At Pole: (m) At Facia: (m) Max Span (m) Table core 25 mm 2 LVABC DS I CA 01 Version 3 Mar 2013 Page 54 of 135

55 core 25 mm2 LVABC: Traffic Conditions: 1. Over roads, or in caravan parks or where farm machinery could operate 2. Over footpaths or over driveways 3. Over ground that has no vehicles trafficking or has no footpaths or driveways Notes: 1. Traffic conditions assumed to be under lowest point of conductor sag 2. Clearances and spans are for flat ground only 3. Ground clearance is based on an initial conductor stringing reference of 4.5% CBL at 5 o C and a conductor operating temperature of 75 o C Attachment Height Traffic Conditions Attachment Height Traffic Conditions At Pole: (m) At Facia: (m) Max Span (m) At Pole: (m) At Facia: (m) Max Span (m) DS I CA 01 Version 3 Mar 2013 Page 55 of 135

56 Table core 25 mm 2 LVABC Intermediate 125 x 125 x 5 mm service pole - unstayed Pole A Pole B Aurora's Distribution Mains H SHS Service Pole h Facia Attachment h' Span A Span B Pole A Pole B Span A Span B Angle of Deviation Fig 4-11 Span definition The Service Pole location will be dependent primarily on: 1. Achieving acceptable conductor ground clearance for the traffic conditions of the spans either side of the pole. 2. Ensuring that the loading at the top of the service pole is not greater that 2 kn 3. Ensuring that the loading on any building support is not greater that 1 kn 4. Ensuring that the clamping force on the conductor s insulation does not exceed 28% of the Conductor s Designated Breaking Load (CBL) 5. Ensuring that the pole has adequate footing strength to remain vertical for its full life. DS I CA 01 Version 3 Mar 2013 Page 56 of 135

57 Core 25 mm 2 LVABC: Span A: Over Road and Span B: Over Driveway or Footpath Facia attachment height (h ): 4.5 m and greater Service Pole attachment height (h): 6.5 m Note: 1. Max Span B length to achieve required ground clearance is 15 m. 2. For angles of deviation greater than 60 o, consult Aurora 3. Flat ground has been assumed H (m) Ang of Dev Up to (Deg) Span A Up to (m) Span B Up to (m) H (m) Ang of Dev Up to (Deg) Span A Up to (m) Span B Up to (m) Table core 25 mm 2 LVABC DS I CA 01 Version 3 Mar 2013 Page 57 of 135

58 Core 25 mm 2 LVABC: Span A: Over Road Span B: Over Untrafficked Land: Facia attachment height (h ): 3 m and greater Service Pole attachment height (h): 6.5 m Note: 1. Max Span B length to achieve required ground clearance is 43 m. 2. For Angles of Deviation greater than 60 o, consult Aurora. 3. Flat ground has been assumed H (m) Ang of Dev Up to (Deg) Span A Up to (m) Span B Up to (m) H (m) Ang of Dev Up to (Deg) Span A Up to (m) Span B Up to (m) DS I CA 01 Version 3 Mar 2013 Page 58 of 135

59 Table core 25 mm 2 LVABC deviation DS I CA 01 Version 3 Mar 2013 Page 59 of 135

60 Core 25 mm 2 LVABC: Span A: Over Road and Span B: Over Footpath or Driveway Facia attachment height (h ): 4.5 m and greater Service Pole attachment height (h): 6.5 m Note: 1. Max Span A length to allow separate construction or disconnection of Span B is 30 m 2. Max Span B length before exceeding clearance over footpath or driveway is 14 m 3. For Angles of Deviation greater than 60 o, consult Aurora. 4. Flat ground has been assumed H (m) Ang of Dev Up to (Deg) Span A Up to (m) Span B Up to (m) H (m) Ang of Dev Up to (Deg) Span A Up to (m) Span B Up to (m) Table core 25 mm 2 LVABC deviation 1 DS I CA 01 Version 3 Mar 2013 Page 60 of 135

61 Core 25 mm 2 LVABC Span A: Over Road Span B: Over Untrafficked Land Facia attachment height (h ): 3 m and greater Service Pole attachment height (h): 6.5 m Note: 1. Max Span A length to allow separate construction or disconnection of Span B is 30 m 2. Max Span B length before exceeding 1 kn facia attachment limit is 33 m 3. Max Span B length before exceeding clearance over untrafficked areas is 33 m 4. For Angles of Deviation greater than 60 o, consult Aurora. 5. Flat ground has been assumed H (m) Ang of Dev Up to (Deg) Span A Up to (m) Span B Up to (m) H (m) Ang of Dev Up to (Deg) Span A Up to (m) Span B Up to (m) Table core 25 mm 2 LVABC deviation Point of attachment It is the responsibility of the electrical contractor to ensure the point of attachment is to Aurora standards i.e. 1. A hardwood fixing fascia support capable of withstanding a minimum1 kn load. 2. A 1 kn rated or greater raiser bracket if (required). DS I CA 01 Version 3 Mar 2013 Page 61 of 135

62 3. The angle between the service cable and the facia should not be less than 30 degrees for a service connected to the facia and 60 degrees for a service connected to a raiser bracket. (see drawing) 4. Specified clearances from ground, buildings, structures and vegetation are met. 5. The maximum span length of Aurora s overhead service cable is not exceeded. 6. The maximum span length of Aurora s overhead service cable is not exceeded. 7. Fixing of service hook or any raiser brackets is in accordance with drawings in this section and: a. Timber Facia: M10 coach screws or M10 bolts to timber behind facia b. Double Brick: M10 to M12 bolts into masonry anchors not less that 3 brick courses down c. Brick Veneer: M10 bolts that pass through brickwork to a suitable timber fixing to building framework. Note: Any point of attachment that Aurora considers may not meet this standard will require the electrical contractor to provide a certified engineering certificate detailing that the support is capable of supporting a 1 kn load If an Aurora service pole can be omitted by the installation of a raiser bracket at the point of attachment, then the customer is to supply and fit a raiser bracket. Service Hook 30 0 FACIA BOARD Raiser Bracket 60 0 Fig 4.12 Maximum angle of service attachment DS I CA 01 Version 3 Mar 2013 Page 62 of 135

63 Figure 4-12 Raiser bracket 1 DS I CA 01 Version 3 Mar 2013 Page 63 of 135

64 Figure 4-12 Raiser bracket 2 DS I CA 01 Version 3 Mar 2013 Page 64 of 135

65 4.9 Vegetation management Adequate clearance between vegetation and overhead powerlines is essential to minimise the risk of fire and to maintain a safe and continuous supply of electricity for customers. Aurora has a statutory obligation to ensure that vegetation and powerlines do not mix. To comply with this requirement, all service lines must be positioned so that they are clear of any vegetation. An allowance must be made for future growth of any vegetation near the service line New electricity overhead service wire Where a new electricity service wire is to be erected by Aurora to connect a customer to the electricity distribution system, the customer requesting the connection is to arrange and pay for the clearing of vegetation away from the proposed route. This includes the portion of the electricity service wire on council land in the road reserve as well as on private land on the customer s property Existing electricity overhead service wire The Standard Tariff Agreement between Aurora Energy and the Customer requires that the customer is responsible to maintain trees on their property well clear of electricity lines providing the customer s supply. Aurora currently arranges and pays for vegetation maintenance clearing (not initial clearing) of the portion of the electricity service wire on council land in the road reserve Vegetation clearing work to be by Aurora-accredited contractors Persons who perform work near live overhead lines must be accredited and authorised by Aurora. Charges apply if Aurora s service conductor is removed for vegetation clearing See - also Aurora brochure Safe Growing Near Powerlines DS I CA 01 Version 3 Mar 2013 Page 65 of 135

66 Trees or limbs that are considered unsound and liable to fall into the powerline are to be removed Minumum clearance allowing for 1 year's regrowth at 1 m per annum 2 m Low Voltage Insulated Service Wire 45 0 Figure 4-14 Vegetation clearance 4.10 Underground supply servicing arrangements Who makes the decision? Aurora will make the decision as to whether the Aurora service supply is to be an overhead service wire or underground service cable. Aurora considers many urban locations supplied by Aurora s overhead reticulation, as being likely to be converted to underground reticulation in the future. Such areas may be considered for servicing via an Aurora underground service cable to an Aurora turret, pit or cabinet Underground consumer s mains on a private service pole This applies to services that can be accommodated by a 100 Amp fuse fitting. (Note: Customer supplies greater than 100 Amp may require to be terminated in an Aurora turret, pit or cabinet) The customer s electrical contractor is to supply and erect a private service pole positioned just inside the customer s property line. The electrical contractor installs the customer s consumer mains to the pole up to the pole-top. Aurora connects an overhead supply and service fuse to the pole and connects the customer s consumer mains into Aurora s distribution system. DS I CA 01 Version 3 Mar 2013 Page 66 of 135

67 Aurora's LV Service Line Customer's Private Service Pole Aurora's Service Fuse Point of Supply Customer's Private Consumers Mains Customer's Property Boundary Fig Overhead to underground consumer mains Underground consumer mains supplied from an Aurora turret, pit or cabinet Existing Aurora underground assets Applies when connecting customer s consumer s mains in undergroundreticulated areas. In most cases Aurora will have installed a turret, pit or cabinet on public land to service 1 to 3 consumers in the vicinity. Aurora also installs a 50 mm conduit from the turret, pit or cabinet to property boundary to assist in the installation of consumer s mains. Aurora normally extends the conduit from Aurora s turret, pit or cabinet approximately 1.5 metres onto the customer s property. The customer assumes ownership of this conduit when consumers mains are installed. The customer is also responsible for the cost of installing and ownership of any additional conduits from Aurora s turret, pit or cabinet. Final installation and connection of consumer s mains into the turret is to be arranged with Aurora via the EWR process. Large consumer s mains or more that two sets of consumer s mains The size and number of consumer s mains cables can: 1. be difficult to terminate 2. restrict working on poles 3. restrict Aurora s attachments on poles 4. require multiple points of supply These types of consumer s mains generally required to be supplied from an Aurora turret pit or cabinet. Aurora may also require supply via an Aurora turret, pit or cabinet for system development reasons. DS I CA 01 Version 3 Mar 2013 Page 67 of 135

68 Stratum-Titled Developments Aurora s point of supply for stratum-titled developments will generally be a turret, pit or cabinet. Aurora's Pole Aurora's Turret, Pit or Cabinet Aurora's Service Fuse Point of Supply Aurora's Underground LV Service Cable Customer's Property Boundary Customer's Private Consumers Mains Fig Stratum titled development connection arrangement Underground consumers mains installed on an Aurora pole Customers can arrange the connection of their underground consumer s mains to an Aurora pole in the street provided local Council approval is obtained and the attachment meets the requirements of Consumer mains attachment to Aurora poles. The electrical contractor installs the customer s consumer s mains on the Aurora s pole to a point 3 m above ground level in accordance with Consumer mains attachment to Aurora poles Aurora attaches the customer s consumer s mains to the remainder of the pole and terminates into Aurora s service fuse. The customer owns the consumer s mains and conduit. Aurora owns the fuse fitting on the pole. Aurora's Service Fuse Point of Supply Customer's Private Consumers Mains Customer's Property Boundary Fig 4-17 Overhead to underground consumer mains 2 DS I CA 01 Version 3 Mar 2013 Page 68 of 135

69 Large customer loads Large customer loads may require the location of the point of supply inside the property boundary and may require a ground-mounted substation or future provision for a ground-mounted substation. Aurora s Customer Supply Department will advise customers of the necessary application procedures. (See - Contacts details) 4.11 Consumer mains cable attachment to Aurora poles Safety Note: Electrical contractors need to be aware of the safety aspects of excavating and operating equipment in the vicinity of Aurora assets. (See - Safety requirements) Approval of attachment: Approval of the attachment of consumer s mains to Aurora assets can be presumed provided: 1. The indemnity form Indemnity for installation of consumer s mains on Aurora poles is fully completed and signed by all parties 2. The attachments is not a prohibited attachment as detailed below 3. The consumer s mains are installed to Aurora standards as specified in these Service ad Installation rules Notes: Consumer mains and their attachment, that do not meet the requirements of these Service and Installation Rules will not be connected. Underground consumer mains over 100 Amps per phase are considered complex connection. (See - Complex connection) Indemnity form The form Indemnity for installation of consumer s mains on Aurora pole is to be forwarded to Aurora together with the EWR Prohibited cable attachments to Aurora poles 1. No consumer mains on SWER (single-wire earth-return) transformer poles. (Damage to SWER transformer earthing and/or contact between the low voltage and high voltage earthing systems on SWER transformers can be hazardous). 2. No consumer mains cables on HV switch poles. 3. No consumer mains cables on HV link poles. 4. No consumer mains cables on HV fuse poles (except non SWER transformer poles). DS I CA 01 Version 3 Mar 2013 Page 69 of 135

70 5. No consumer mains cables on concrete poles or poles comprising of steel and concrete (ie Stobie poles and spun concrete poles). 6. No consumer mains cables on steel poles carrying HV assets. 7. No metallic objects that connect with the ground, a building or a remote location are not to be installed on steel, concrete or steel/concrete HV poles. 8. No metal conduit connections from the pole to the customer installation. 9. No metal cable trays. 10. No customer s metered wiring. 11. No consumer mains cable inside Aurora steel poles Acceptable cable attachments to Aurora poles Maximum allowable number of conductors (existing + proposed) 1. Aurora pole on Public Land: a. One set of 150 mm 2 or 240 mm 2, 1 phase or 3 phase or b. Two sets of up to and including 120 mm 2, 1 phase or 3 phase c. One cable per phase 2. Aurora pole on Private Land: a. One set of up to and including 240 mm 2 in parallel, 1 phase or 3 phase Note: Cables equal to or smaller than 50 mm 2 enclosed in flexible hose-type conduit Claims (except xlpe) need to be Aurora shall not be liable for any claims arising from the installation or continued presence of any private attachment to an Aurora Network pole. DS I CA 01 Version 3 Mar 2013 Page 70 of 135

71 Installing underground consumer s mains to an aurora pole Services and Installation Rules Figure 4-18 Underground mains up Aurora pole 1 DS I CA 01 Version 3 Mar 2013 Page 71 of 135

72 Figure 4-19 Underground mains up Aurora pole 2 DS I CA 01 Version 3 Mar 2013 Page 72 of 135

73 4.12 Installing underground consumer s mains to a private pole The pole and consumers mains are private assets and part of the customer s installation. Aurora terminates its service wire at the top of the private pole (Point of supply). The electrical contractor is responsible for the installation of the consumer s mains to the top of the private service pole Temporary underground supply to temporary or permanent position It is common for installations intending to be supplied via underground consumers mains to have the consumers mains installed and run to a position very close to the final meter/switchboard position. The meter/switchboard is positioned on a temporary stable and secure structure enabling constructionsite electricity supply. The meter/switchboard is fitted to the building when the building is constructed. PERMANENT UNDERGROUND SUPPLY TO A TEMPORARY POSITION Top of Meter Max 1.8 m Meter Fix enclosure to building's studs or brickwork OR Approved purpose-built proprietary switchboard enclosure support post OR Two 50 mm (minium) angle iron or RHS supports OR Two 120 mm x 50 mm (minium) "C" section posts OR One 75 mm x 75 mm RHS support fitted to centre-back of enclosure Bottom of Meter Min 1.2 m Meter Panel and Switchboard Enclosure Customer mains mechanical protected ALTERNATIVE FOOTING ARRANGEMENTS Steel support post(s) (See above) Customer mains mechanical protected inside pipe Purpose-built commercially-available switchboard enclosure support system installed to manufacture's instructions Bolted to building concrete footing Steel or Heavy Duty Plastic Pipe Concrete or rammed rock footing 50 mm (3.2 mm) dia galv water pipe or similar Crushed Rock or Metal Wedges inside pipe or neat fit Notes: Temporary or Permanent Installation must have mechanical protection and comply with AS/NZS 3000 Wiring Rules Enclosure must be held securely with no twisting Additional charges apply for a revisit when moving requires reconnection The permanent meter panel is to be used. See metering section for other requirements No bracing permitted. (Only until concrete sets) Access to Aurora turrets by Aurora authorised personnel only Figure 4-20 Temporary in permanent position DS I CA 01 Version 3 Mar 2013 Page 73 of 135

74 4.14 Access to aurora s turrets and cabinets Cabinets - lockable They are secured by a keyed lock and can only be accessed by Aurora personnel Underground service box (wall-mounted) Usually installed on the consumer s building. Secured either by sealing, bolt or keyed lock and can only by accessed by Aurora personnel Turrets Requires the use of a dedicated tool to access Can only be accessed by: 1. Aurora personnel 2. Persons authorised by Aurora Energy DS I CA 01 Version 3 Mar 2013 Page 74 of 135

75 5. METERING 5.1 General The customer shall provide and maintain adequate mounting and installation facilities for Aurora Energy s metering equipment in the location/s approved or selected by Aurora Energy s responsible officer. The metering equipment including panels shall, unless otherwise agreed in writing, remain the property of the Aurora Energy. The customer shall ensure that access is not subsequently restricted or the location otherwise rendered unsuitable. Should this occur the, customer shall restore suitable access or arrange for the relocation of the metering equipment at the customer s expense. Customers are responsible for ensuring that Aurora Energy metering equipment, installed on their property, is not damaged or interfered with. 5.2 Location and accessibility of metering equipment The metering position is the location provided for the installation of metering equipment. Meters shall be located in a position readily accessible for fixing, reading, testing, adjustment and removal, without difficulty or hazard. This position is normally on the exterior of the building and access can be gained without having to obtain a key. The area in which the metering is installed shall be adequately illuminated and kept clear, clean and free of rubbish and equipment. Access to meter locations via platforms, walkways, stairways or ladders shall comply with Australian Standard (AS 1657). If there is any dispute about the suitability of the structure, a certificate of compliance will be required from a building surveyor. If alternative metering positions are used, electrical connection will not be made to the customers installation unless Aurora Energy grants prior approval Number of metering positions per property Unless prior approval in writing is granted by Aurora Energy, only one metering position shall be approved per property Separation from gas Installations The Dangerous Goods Regulations 1998 refers to AS/NZS 1596 Storage and Handling of LP Gas and AS 5601 Gas Installations. Generally: 1. 25mm distance must be maintained between any above ground gas line carrying LP gas and any metallic conduit, metallic armouring of a cable or earthing electrode, 2. Separation between underground gas and electrical services shall be at least 100mm provided suitable brick or concrete slab and continuous orange marker tape mechanically protected the electrical conduit or DS I CA 01 Version 3 Mar 2013 Page 75 of 135

76 cable. The separation distance shall be at least 300mm if the cable or conduit is not mechanically protected as above. 3. For electrical installations where the system voltage does not exceed 1000 volts, the separation distance of at least 500mm must be maintained between an earth electrode and underground gas pipes. Any gas meter, fittings, fixtures, enclosures or other obstructions installed below the metering panels shall not project more than 300mm from the wall face on which the metering panel is mounted. The gas regulator shall not be less than 500mm radially from any electrical metering equipment. Refer AS 2430 Classification of Hazardous Areas Separation from distribution infrastructure Metering equipment shall not be mounted on Aurora infrastructure unless approved by Aurora Energy. Reference should be made to the Earthing section of this manual in relationship to earthing clearances Existing metering installation alterations and additions Generally, where metering installations are changed or relocated, standard metering arrangements as required by this section shall apply. Note: The reuse of an existing meter board or panel is subject to the following conditions: 1. Timber and panels that contain asbestos (Zelemite, Tasbestos etc) are not to be reused 2. The customer shall be responsible for the replacement and installation of any additional fuses and links as required. Warning: Allowance must be made for the panel opening requirements with all metering equipment installed. (See Installation of metering equipment) General Requirements Unobstructed access must be provided to Aurora Energy metering equipment. Meters must be able to be read, tested or removed without Aurora Energy Officers entering the customers' premises or enclosed areas. Generally, the metering position shall be on the front or side wall, within 1.2 metres of the front wall of the premises, facing the nearest access road. Proposed walls, fences, gates, landscaping and future building additions may affect access after metering equipment has been installed. Should this occur, the customer will be responsible for providing approved access. This may require moving the metering equipment to a more suitable location. All weather pedestrian access shall be provided to every metering position. All metering positions where possible shall not be more than 20 metres from an all-weather vehicle access. Note: All weather vehicle access is deemed to be via a formed road with a maximum gradient of 20% and capable of handling a 1 in 5 year rain event. DS I CA 01 Version 3 Mar 2013 Page 76 of 135

77 A multiple customer metering position shall be located in an area designated as "common property". "Common property" is an area accessible by all of the customers involved without the need for any customer to cross private property. An example of common property is the common metering position within a walkway or switchboard room of a shopping arcade. There are no limits to the width of a metering enclosure, but there are following height restrictions: 1. Metering enclosures shall be installed within normal height limits of 1200mm (taken from bottom edge of the meter panel) and 1800mm (to the top edge of the meter panel). An exception to this is in part (2) as follows. 2. If the width of a metering position cannot accommodate all the metering requirements, then approval may be given for a metering enclosure to be installed outside the approved. If meter space is still an issue, other technology arrangements may be able to be negotiated with Aurora at cost to the customer. If the metering enclosure is accessible to the public then an Aurora Energy meter lock shall be installed. Note: Measurements for conditions a) and b) above shall be taken from the nearest normal standing position within 600mm from the front of the meter enclosure door in the closed position. All metering position must have 600mm unrestricted access in front of them, which include opening the door to 120º In the event of a major change to a customer s installation, for example new mains, switchboard or additional tariffs (including imbedded generation i.e. solar) the metering must be installed in an approved position. With effective planning, valuable space may be saved at commercial installations by: 1. Having the metering position backing onto the front/side wall of the main switchboard room. Where the switchboard remains in its original position and the meters are relocated to a new position, it will be necessary to re-route the customers' mains to the new metering position and supply metering loops from the customers' switchboard to the new metering position. The metering equipment shall be relocated free of charge, but the customer shall be responsible for the remaining costs Single installation metering positions In single installations, the metering equipment shall normally be fixed in a position which is readily accessible without having to enter rooms, enclosed verandas or yards which may be locked. The following diagrams indicate the recommended metering positions for single residential installations. Providing the metering position complies with DS I CA 01 Version 3 Mar 2013 Page 77 of 135

78 one of the following locations and is not impeded by proposed fences, gates, walls or bushes, specific approval is not required. Garage Garage Structure Structure Structure 1.2 Carport Legend Front Door 1.2 Meter Location Property Line Structure Structure Fence 1.2 Driveway Carport Street Figure 5-1 Location of meter equipment at a residence Notes: It is permissible to locate Aurora Energy s metering equipment in a carport provided that the carport will not be enclosed now or in the future and access to the main entry is through that carport. Aurora Energy s metering equipment is not to be located behind a fence or where it is likely to be fenced in from normal access via the street. DS I CA 01 Version 3 Mar 2013 Page 78 of 135

79 5.2.7 Multi-Tenanted premises These include commercial, industrial and multi-customer premises. Approval is required for these metering positions before the metering enclosure and associated wiring is installed. Approval is also required for a meter enclosure that forms part of the building structure. The following information shall be submitted to the local Service Connection Centre for approval of each metering position: 1. Maximum demand for each customer, together with the overall demand of the development shall be assessed in accordance with AS/NZS The tariff and number of phases required by each customer. 3. Panel sizes - Consideration for future requirements or expansion is the responsibility of the customer and electrical contractor 4. Building & landscape access - Layouts of buildings or landscaping that may affect present or future access to metering positions. 5. Mains and protection equipment - Details of consumer s mains and line side protection equipment. 6. Other information - Relevant to assess appropriate metering position, site inductions etc Total maximum demand of 100 Amps or greater Where any of the following conditions apply or there is any doubt at all, detailed plans shall be submitted to your local Service Connection Centre at an early stage for approval, to allow time to coordinate the installation of supply and metering equipment. 1. Where high voltage may be used. 2. Pole or ground-mounted transformers may be required. 3. A substation may be required. 4. The installations to be metered may require the existing supply to be extended, or installation of a new supply. 5. The installation to be metered requires transformer-connected metering (CT s). 6. The existing installation to be metered is complex, involving high voltage transformers, switchgear, large cables or busbars. 7. Where there is a likelihood of more than one metering position required, eg. at a proposed retirement village to be constructed. 8. "Stratum title" installations are involved Stratum title developments Approval will be given for multi metering position for stratum title development upon application with a copy of planning documentation from the local council. DS I CA 01 Version 3 Mar 2013 Page 79 of 135

80 Example of metering positions which may be approved Isolated Buildings & Irrigation Pumps: Services and Installation Rules If all weather and all season access is not possible to isolated buildings and irrigation pumps installations in accordance with the requirements for metering positions, then the customer shall: 1. provide a metering enclosure and main switch on a private pole where all - weather / all season access is possible. Note: All poles and overhead conductors from this point are part of the customer s electrical installation. See examples 1 to 3 below. Alternatively, pay the cost of providing metering with remote reading capability, of a type compatible with Aurora Energy s preferred systems. PUBLIC ROAD Legend Aurora Pole Private Pole Transformer Meter position A Aurora service span to first pole C B Figure 5-2 Remote installation metering example 1 PUBLIC ROAD Legend Aurora Pole Private Pole Transformer Meter position (Including main switchboard) X Metered Submains Z Y Figure 5-3 Remote installation metering example 2 DS I CA 01 Version 3 Mar 2013 Page 80 of 135

81 PUBLIC ROAD Legend Aurora Pole Private Pole Meter position (Including main switchboard) Pump Building Figure 5-4 Remote installation metering example Provision and security of metering equipment The following information details metering and associated line side equipment provided by the customer and Aurora with regard to control, ownership, maintenance and cost. The metering enclosure shall be constructed in a manner to prevent the spread of fire in accordance with AS/NZS3000 for the construction of switchboard enclosures and surrounds. Metering enclosures shall have appropriate degree of protection in regard to climatic conditions and constructed from appropriate materials to prevent corrosion. In addition, rules are provided for protection of metering equipment against the possibility of interference. Metering equipment supplied shall be of the type specified by Aurora Provision of equipment for direct-connect-metering Meter panels supplied with fixed metering equipment shall be provided by the electrical contractor at the customer's expense. Only Aurora Energy approved and accredit meter panel manufacturers may supply a meter panel. An accreditation number must be attached to the panel to its use. Details on the requirements for meter panels are provided in this document. DS I CA 01 Version 3 Mar 2013 Page 81 of 135

82 Except for the following items, all equipment installed on meter panels, shall be supplied by an authorised panel manufacturer, in accordance with specifications provided. Aurora Energy shall provide the following equipment: 1. Standard meters to cater only for billing of customers. 2. If a pulse output is required from a meter, then a capital contribution may be required from the customer. 3. Time switches to control rate and off peak tariffs. (Contactors not supplied.) 5.4 Installation requirements for metering equipment Ownership and Control Metering and line side protection and control equipment connected prior to the customer s switchboard mains switch comes under the control of Aurora Energy irrespective of purchase or ownership conditions. As such, this equipment cannot be removed, tampered with or altered in any way without prior authorisation from Aurora Energy. Electrical contractors may be authorised and accredited to perform metering work for Aurora. Accreditation will be at the discretion of Aurora Energy Maintenance Aurora shall maintain metering equipment provided by Aurora Energy. Only authorised electrical contractors or Aurora Energy metering staff shall repair metering equipment (fuses, contactors, links etc) provided by the customer and used for Aurora Energy to record energy Location of customer s equipment The customer's switchboard equipment shall be installed on a physically separate panel to the meter panel. Wiring that is not intended for the connection to the metering panel/s, shall not be located in the wiring space directly behind the meter panel/s, unless contained within a physically separate duct or conduit located in a rear corner of the enclosure such that it does not obstruct the meter wiring space Security of equipment Metering equipment shall have provision, for application of Aurora's security seals. Sealing holes shall have a minimum diameter of 2 mm for the sealing ties to pass through. Wherever possible, equipment shall be back entry connected so that conductors are not exposed. Access shall not be available to un-metered mains, and the following measures shall be implemented where necessary: 1. The use of a sealable escutcheon panel to cover front connected wiring. DS I CA 01 Version 3 Mar 2013 Page 82 of 135

83 2. Free-standing support frames shall have the sides and top covered with sealable panels. 3. Bare conductors and bus bars shall be enclosed with provision made for security sealing. Typical security methods Incoming un-metered cables within easy access must be enclosed in conduit or covered by panels. However, Aurora may deem one of the following measures as being adequate to prevent interference. 1. The mains cables are of a type to make interference unlikely. 2. Adequate security is provided due to conductors being installed out of reach. 3. Protection is provided because the installation is under the floor. 4. Conductors are installed above the ceiling. 5. Conductors are within wall cavities. Contactors used for off peak tariffs, shall be housed in a suitable enclosure to prevent unauthorised access to terminals and, be provided with sealing holes. It may be necessary to drill holes in the enclosure to help conduct away heat build up. No hole should be drilled directly in front of contactor. 5.5 Un-metered equipment For the prevention of unauthorised access to the terminals of all un-metered equipment, and to ensure that illegal diversion or interference to the electrical supply does not occur, the customer shall make provision to fix seals. 5.6 Installation of metering equipment Metering enclosures and locks This section provides requirements, guidelines and details for the use of metering enclosures, access to metering equipment and the use of locks Approval Metering enclosures shall comply with the minimum requirements in this section for construction, size and protection against physical and environmental conditions. Metering equipment shall not be installed if any requirements for metering enclosures are not met Note: With regard to installations where smaller metering enclosures were installed and there is now a need to provide extra space to install metering equipment e.g., for an additional tariff, then the following options are allowed: 1. Enlarge or replace the existing metering enclosure (preferred practice), particularly for a major change to the customers electrical installation. DS I CA 01 Version 3 Mar 2013 Page 83 of 135

84 2. Add on an adjacent metering enclosure. In this case the electrical contractor shall provide wiring access (25mm min. dia. hole) between the adjacent metering enclosures. Unless approval is given otherwise, metering equipment shall be installed within a metering enclosure for mechanical protection and protection against the environment. There are no restrictions on the width of a metering enclosure. Metering enclosures shall cater for the following dimensional requirements: 1. Metering enclosures installed at new domestic installations must cater for a standard 350mm wide panel. 2. The meter cleats must be arranged such that: a. A standard size 350mm wide panel can be installed and; b. The meter cleats, especially if metallic, shall be installed in accordance with AS/NZS A minimum clearance of at least 600mm must be maintained in front of metering enclosures. In addition, the door must at least be capable of being opened to 120. Metering enclosures shall comply with the following construction requirements. 1. Door openings shall allow meter panels to pass through as shown on the following drawing. CLEATS DOOR CLEARANCE METER PANEL Figure 5-5 Door / Panel clearance 2. Doors shall: a. Be hinged from the side (left or right) b. Open to a minimum of 120. c. Include a stay to hold them open d. Incorporate stiffening ribs, where necessary, to prevent the door collapsing or warping in the open position. e. Provide hinges that maintain a long service life. Hinges may allow for door removal. DS I CA 01 Version 3 Mar 2013 Page 84 of 135

85 A 120 opening is minimum. Figure 5-6 Cabinet 3. Metal metering enclosures shall: a. Be constructed of material not less than 0.75mm (22 gauge) thick. b. Where applicable, be galvanised for protection against corrosion. c. Have all edges free of sharp burrs, including, door edges. d. Be provided with a drain hole. e. Have an earth stud in an accessible location. f. Have earthing comply with the Wiring Rules. Consideration should be made for metering enclosures to be made of stainless steel or plastic in seaside locations (e.g. Bicheno, Sulphur Creek) Fire-proofing meter enclosures In existing wooden meter enclosures, the area containing wires must be fireresistant in accordance with the following diagram: FIRE RESISTANT LINING WALL LINING TIMBER CLEAT METER PANEL Figure 5-7 Fire-resistant lining DS I CA 01 Version 3 Mar 2013 Page 85 of 135

86 5.7 Metering enclosure Sizes For all metering enclosures a minimum depth of 175mm shall be provided from the front of the meter panel to the inside back of the metering enclosure door. This distance excludes any door stiffening. The depth behind and thickness of meter panels shall comply with the Australian Standards Metering enclosures standard sizes The following options detail Aurora Energy s minimum requirements for singlephase installations. Customer switchboard and equipment requirements may necessitate larger enclosures than those described below. Contractors and customers should consider future needs and tariffs when planning their electrical installation: Minimum option/remote switchboard Metering enclosures which are remote to customer switchboards must accommodate one panel with dimensions of 300mm (height) x 350mm (width). This allows for two single-phase meters on one panel Minimum option/incorporated switchboard Metering enclosures which are to incorporate customer switchboards must accommodate one panel with dimensions of 300mm (height) x 350mm (width). This allows for two single-phase meters on one panel. Additional space needs to be provided to incorporate the customer s switchboard Minimum option/incorporated switchboard/three tariffs Metering enclosures for three tariffs and incorporating customer switchboards must accommodate two panels with dimensions of 300mm (height) x 350mm (width), or one panel of 600 mm (height) x 350 mm (width) Metering enclosures non-standard sizes These enclosures accommodate larger metering installations. Minimum size shall depend on panel size provided Meter cleats Meter cleats shall be minimum 50 mm in width, and a depth of 50mm or the minimum bending radius of the cable in accordance with AS/NZS 3000, whichever is the greater Installation requirements Electrical contractors are to ensure that the following metering installation requirements are met: DS I CA 01 Version 3 Mar 2013 Page 86 of 135

87 1. Install sufficient length of consumer s mains and load conductors to bring out the meter panel 450mm with the mains / load-ends connected to the meter panel. 2. If the mains are not colour-coded, use heat shrink sleeving to identify the consumer mains active as red, white or blue and the neutral as black. 3. Connect the consumer mains active conductor to the connection point on the meter panel that is: a. the disconnection switch for single-phase supply and b. disconnection fuses for polyphase supply. 4. Ensure that the maximum conductor size terminated on removable meter panels 35mm. All larger conductors shall be terminated in sealable links behind the meter panel. 5. Connect the consumer mains neutral conductor straight to the main switchboard neutral link. The metering neutral is either: a. soldered to the main neutral (preferred option) or b. crimped-in with the main neutral lug or c. crimped via a sealable stud/bolt. Note: The take off connection point for the metering neutral is not taken from the switchboard neutral link/bar, but instead is taken from the main neutral behind the meter panel or main switch board panel and is sealed and out of sight to avoid any chance of illegal interference occurring. 6. The main earth conductor connection (including MEN connection) at the main switchboard shall not be located behind any panel or door etc. where access requires the removal of Aurora security seals. 7. Install the tariff load conductor ends through the appropriate terminal holes in the meter panel. Each conductor shall: a. be marked to identify the tariff to be connected to and b. have sufficient length provided for Aurora staff to connect to meter terminals. 8. Check for correct wiring and consumers mains polarity and then fix the meter panels securely in place with supply left un-connected ready for Aurora Energy staff to finalise metering connections, inspect and connect the supply. Consumers mains must be enclosed in conduit where passing behind switchboards to the metering position. This particularly applies where underground supply is being provided. Entry holes on the top or sidewall of the meter enclosure exposed to the weather shall be sealed to an IP 23 rating in accordance with AS/NZS 3000 to prevent entry of water. The customer's switchboard shall be physically separate from Aurora Energy's meter panels. DS I CA 01 Version 3 Mar 2013 Page 87 of 135

88 If a hinged meter panel is used, the meter enclosure must allow the panel to fully open without restriction to allow Aurora Energy metering staff to gain access behind to carry out metering work in a safe manner. Hard drawn conductors should not be used for consumer mains or metering terminal ends. If hard drawn conductors are used, they shall be terminated in sealed links located behind the metering panel and connected to stranded conductors that can then be connected to the meter terminals Metering equipment locks and access Private locks or keys are not accepted on metering enclosures. Metering enclosures should not be locked, however if security is required, telephone for the name of an approved locksmith in your area to purchase the required master keyed lock. Aurora Energy has a master key to open all standard locks. Each lock is sold with two individual customer keys and the customer shall fit the standard lock. Types of Master Keyed Locks available for sale are: "T" Handle Lock Usage is intended for residential meter boxes but the extended locking shaft allows for the lock to fit most doors. Fitting will require a 12mm dia. hole for the locking shaft and two holes drilled with centres 38 mm apart for fixing the locking assembly. Figure 5-8 T handle lock Night Latch and Replacement Cylinder Usage - Intended for switchboard room and metering enclosure doors. They are provided with a dead-locking latch. The lock cylinder can be purchased separately. Figure 5-9 Night latch DS I CA 01 Version 3 Mar 2013 Page 88 of 135

89 Padlock Usage -Intended for access gates, large metering enclosures and bolt action locks. Inside diameter of the shackle is 19mm. Figure 5-10 Padlock Unacceptable access conditions Aurora Energy will not permit standard metering to be installed or remain where the conditions listed below apply. If metering equipment is enclosed without authorisation, then the customer shall remove the enclosure or lock or pay the full cost to have the metering equipment relocated to a more accessible position. If the customer, without consulting with Aurora Energy, causes the restricted meter access conditions below, installation of remote meter reading products will be incurred at the customer s expense. 1. Metering equipment enclosed by building alterations or additions, (i.e. sunrooms and verandas being enclosed by fly screens and security doors or a garage being added to the side of a house). 2. Brick walls and fences etc. restricting access to the metering equipment. 3. Customer s private locks on metering enclosures, gates or doors giving direct access to the metering position. Existing arrangements where Aurora Energy has previously accepted a key shall remain until the lock is changed. Then, only an Aurora Energy standard master keyed lock shall be used if security is required Easy Read (ERT) meters Easy read allows Aurora Energy meter readings up to 50m (under favourable conditions - guide only) away via a small electronic radio receiver/transmitter (ERT) fitted to a meter. Whilst ERT s are still operated and maintained within Aurora s network ERT s are no longer available for new or existing installations. Information regarding ERT meters should be directed to the Aurora Energy on DS I CA 01 Version 3 Mar 2013 Page 89 of 135

90 5.8 Metering panel size It is important to ensure that the metering panel area is adequate, so as to cater for both immediate and future metering requirements. If due to size or shape considerations, more than one meter panel is required, they shall be mounted adjacent to each other. Non-standard meter panels (known as special panels) shall be approved as part of the procedure for determining metering positions, detailed in this document. The identification of switches/fuses and tariff meters on the meter board must be such that they are installed such that: 1. The tariff meters are installed in tariff number order with the lowest tariff number meter on the left and the remaining tariff meters installed in ascending tariff number to the right. Where an existing meter panel is altered to include an additional tariff meter, the existing tariff meters shall be rewired if necessary to provide for this requirement. 1. Each switch/fuse and each meter are clearly identified either by fixed labelling or appropriate long lasting pen marker. Aurora Energy may require a larger panel to be installed or an additional panel to be installed to provide the extra area required. Where a meter enclosure is involved, a larger meter enclosure, or an additional enclosure installed adjacent to the existing one, may be required to provide for extra space. For hinged meter panels or removable fixed meter panels, where the panel area is less than 0.2 square metres, the minimum clearance behind each panel to the inside back wall of the metering enclosure shall be 50mm for conductor sizes up to 16mm². For larger conductor sizes the minimum clearance shall be in accordance with AS/NZS Meter panels forwarded by electrical contractors to panel manufacturers for drilling and wiring shall: 1. Comply with Wiring Rules for minimum thickness. 2. Be marked with information shown on the panel layouts in this section together with details of the installation address, proposed mains sizes, phases and loading per tariff, and if possible, whether overhead or underground supply will be provided. 3. Be of Type X or Type Z material, comply with AS and not contain asbestos. 4. Be vetted by local Aurora Energy metering staff where required, to ensure requirements are met before the panel(s) can be cut, drilled and wired. DS I CA 01 Version 3 Mar 2013 Page 90 of 135

91 For fixed meter panels that cannot be removed easily, minimum clearance behind the panel shall be in accordance with AS/NZS Only meter panels from accredited manufacturers, with an approved accreditation number fixed, shall be installed. Note: Electrical Contractors shall not produce their own meter panels for installation. Meter panels come under the control of Aurora Energy, regardless of purchase. Meter panels cannot be removed from service without prior authorisation from Aurora Energy. On all new installations, and where possible on existing installations, electrical contractors shall install meter panels and, connect the consumers mains and load conductor wiring to meter panels, as shown on the wiring diagrams at the end of this section. Note: The smallest conductor Aurora Energy accepts for metering purposes is 4 mm². 5.9 LV installation up to 100 Amp/phase Low voltage installations up to 100 Amp/phase or direct-connected metering are covered in the following sections: Standard size meter panel There are standard size meter panels available to cater for most metering requirements. Wiring diagrams of each of these panels are included in the document. Each panel is divided into metering spaces. Unless shown otherwise, each meter space is 300 mm high by 175 mm wide, which caters for a standard single or poly-phase meter. Select the panel(s) required for each metering position by taking into account the following: 1. Number of tariffs per customer 2. Commercial or residential tariffs involved 3. The amount of space required for: a. metering control equipment b. line-side control and protection equipment, protection and /or control equipment required for sub mains going to another metering position. (refer to Wiring Rules) If any tariff requires a two-phase supply, space shall be provided for two single-phase meters. DS I CA 01 Version 3 Mar 2013 Page 91 of 135

92 A hinged panel may be used instead of a combination of fixed panels provide that: 1. Sufficient lengths of conductors are provided to allow the panel to be opened to at least 120 degrees. 2. If installed within a metering enclosure, the panel(s) shall be hinged at a minimum of 170 mm away from the sidewall so that the tariff meters will not jam against the side wall when the panel is swung open Determining panel size and layout Standard panels should be used. For non-standard sizes, consult meter panel manufacture. Tariff spaces marked AURORA ENERGY are required for installation of allied metering control/projection equipment such as fuses, switches, links, contactors or time switches. DS I CA 01 Version 3 Mar 2013 Page 92 of 135

93 5.9.3 Metering wiring diagrams The drawings contained in this section detail all the metering wiring diagrams 'LINE' A N SERVICE FUSE AT POINT OF SUPPLY 350 mm NEUTRAL SINGLE PHASE METER SINGLE PHASE METER 300 mm DISCONNECT SWITCH FRONT A A N 'LOAD' NOTES: mm Insulating panel to AS Back entry single pole, 80 Amp disconnection switch with double terminals top and bottom to AS Switch arm to be sealable in 'ON' or 'OFF' position 3. Back entry 90 Amp neutral link with sealing cover to take up to 25mm 2 cable 4. 4mm 2 Black (Blk) neutral wiring 5. 16mm 2 active wiring 6. All equipment to be sealable. Sealing covers to have 2mm dia. sealing holes. TYPICAL WIRING DIAGRAM - EXISTING INSTALLATION ONE CUSTOMER, 2 SINGLE PHASE METERS PANEL SIZE 350 mm W x 300 mm H Fig 5-11 Wiring Diagram 1 Customer 2 tariff (existing) DS I CA 01 Version 3 Mar 2013 Page 93 of 135

94 'LINE' A N SERVICE FUSE AT POINT OF SUPPLY 350 mm NEUTRAL SINGLE PHASE METER SINGLE PHASE METER 300 mm DISCONNECT SWITCH FRONT A A N 'LOAD' NOTES: mm Insulating panel to AS Back entry single pole, 80 Amp disconnection switch with double terminals top and bottom to AS Switch arm to be sealable in 'ON' or 'OFF' position Amp neutral link with sealing cover to take up to 4mm 2 cable 4. Metering Neutral to be 'sweated, to unbroken main neutral behind meter panel. Insulation must be maintained 5. 4mm 2 Black (Blk) neutral wiring 6. 16mm 2 active wiring 7. All equipment to be sealable. Sealing covers to have 2mm dia. sealing holes. TYPICAL WIRING DIAGRAM - NEW INSTALLATION ONE CUSTOMER, 2 SINGLE PHASE METERS PANEL SIZE 350 mm W x 300 mm H Fig 5-12 Wiring Diagram 1 Customer 2 tariffs (new) DS I CA 01 Version 3 Mar 2013 Page 94 of 135

95 'LINE' A N SERVICE FUSE AT POINT OF SUPPLY 350 mm NEUTRAL SINGLE PHASE METER SINGLE PHASE METER 600 mm DISCONNECT SWITCH FUSE TIME SWITCH SINGLE PHASE METER FRONT N A A A NOTES: mm Insulating panel to AS Back entry single pole, 80 Amp disconnection switch with double terminals top and bottom to AS Switch arm to be sealable in 'ON' or 'OFF' position 3. Back entry 90 Amp neutral link with sealing cover to take up to 25mm 2 cable 4. 4mm 2 Black (Blk) neutral wiring 5. 16mm 2.active wiring 6. All equipment to be sealable. Sealing covers to have 2mm dia. sealing holes. 7. Terminal arrangement of time switch may vary according to brand TYPICAL WIRING DIAGRAM - EXISTING INSTALLATION ONE CUSTOMER, 3 SINGLE PHASE METERS PANEL SIZE 350 mm W x 600 mm H 'LOAD' Fig 5-13 Wiring Diagram 1 customer 3 tariffs (existing) DS I CA 01 Version 3 Mar 2013 Page 95 of 135

96 'LINE' AN SERVICE FUSE AT POINT OF SUPPLY 350 mm NEUTRAL SINGLE PHASE METER TWO ELEMENT METER 1 CONTROLLED & 1 UNCONTROLLED 300 mm DISCONNECT SWITCH FRONT UNCONTROLLED CONTROLLED N A A A 'LOAD' NOTES: mm Insulating panel to AS Back entry single pole, 80 Amp disconnection switch with double terminals top and bottom to AS Switch arm to be sealable in 'ON' or 'OFF' position 3. Neutral link with sealing cover to take up to 4mm 2 cable 4. Metering Neutral to be 'sweated, to unbroken main neutral behind meter panel. Insulation must be maintained 5. 4mm 2 Black (Blk) neutral wiring 6. 16mm 2 active wiring 7. All equipment to be sealable. Sealing covers to have 2mm dia. sealing holes. 8. Terminal arrangement for electronic meters may vary according to brand TYPICAL WIRING DIAGRAM - NEW INSTALLATION ONE CUSTOMER, 1 SINGLE PHASE METER, 1 TWO RATE PANEL SIZE 350 mm W x 300 mm H Fig 5-14 Wiring Diagram 1 customer 3 tariffs (new) DS I CA 01 Version 3 Mar 2013 Page 96 of 135

97 N 'LINE' R W B SERVICE FUSES AT POINT OF SUPPLY 350 mm ISOLATION FUSES POLYPHASE METER 300 mm NEUTRAL FRONT N R W 'LOAD' B NOTES: mm Insulating panel to AS Back Entry 100 Amp Fuses with double terminals top and bottom to AS Back Entry 90 Amp neutral link with sealing cover to take up to 25mm 2 cable 4. 4mm 2 Black (Blk) neutral wiring 5. 16mm 2 Red (R), White (W), Blue (B) active wiring 6. All equipment to be sealable. Sealing covers to have 2mm dia. sealing holes. 7. Phase sequence must be red - white - blue when looking at the front of the meter. (Includes electronic) TYPICAL WIRING DIAGRAM - EXISTING INSTALLATION ONE CUSTOMER, COMMERCIAL POLYPHASE PANEL SIZE 350 mm W x 300 mm H Fig 5-15 Wiring diagram 1 customer polyphase (existing) DS I CA 01 Version 3 Mar 2013 Page 97 of 135

98 N 'LINE' R W B SERVICE FUSES AT POINT OF SUPPLY 350 mm ISOLATION FUSES POLYPHASE METER 300 mm NEUTRAL FRONT N R W 'LOAD' B NOTES: mm Insulating panel to AS Back Entry 100 Amp Fuses with double terminals top and bottom to AS Neutral link with sealing cover to take up to 4mm 2 cable 4. Metering neutral to be 'sweated' to unbroken main neutral behind meter panel 5. 4mm 2 Black (Blk) neutral wiring 6. 16mm 2 Red (R), White (W), Blue (B) active wiring 7. All equipment to be sealable. Sealing covers to have 2mm dia. sealing holes. 8. Phase sequence must be red - white - blue when looking at the front of the meter. (Includes electronic) TYPICAL WIRING DIAGRAM - NEW INSTALLATION ONE CUSTOMER, COMMERCIAL POLYPHASE PANEL SIZE 350 mm W x 300 mm H Fig 5-16 Wiring diagram 1 customer polyphase (new) DS I CA 01 Version 3 Mar 2013 Page 98 of 135

99 'LINE' R W B N SERVICE FUSES AT POINT OF SUPPLY 350 mm ISOLATION FUSES NEUTRAL 600 mm POLYPHASE METER SINGLE PHASE METER FRONT 'LOAD' NOTES: mm Insulating panel to AS Back Entry 100 Amp Fuses with double terminals top and bottom to AS Back Entry Neutral link with sealing cover to take up to 25mm 2 cable 4. 4mm 2 Black (Blk) neutral wiring 5. 16mm 2 Red (R), White (W), Blue (B) active wiring 6. All equipment to be sealable. Sealing covers to have 2mm dia. sealing holes. 7. Phase sequence must be red - white - blue when looking at the front of the polyphase meter. (Includes electronic) TYPICAL WIRING DIAGRAM - EXISTING INSTALLATION ONE CUSTOMER, 2 METERS (1 POLYPHASE) PANEL SIZE 350 mm W x 600 mm H Fig 5-17 Wiring Diagram 1 customer single & polyphase (existing) A R W B N DS I CA 01 Version 3 Mar 2013 Page 99 of 135

100 'LINE' R W B N SERVICE FUSES AT POINT OF SUPPLY 350 mm ISOLATION FUSES NEUTRAL 600 mm POLYPHASE METER SINGLE PHASE METER FRONT 'LOAD' NOTES: mm Insulating panel to AS Back Entry 100 Amp Fuses with double terminals top and bottom to AS Neutral link with sealing cover to take up to 4mm 2 cable 4. Metering neutral to be 'sweated' to unbroken main neutral behind meter panel 5. 4mm 2 Black (Blk) neutral wiring 6. 16mm 2 Red (R), White (W), Blue (B) active wiring 7. All equipment to be sealable. Sealing covers to have 2mm dia. sealing holes. 8. Phase sequence must be red - white - blue when looking at the front of the meter. (Includes electronic) A R W B N TYPICAL WIRING DIAGRAM - NEW INSTALLATION ONE CUSTOMER, 2METERS (1 POLYPHASE) PANEL SIZE 350 mm W x 600 mm H Fig 5-18 Wiring diagram 1 customer single & polyphase (new) DS I CA 01 Version 3 Mar 2013 Page 100 of 135

101 'LINE' R W B N SERVICE FUSES AT POINT OF SUPPLY 350 mm ISOLATION FUSES NEUTRAL 600 mm POLYPHASE METER 2 RATE (ELECTRONIC) SINGLE PHASE METER FRONT 'LOAD' NOTES: mm Insulating panel to AS Back Entry 100 Amp Fuses with double terminals top and bottom to AS Back Entry Neutral link with sealing cover to take up to 25mm 2 cable 4. 4mm 2 Black (Blk) neutral wiring 5. 16mm 2 Red (R), White (W), Blue (B) active wiring 6. All equipment to be sealable. Sealing covers to have 2mm dia. sealing holes. 7. Phase sequence must be red - white - blue when looking at the front of the polyphase meter. (Includes electronic) TYPICAL WIRING DIAGRAM - EXISTING INSTALLATION ONE CUSTOMER, 2 METERS (1 POLYPHASE, 2 RATE ELECTRONIC) PANEL SIZE 350 mm W x 600 mm H Fig 5-19 Wiring diagram 1 customer single & 2 rate polyphase (existing) A R W B N DS I CA 01 Version 3 Mar 2013 Page 101 of 135

102 'LINE' R W B N SERVICE FUSES AT POINT OF SUPPLY 350 mm ISOLATION FUSES NEUTRAL 600 mm POLYPHASE METER 2 RATE (ELECTRONIC) SINGLE PHASE METER FRONT 'LOAD' NOTES: mm Insulating panel to AS Back Entry 100 Amp Fuses with double terminals top and bottom to AS Neutral link with sealing cover to take up to 4mm 2 cable 4. Metering neutral to be 'sweated' to unbroken main neutral behind meter panel 5. 4mm 2 Black (Blk) neutral wiring 6. 16mm 2 Red (R), White (W), Blue (B) active wiring 7. All equipment to be sealable. Sealing covers to have 2mm dia. sealing holes. 8. Phase sequence must be red - white - blue when looking at the front of the meter. (Includes electronic) A R W B N TYPICAL WIRING DIAGRAM - NEW INSTALLATION ONE CUSTOMER, 2 METERS (1 POLYPHASE 2 RATE ELECTRONIC) PANEL SIZE 350 mm W x 600 mm H Fig 5-20 Wiring diagram 1 customer single & 2 rate polyphase (new) DS I CA 01 Version 3 Mar 2013 Page 102 of 135

103 'LINE' R W B N SERVICE FUSES AT POINT OF SUPPLY 350 mm ISOLATION FUSES NEUTRAL 600 mm POLYPHASE METER 2 RATE (MECHANICAL) TIME SWITCH FUSE FRONT R W 'LOAD' B N NOTES: mm Insulating panel to AS Back Entry 100 Amp Fuses with double terminals top and bottom to AS Back Entry Neutral link with sealing cover to take up to 25mm 2 cable 4. 4mm 2 Black (Blk) neutral wiring 5. 16mm 2 Red (R), White (W), Blue (B) active wiring 6. All equipment to be sealable. Sealing covers to have 2mm dia. sealing holes. 7. Phase sequence must be red - white - blue when looking at the front of the polyphase meter. 8. Terminal Arrangements for time switch may vary according to brand TYPICAL WIRING DIAGRAM - EXISTING INSTALLATION ONE CUSTOMER, 1 METER (1 POLYPHASE, 2 RATE MECHANICAL) PANEL SIZE 350 mm W x 600 mm H Fig 5-21 Wiring diagram 1 customer 2 rate polyphase (existing) DS I CA 01 Version 3 Mar 2013 Page 103 of 135

104 N 'LINE' R W B SERVICE FUSES AT POINT OF SUPPLY 350 mm POLYPHASE METER 2 RATE METER ELECTRONIC 300 mm FRONT N R W 'LOAD' NOTES: mm Insulating panel to AS Metering neutral to be 'sweated' to unbroken main neutral behind meter panel 3. 4mm 2 Black (Blk) neutral wiring 4. Maximum 35mm 2 active cables 5. All equipment to be sealable. Sealing covers to have 2mm dia. sealing holes. 6. Phase sequence must be red - white - blue when looking at the front of the meter. This example to be used on stand-alone, heavy-duty constant load installations (e.g, irrigation pumps, chippers etc). The service fuses must be easily identified (On pole or structure above switchboard. B TYPICAL WIRING DIAGRAM - NEW INSTALLATION ONE CUSTOMER, 1 POLYPHASE 2 RATE METER PANEL SIZE 350 mm W x 300 mm H Fig 5-22 Wiring diagram 1 customer 2 rate polyphase (new) DS I CA 01 Version 3 Mar 2013 Page 104 of 135

105 'LINE' R W B N SERVICE FUSES AT POINT OF SUPPLY 350 mm NEUTRAL ISOLATION FUSES 600 mm POLYPHASE METER POLYPHASE METER R W B 'LOAD' FRONT R W B 'LOAD' NOTES: mm Insulating panel to AS Back Entry 100 Amp Fuses with double terminals top and bottom to AS Back Entry 90 Amp neutral link with sealing cover to take up to 25mm 2 cable 4. 4mm 2 Black (Blk) neutral wiring 5. 16mm 2 Red (R), White (W), Blue (B) active wiring 6. All equipment to be sealable. Sealing covers to have 2mm dia. sealing holes. 7. Phase sequence must be red - white - blue when looking at the front of the meter. (Includes electronic) TYPICAL WIRING DIAGRAM - EXISTING INSTALLATION ONE CUSTOMER, 2 POLYPHASE METERS PANEL SIZE 350 mm W x 600 mm H Fig 5-23 Wiring diagram 1 customer 2 polyphase (existing) N DS I CA 01 Version 3 Mar 2013 Page 105 of 135

106 'LINE' R W B N SERVICE FUSES AT POINT OF SUPPLY 350 mm NEUTRAL ISOLATION FUSES 600 mm POLYPHASE METER POLYPHASE METER R W B 'LOAD' FRONT TYPICAL WIRING DIAGRAM - EXISTING INSTALLATION ONE CUSTOMER, 2 POLYPHASE METERS PANEL SIZE 350 mm W x 600 mm H R W B 'LOAD' NOTES: mm Insulating panel to AS Back Entry 100 Amp Fuses with double terminals top and bottom to AS Neutral link with sealing cover to take up to 4mm 2 cable 4. Metering neutral to be 'sweated' to unbroken main neutral behind meter panel 5. 4mm 2 Black (Blk) neutral wiring 6. 16mm 2 Red (R), White (W), Blue (B) active wiring 7. All equipment to be sealable. Sealing covers to have 2mm dia. sealing holes. 8. Phase sequence must be red - white - blue when looking at the front of the meter. (Includes electronic) Fig 5-24 Wiring diagram 1 customer 2 polyphase (new) N DS I CA 01 Version 3 Mar 2013 Page 106 of 135

107 'LINE' A N SERVICE FUSE AT POINT OF SUPPLY 350 mm NEUTRAL TWO ELEMENT METER 1 CONTROLLED & 1 UNCONTROLLED 300 mm DISCONNECT SWITCH UNCONTROLLED CONTROLLED FRONT AA N 'LOAD' NOTES: mm Insulating panel to AS Back entry single pole, 80 Amp disconnection switch with double terminals top and bottom to AS Switch arm to be sealable in 'ON' or 'OFF' position 3. Back entry 90 Amp neutral link with sealing cover to take up to 25mm2. cable 4. 4mm2 Black (Blk) neutral wiring 5. 16mm2 active wiring 6. All equipment to be sealable. Sealing covers to have 2mm DIA. sealing holes. 7. Terminal arrangement for Electronic meters may vary according to brand. TYPICAL WIRING DIAGRAM - EXISTING INSTALLATION ONE CUSTOMER, ONE 2 ELEMENT METER PANEL SIZE 350 mm W x 300 mm H Fig 5-25 Wiring Diagram 1 customer 1 two-element (existing) DS I CA 01 Version 3 Mar 2013 Page 107 of 135

108 'LINE' A N SERVICE FUSE AT POINT OF SUPPLY 350 mm NEUTRAL TWO ELEMENT METER 1 CONTROLLED & 1 UNCONTROLLED 300 mm DISCONNECT SWITCH UNCONTROLLED CONTROLLED FRONT AA N 'LOAD' NOTES: mm Insulating panel to AS Back entry single pole, 80 Amp disconnection switch with double terminals top and bottom to AS Switch arm to be sealable in 'ON' or 'OFF' position 3. Neutral link with sealing cover to take up to 4mm 2 cable 4. Metering Neutral to be 'sweated, to unbroken main neutral behind meter panel. Insulation must be maintained 5. 4mm 2 Black (Blk) neutral wiring 6. 16mm 2 active wiring 7. All equipment to be sealable. Sealing covers to have 2mm dia. sealing holes. 8. Terminal arrangement for electronic meters may vary according to brand TYPICAL WIRING DIAGRAM - NEW INSTALLATION ONE CUSTOMER, ONE 2 ELEMENT METER PANEL SIZE 350 mm W x 300 mm H Fig 5-26 Wiring Diagram 1 customer 1 two-element (new) DS I CA 01 Version 3 Mar 2013 Page 108 of 135

109 B W DIRECT CONNECT POLYPHASE METER TRANSFORMER CONNECTED METER R W B N R ISOLATION FUSES NEUTRAL CT TEST BLOCK POTENTIAL FUSES R MAIN SWITCH W B RED/GREYTRACE S1 P1 FAULT CURRENT LIMITERS RED/BLACK TRACE P2 S2 WHITE/GREYTRACE S1 P1 WHITE/BLACK TRACE BLUE/GREYTRACE S2 P2 S1 P1 BLUE/BLACK TRACE P2 S2 CIRCUITS N Fig 5-27 Wiring diagram 1 customer direct connected & transformer connected metering DS I CA 01 Version 3 Mar 2013 Page 109 of 135

110 5.10 Multiple residential customer metering position Two customers Panel provided by Electrical Contractor 700 mm CUSTOMER 1 Tariff 1 Tariff 2 Tariff 3 Aurora CUSTOMER mm Tariff 1 Tariff 2 Tariff 3 Aurora Figure 5-28 Two customer metering layout Note: With all multi-customer installations, labelling of the individual flats, units or shops shall be carried-out to match the labelling of the meter panel and switchboard Premises with combined commercial and residential tariffs Panel provided by Electrical Contractor 525 mm Domestic tariff 1 Domestic tariff 2 Domestic tariff mm Commercial tariff 1 Aurora Aurora Figure 5-29 Residential and commercial layout DS I CA 01 Version 3 Mar 2013 Page 110 of 135

111 Note: With all multi-customer installations, labelling of the individual flats, units or shops shall be carried-out to match the labelling of the meter panel and switchboard Load limiters for maximum demand purposes Aurora no longer allows the fitting of load limiters to meter panels for the purpose of limiting maximum demand 5.11 LV installation in excess of 100 Amp/phase All requirements of section Connecting to Aurora s distribution system must be met for these installations Transformer connected metering This section provides the electrical contractor or consultant with Aurora s requirements to ensure that adequate provision is made for the installation of current transformers and associated equipment. Current transformers are required where a three-phase load on any tariff is greater than 100 amps per phase. Low voltage transformer connected metering equipment is provided by Aurora Energy as follows: 1. Current transformer test block, current transformers, potential fuses (including 10 Amp fuse links) and CT/Potential cable. The Electrical Contractor installs the current transformers during switchboard alteration/construction, or they are installed by the switchboard manufacturer during the assembly of a switchboard Transformer connected metering approval For all transformer-connected metering, the proposed electrical and metering arrangements shall be approved before: 1. The customer or electrical contractor makes provision for installation of the metering equipment. 2. Current transformers and associated metering equipment are issued. Drawings of proposed electrical and metering arrangements shall be forwarded to your local Service Connections Centre contact for approval. The drawings shall be submitted at least 10 working days before current transformers are required. Approval given is for compliance with the Service and Installation Rules only. It is not for compliance with AS/NZS 3000 or any other standard. Information required for approval is: 1. Anticipated Maximum Demand for the installation. 2. Proposed conductor sizes. 3. Selected Tariff(s) and their loadings. DS I CA 01 Version 3 Mar 2013 Page 111 of 135

112 4. The area to be provided for installation of all of the metering equipment. The minimum area shall be in accordance with requirements in this document. 5. Access arrangements to metering panel. 6. The design of switchboard or switchboard cubicles used showing in detail, the proposed arrangement for installation of current transformers (and potential transformers VTs. if applicable). 7. Equipment installed on the line side of metering equipment. Options available are detailed in this document. 8. Provisions made for security sealing of equipment and un-metered conductors in accordance with requirements in this document. 9. Customer/client name, se address, electrical contractor and Aurora project ID (if known) must be attached to switchboard plans when submitted Transformer connected metering equipment installation requirements Electrical contractors and switchboard manufacturers shall comply with the following requirements for provision and installation of current transformers and associated metering equipment. 1. Except under the provisions of n), all current transformers and potential fuses shall be mounted on the load side of main circuit breaker. Unless approval has been given by an authorised Aurora Energy representative. 2. Multiple current transformers installations are to have individual isolation and sealing points. (Locking dogs shall not be removed) 3. Electrical contractors shall provide facilities for mounting the current transformers, Dimensions of current transformers are listed under this section. 4. If busbars are used, the section passing through the C.T. window shall be easily removable. (minimum length of 300 mm). 5. If insulated cables are used, joints shall be made near the current transformers to allow for easy removal of the current transformers. 6. Metal cable sheaths shall be terminated prior to conductors passing through current transformers windows. 7. No joints shall be made within the tunnel of the current transformers window. 8. Meters may be mounted remote from the current transformers to a more accessible metering position. A maximum route length of 15 metres shall apply from the current transformers to the meter location. Note: Route length is the length of the wiring loom between the current transformers and the meter. For lengths exceeding this, approval must be sought from Aurora Energy. When using 4mm² cables, the route length must not exceed 15 metres. (Total circuit length 30 metres) Where control equipment for fire alarms and lifts etc. is connected from the line side of the metering current transformers, the conductors must pass through the current transformers windows as shown in the following diagram. DS I CA 01 Version 3 Mar 2013 Page 112 of 135

113 Note: As control conductors for fire alarms and lifts etc. are normally connected prior to the main circuit breaker, Aurora Energy requires electrical contractors to give special consideration to providing fault protection in the form of fault current limiters or circuits breakers as well as mechanical protection, segregation and enclosure of cables. METER METERING POTENTIAL FUSE CIRCUIT BREAKER GENERAL PURPOSE CIRCUITS FIRE ALARM FUSE CURRENT TRANSFORMER FIRE ALARM Figure 5-30 Metering fire alarms Provision shall be made for sealing escutcheon panels and removable panels that allow access to un-metered conductors or current transformers. Current transformers shall be mounted behind a removable panel the words "Aurora Energy CURRENT TRANSFORMERS" shall be marked on the front of the panel. Main switches, either in the ON or OFF position, or any other latching mechanism, shall not restrict the removal of the panel(s) covering current transformers and associated equipment. If the main switch has this sort of latching mechanism, the current transformers shall be in a separate accessible sealed cubicle. P.V.C. 32 mm electrical conduit, complete with associated wiring (supplied by Aurora), must be installed from the current transformers secondary terminals to the metering position by the switchboard installer/manufacturer. Aurora Energy personnel will connect the secondary wiring if requested. Aurora Energy will supply the potential fuses. Electrical contractors and authorised switchboard / meter panel manufacturers must install potential fuses at the line side of the current transformers in accessible locations under the following conditions. 1. On the bus bar (preferred practice). 2. Adjacent to the bus bar installation; must adhere to Wiring Rules. 3. Adjacent to insulated cables, being used as mains conductors. 4. Where potential fuses cannot be mounted as per 1, 2 or 3, the meter panel manufacturer would mount them on a meter panel. Potential cable size must adhere to Wiring Rules. DS I CA 01 Version 3 Mar 2013 Page 113 of 135

114 Notes: 5. Where fire alarm equipment or lifts are fed from the line side of the main switch, the potential fuses must also be connected on the line side of the main switch. 6. Approval shall be obtained for any customer equipment not directly associated with Aurora s metering to be installed under sealable panels. 7. Electrical contractors or switchboard/meter panel manufacturers shall install potential cables in 32 mm p.v.c. electrical conduit to the metering position and connect the cables to the fuse holder bases. Fuse cartridges must be left out. Sufficient length shall be provided for Aurora Energy staff to connect to the metering equipment. 1. Under the above conditions, potential fuses shall be installed on a single insulated panel or individual insulated panels complying with Australian Standards before connection to the bus bars or cables. 2. The panel(s) shall have sufficient area so that the fuses can be accessed without touching live parts. 3. Connections for potential fuses and other tariffs using direct connect meters shall be taken from the line side of the current transformers Installation and protection of line side equipment The electrical contractor or switchboard manufacturer shall supply current transformer equipment (fuses, cable, links etc.) not supplied by Aurora Energy. In addition, where loads exceed 100 amps per phase the electrical contractor shall supply the necessary fuses, links, switches or other equipment required to break down conductor gauge to a suitable size for direct connection to Aurora Energy s metering equipment. Aurora Energy will terminate the secondary wiring at the current transformers. Potential fuses shall have provision for sealing. If these fuses are located behind a door or panel, then the door or panel shall be sealable and labelled "AURORA ENERGY POTENTIAL METERING FUSES BEHIND DOOR/PANEL". The metering neutral conductor for current transformers installations shall be connected with one of the following options: 1. Sealable where it joins the main neutral bar 2. Crimped in the same lug as the main neutral 3. Soldered directly to the main neutral For current transformers installations involving additional direct connect tariffs, the electrical contractor shall terminate the direct-connect metering line conductors at the line side of the current transformers. This is necessary to avoid the current transformers metering also measuring direct-connect line conductors. In accordance with the Wiring Rules, it may be necessary to install current limiters to protect the direct connect line conductors. DS I CA 01 Version 3 Mar 2013 Page 114 of 135

115 If fuses are required to be installed where the direct-connect line conductors tee off from the preceding main conductors, the electrical contractor shall supply these fuses and install as per the conditions for potential fuses. Notes: 1. Provision shall be made for these fuses to be sealed with Aurora's security seals. 2. Any conductors not enclosed behind a panel shall be double insulated. 3. If protection fuses are installed on or adjacent to the preceding mains conductors, they must be accessible to the electrical contractor. These fuses are the responsibility of the customer. 4. An escutcheon panel must be installed for bus-bar protection. 5. If fuses are mounted behind a door or panel, then access shall be available without the need to open or close any switches. 6. The door or panel shall be clearly labelled -"AURORA ENERGY METERING FUSES BEHIND THIS DOOR/PANEL". The following drawings show typical arrangements for these fuses: DS I CA 01 Version 3 Mar 2013 Page 115 of 135

116 For line side protection Option 1 Figure 5-31 Line side protection Option 1 DS I CA 01 Version 3 Mar 2013 Page 116 of 135

117 For line side protection Option 2 Incoming Mains Cable rating to match fuses Busbar mounted fault-limiting fuses: Arranged so that fronts are accessible without exposure to live conductors Maximum capacity 100 A / phase Busbar Fuses: Provided by contractor Sealing provisions required Current transformer (CT) metering potential fuses: Busbar mounted Provided by Aurora Current transformers: Provided by Aurora Current transformer metering test links: Provided by Aurora Tariff meters: Provided by Aurora Meter panel: Provided by Contractor C.T.and Meter Customer tariff isolators: Provided by Contractor Figure 5-32 Line side protection Option 2 DS I CA 01 Version 3 Mar 2013 Page 117 of 135

118 Equipment Provided by Aurora - Example Diagrams Figure 5-33 Typical CT switchboard cubicle arrangement DS I CA 01 Version 3 Mar 2013 Page 118 of 135

119 Remote current transformer arrangement This is an example arrangement that is situated outdoors and is designed to meet meter position requirements and to allow meters to be positioned outside of a security area. It provides ready access for meter reading and all types of maintenance. N A MAIN SWITCHBOARD / METERING ENCLOSURE 4 mm 2 Neutral Link Earth Link Main Circuit Breaker Potential Fuse Current Transformer AURORA METERING Main Circuit Breaker SWITCHBOARD Circuit Breakers Sub Circuits Figure 5-34 Remote CT metering wiring diagram DS I CA 01 Version 3 Mar 2013 Page 119 of 135

120 AURORA METER PANEL SEALABLE PANEL CT CT CT MAIN CIRCUIT BREAKER MAIN NEUTRAL & EARTH LINKS BEHIND CONDITIONS OF USE: 1. Suitable for single tariff CT applications only 2. Switchboard Section (Layout not shown) can be fastened 'back to back' or remote from Main Switchboard/ metering enclosure. 3. M.E.N. connection shall be located in main switchboard / metering enclosure and accessed via unsealed panel 4. 4mm² metering neutral shall be sweated (& appropriately insulated) to consumer main neutral within sealed CT chamber 5. Potential fuses can be located within sealed CT chamber, or as shown in this case on meter panel 6. Meter enclosure door shall be fitted with Aurora master keyed lock Current transformers Aurora uses only window type current transformers. Ranges normally available are shown in the following table: Main Switch (Amps) Up to ,630,800, ,1250,1600 to 3000 Normal C. T. extended size range 200/5 800/5 1500/5 Table 5-1 Current transformer types DS I CA 01 Version 3 Mar 2013 Page 120 of 135

121 The following diagram shows the dimensions of current transformers in use: B A D C 80mm 75mm Note: slot dimensions are 25 mm x 10 mm Figure 5-36 current transformers dimensions Typ e S T W Ratio 200/5 Ip = 400 Amp max 800/5 Ip = 1600 Amp max 1500/5 Ip = 3000 Amp max Height A (mm) Table 5-2 current transformers dimensions Width B (mm) Window Position C (mm) CT Width D (mm) Transformer connected energy metering - low voltage Panel Provided by Electrical Contractor. Use either option (a) or (b) for current transformer connected metering. DS I CA 01 Version 3 Mar 2013 Page 121 of 135

122 Option (a) - Meter space 335 mm high x 525 mm wide Services and Installation Rules 525 mm mm mm mm 235 mm METER TEST LINK 155 mm 50 Figure 5-37 current transformers panel dimensions option (a) Option (b) for space 540 mm high x 210 mm wide 165 mm mm 155 mm mm METER TEST LINK mm mm Figure 5-38 Current transformer panel dimensions option (b) If communications for interfacing with meters are required at the site, contact the Service Centre for arrangements before construction. Note: Clearance between equipment & panel perimeter to be a minimum of 50 mm. Clearance between meter panel and door (if fitted) to be 140 mm Customer-owned metering The customer has the option of purchasing meters from Aurora Energy through an approved meter supplier for check metering or sub-circuits. The meters are to be marked customer owned meter High voltage metering For high voltage installations, Aurora energy shall be contacted before proceeding DS I CA 01 Version 3 Mar 2013 Page 122 of 135

123 5.14 Un-metered supplies Un-metered supplies (other than public and contract lighting) Aurora recommends that electrical contractors discuss with and have their customer s approval in principle for the reasons why an un-metered supply arrangement is being sought. The network tariffs for un-metered loads are no different to the metered load network tariffs so there is no financial advantage for the customer for having an un-metered load. The assessment method as stated below is designed to minimise the financial risk to the retailer and network service provider if load spikes or dips in any way. Aurora s basic definition of a constant load is a load that under normal operating conditions does not vary during any 24 hour period of any day for all days of the year. Loads that regularly switch on and off such as lighting, are not considered to be constant loads. An installation with a constant load of less than 1000 watts may qualify to be un-metered. Some examples of non-metered supply installations (but not limited to) are, electric fence supplies, traffic light supplies, communication equipment supplies, TV amplifier supplies at unit developments etc Installations with a constant load greater than 1000 watts may be able to be un-metered but Aurora must receive an application and approval must be granted for all installations prior to installation and connection. Installations must be designed and constructed in such a way that equipment (other than the assessed load equipment) cannot be connected to the installation by unqualified and unauthorised personnel. However, exceptions to this may be considered and approved under strict conditional circumstance (e.g. a GPO or light within a traffic supply intended to be used for maintenance purposes only). The following details of the un-metered supply must be permanently kept on site by way of a schedule or label: 1. The load size and description of the un-metered load. 2. The date the un-metered supply was installed. 3. The name of the electrical technician it was installed by. 4. The name of the electrical-contracting firm it was installed by. 5. Provision for details of the load assessment details as taken by the metering technician (these details are to be filled-in by the metering technician at the time of assessment). 6. Provision for the name of meter technician it was assessed by (these details are to be filled-in by the metering technician at the time of assessment). 7. Provision for the date it was assessed (these details are to be filled-in by the metering technician at the time of assessment). DS I CA 01 Version 3 Mar 2013 Page 123 of 135

124 If changes are made to the base load of an un-metered supply, electrical contractors must ensure that they notify Aurora and request a reassessment of the non-metered supply by way of submitting an EWR. The un-metered load must be assessed by Aurora metering technicians at the time of connection of the un-metered supply. Without prior approval by Aurora, the load profile at a non-metered installation must not spike or dip any more than 5% of the base load. The un-metered load will be assessed by measuring and recording the peak load (spike) of the installation (measured in watts) e.g. Base load 900 watts with a 920 watt peak load. Assessment for market data and retail billing is 920 watts. 920 watts x 24 hours = kwhrs (assessed average daily usage). IMPORTANT NOTE: Changing the base load of a non-metered supply or using a non-metered supply in a non-approved manner without the prior knowledge, assessment or approval of the supply authority is considered by Tasmanian law to be illegal. Any such offence may be investigated and possibility prosecuted in court by police Un-metered public lighting Un-metered public road lighting is the normal lighting arrangements that are situated in most public roads and streets. Un-metered public lighting is considered a complex connection Public lighting is characterised by the following: 1. Aurora provides a road lighting design service to road lighting authorities. 2. Aurora normally owns and maintains the lighting fitting, globe, arm and wiring at Aurora cost as components of Aurora s road light system. 3. The road lighting authority may be required to contribute towards the cost of overhead extensions and underground wiring. 4. The road lighting authority is required to meet the cost of, and own and maintain, all poles required solely for the purpose of supporting a road light. 5. The lighting fitting, globe and arm and pole are normal Aurora stockholdings. 6. Aurora normally maintains the assets as part of the un-metered public lighting tariff. 7. Where a public road lighting installation is to become part of Aurora s road lighting system to be owned, operated and maintained by Aurora, the installation must comply with Aurora s material and construction standards and the detailed design must be submitted to Aurora for approval prior to construction. 8. Aurora normally undertakes installation of the lighting fitting, globe, arm and pole. 9. There is generally no defined point of supply for public road lighting installed with overhead wiring systems. DS I CA 01 Version 3 Mar 2013 Page 124 of 135

125 10. Supply arrangements and a point of supply must be negotiated for new underground wiring systems installed for public road lighting Metered public lighting Metered public lighting is generally associated with non-typical or character lighting that some councils require for streetscape lighting. Road authorities including councils may choose to install metered lighting installations and not avail themselves to Aurora s road lighting system, products or services. Metered Public Lighting is considered a Complex Connection Metered public lighting is characterised by the following: 1. The lighting installation is to comply with the AS/NZS 3000 Wiring Rules and is owned by the road authority. 2. There is a defined point of supply, metering and fusing-point for the lighting installation. 3. The metering and fusing is generally separate from Aurora assets. 4. Points of supply and metering arrangements must be negotiated with Aurora for metered lighting installations installed within public areas prior to construction Un-metered private lighting Un-metered private lighting is associated with Aurora s road lighting system where it is impractical for the customer to provide their own lighting. Flood lighting a building from an Aurora pole in the street as a typical example. (ie Aurora is providing illumination.) Un-metered private contract lighting is considered a Complex Connection Un-metered private lighting is characterised by the following: 1. Un-metered private contract lighting is no longer approved where a metered installation already exists on the site. 2. Aurora does not provide a design service for private lighting but can provide advice on the options available under this arrangement. 3. Private contract lighting is normally installed on Aurora-owned poles 4. All components of the installation including the lighting fitting, globe and arm are supplied and installed at the customer s cost. 5. All components of the installation including the lighting fitting and arm is maintained at the customer s cost except for replacement of the globe which is part of the contract lighting tariff. 6. The globe and arm must be normal Aurora stock-holdings. 7. Aurora normally undertakes installation of the lighting fitting, globe and arm. 8. There is generally no defined point of supply for the lighting. DS I CA 01 Version 3 Mar 2013 Page 125 of 135

126 9. Un-metered supply and installations arrangements must be negotiated with Aurora for all proposed private contract lighting. 10. Un-metered private contract lighting is no longer approved for new installations connected by an underground wiring system to privatelyowned lighting fittings and poles, posts etc. New installations of this type should fully comply with the AS/NZS 3000 Wiring Rules and be metered. For example, new area lighting in council parks and gardens. DS I CA 01 Version 3 Mar 2013 Page 126 of 135

127 Appendix A Appendix Copy of Electrical Works Request form: A.1 Electrical works request form (EWR) The Electrical Works Request (EWR) is an Aurora Energy document that is used to capture accurate information from electrical contractors to allow DS I CA 01 Version 3 Mar 2013 Page 127 of 135

128 service connection work to be carried out. An EWR should only be submitted when you require Aurora Energy to perform work at an installation, a tariff change is required or there is a status change to the installation. The EWR should only be submitted when work is completed or a T/Up is required or you are an Accredited Metering Installer (Formerly Authorised Contractor) intending to perform Work. A.2 How to complete an electrical works request (EWR) The following provides a guide to completing the required details for an Electrical Work Request (EWR) form shown on the previous page. 1. Customer details Customer's name Enter date Customer's Retailer Customer details Date Customer name Retailer name Enter today s date (the date that you are completing and sending the EWR form) Enter the name of the customer that has the agreement with the Energy Retailer Enter the name of the Energy retailer that the customer has an agreement with. (NOTE: There must be an agreement with a retailer for the work to be submitted) 2. Installation details Include Installations NMI number if known Write existing meter numbers (Meters on same Installation) Write address details Write Aurora Project ID (If known) Write Aurora pole ID Write readings of existing meters Meter number of a neighbouring installation Is it before or after this meter number? DS I CA 01 Version 3 Mar 2013 Page 128 of 135

129 Installation details Address Provide pole ID Project ID NMI Existing installation New installation This is the address we need to attend to perform the work or change the detail in the computer records. Note: Provide complete address of the property. Please include flat or unit numbers (if applicable). Please include street numbers or rural address (RA) numbers. Correct street name, suburb or town, postcode. Lot numbers are not acceptable; if there is no street number available, provide land parcel ID number. This is the six-digit unique ID number on the pole. Generally given for complex connections. National Meter Identifier A nation-wide identification system that will replace the existing installation number. This is shown on the customer s account. If the premises are already metered you must provide the existing meter numbers of that installation and the readings of those meters. If possible, with new installations, please provide the meter number of a neighbouring installation and whether it is before or after that installation. Installations are always read on the left. 3. Installation class Select and mark correct box If marked yes install AMI number here Please write installation type in space provided if Other box is marked Installation class - Is the installation one of the following? Domestic House/flat/unit used as a dwelling by the occupants Commercial Industrial Shop, warehouse, workshop etc. Large manufacturing or processing installations Farm Unmetered Any farm building or pump that is not a dwelling Unmetered supplies as defined in chapter 5, please define in box provided under Other DS I CA 01 Version 3 Mar 2013 Page 129 of 135

130 4. Crew requirement Mark one of these boxes Mark one of these boxes Mark one of these boxes If Yes what type of crew is needed? Is a site visit require by an Aurora crew Crew requirements Is a tee up required? One of these boxes must be marked. Are you performing the work as a Accredited Metering Installer? Is an Aurora crew required to perform work on site? Crew required One of these boxes must be marked. If marked Yes, enter the AMI number of installer. Yes must only be marked if the Electrical Contractor submitting the EWR is the AMI. The job will be issued to the nominated installer. If Yes one of these boxes must be marked. One of these boxes must be marked. 5. Type of work Does the installation currently have the power on? Type of work Is the Installation Energised? One of these boxes must be marked. DS I CA 01 Version 3 Mar 2013 Page 130 of 135

131 6. New installation If a new installation mark one of these boxes New installation Builders pole Builders supply not in a permanent location Temporary Supply in Permanent position Builder s supply in permanent location Permanent Supply Restore after faults/fire Submission of new EWR after defects Permanent Supply This box is to be ticked if this EWR is submitted to re-fit service and meter to an existing installation after repairs due to faults or fire. (This is classed as a new installation, so ensure that your customer has an agreement with an electricity retailer in place) This box to be ticked if a previous EWR was submitted for the same installation but work was not carried out due to defects found by the Aurora crew. This is not to be used if a DEI has been issued. 7. Existing Installation If an existing installation, mark one of these boxes Existing installation New mains Additions/Alterations to POA Removal of individual meter Removal of service and all meters (Abolishment) Mark this box if the mains are being replaced or added to an installation. Mark this box if there are changes required at the POA- (Fascia change, new raiser, condemned pole etc). Please note type of change in comments area. Mark this box for removal of a tariff with the rest of the installation still left connected. Mark this box if installation is to be completely removed - (Builders supply etc). This installation will then be classed as Abolished. Only a new installation can then be initiated on this site. Additions/Alterations to Metering Re-energisation after faults/fire Six month safety Check Submission of new EWR after defects Mark this box if tariff to be added or changed Mark this box if installation is de-energised after faults/fire and the service and meter is still on site. Mark this box if you have completed a six-month safety check This box to be ticked if a previous EWR was submitted for this installation but work was not carried out because of defects found by the Aurora crew. This is not to be used if a DEI has been issued. DS I CA 01 Version 3 Mar 2013 Page 131 of 135

132 8. Comments Add comments here Comments Work required Please add brief description of work required, reason for tee up, access, or any other information that you think may be of use. 9. Supply arrangement Mark how the installation is supplied Supply arrangement Overhead Underground (turret) Underground (private pole) Underground (Aurora pole) Other PEAS form attached Mark this box if the installation is/is to be fed directly by a service. Mark this box if the installation is to be supplied from a turret, streetlight standard, or underground cabinet. Mark this box if the consumer s mains are underground and up a private pole. Mark this box if the consumer s mains are underground and up an Aurora pole. Note: this will require the completion of a PEAS (Private Equipment on an Aurora Structure) form. Refer to section Mark this box if another supply type applies (substation etc) Please write supply type in box provided. This box must be checked. If marked Yes, the PEAS form must be submitted with this EWR. DS I CA 01 Version 3 Mar 2013 Page 132 of 135

133 10. Overhead details Is POA new or existing? Does the service require upgrading? Enter total number of spans Enter distance in metres Is traffic control required? Overhead details - Fill this area in if installation is fed via an overhead service POA Service upgrade required Service length in metres Total number of spans Traffic control required? Mark whether POA is in a new or existing position Mark whether service or service fuse requires upgrading Enter the total service length in metres (include all spans) Enter total number of spans from supply point (include private spans) Traffic control is required when the service crosses a major road. Mark this box if Aurora needs to install as new service or renew a service across a road with medium to high traffic. 11. Metering details Method of connection Type of metering required Tariffs Metering details - This area must be filled in (including un-metered supplies Method Type Circuit Changes Choose either direct connect (formerly whole current ) or transformer connected (formerly CT ) Choose either uncontrolled (no restriction on power flow) or controlled (switched by timer, time of use or demand type metering) or embedded generation (where the power flows through the meter in two directions, e.g. solar panels, gas generator etc) Enter circuit (tariff) types or changes required DS I CA 01 Version 3 Mar 2013 Page 133 of 135