Service & Installation Rules

Service & Installation Rules CONSOLIDATED AMENDMENTS - MARCH 2011 Published 3 September 2012 SA Power Networks www.sapowernetworks.com.au Issue 3 September 2012 Page 1 of 55

Revision Notes: DATE SECTION EXPLANATION March 2011 September 2012 Copyright 2012 SA Power Networks. Parts of this publication have been reproduced with the express permission of AGL Electricity, CitiPower, Powercor Australia, TRU Energy and United Energy Distribution. This publication is copyright. Except as permitted under the Copyright Act 1968 no part of this publication may be reproduced by any process without the specific written permission of the copyright owner. All rights reserved Various Full Document Amendments to Sections: Section 1:1.1.2, 1.3 Section 2: 2.2, 2.3, 2.6.3, 2.7, 2.10, 2.12, 2.15.1 Section 4: 4.4.1, 4.4.2 Section 5: 5.3.3, Table 5.1, Figures 5.1 & 5.2, 5.6 and Figure 5.5 & 5.6 Section 6: 6.1.1, 6.2.1, 6.4, Table 6.7, 6.8.4.2 Section 7: 7.1.2, Table 7.1, 7.1.3, Table 7.4, 7.2.2.3, 7.3.1, 7.3.6.6, 7.3.6.9, 7.4.5.2, 7.4.6.1, 7.4.6.3.2, 7.7.1, 7.7.1.1, 7.7.1.2, 7.7.2, 7.8.8 Section 8: 8.8.1, 8.8.3, 8.9.1, 8.11.5, 8.12.1, 8.12.2.3, 8.12.3.2, 8.12.3.3, 8.12.7 Section 9: 9.1, 9.4, Table 9.1, 9.13.2.1, 9.13.3.1, 9.13.3.2, 9.13.3.3 Also updated Appendices: Appendix A1: A1.1, A1.2, A1.3, A1.4, A1.6, A1.7 Shts 1 & 3, A 1.8 Shts 1 & 5, A1.9 Appendix A2: A2.4.3.3, A2.4.3.4 Appendix A4: A4.3.1, A4.3.3.2, A4.3.3.3, A4.3.5 Appendix A5: A5.1 Shts 1 to 5 Company name only. All Other content of this document ar as per March 2011. Issue 3 September 2012 Page 2 of 55

Section 1- General 1.1.2 Application of this document Replace paragraph 2 The requirements of this document apply to customers and their agents in relation to electrical installations connected to or intended to be connected to SA Power Networks distribution network. Alterations of, or, additions to an existing electrical installation shall be deemed to be a new electrical installation and are covered by the requirements of this document. 1.3 Definitions Add and replace the respective definitions Community Lot - is a separately owned Lot within a Community Title Scheme. Common Property - Property within a Community Title Scheme that is owned by the community corporation. The community corporation is comprised of all lot owners within the Community Title Scheme. Common property relates to those parts that do not form part of a lot and typically includes the land for the service infrastructure and driveways that are shared. Roads within Community Title Schemes are generally common property. Community Title Scheme - is the division of land into at least two lots and generally an area of common property. The Community Title Act provides for implied easements within a Community Title development. These implied easements only relate to private service infrastructure and do not apply to infrastructure that is owned by SA Power Networks. Dual Fronted Property - means a property that has a frontage on two opposite boundaries, one of which is the street address and the other being another public area. MNSP - Manager Network Standards & Performance. Registered Meter Provider - is a person registered with AEMO who provides and maintains metering installations in accordance with the National Electricity Rules requirements. Issue 3 September 2012 Page 3 of 55

Regulator - for the purposes of these rules a reference to the regulator means the agency authorised by law to administer the relevant act, code, standard or requirement. This may be: The Australian Energy Regulator (AER), Office of the Technical Regulator (OTR), Australian Competition and Consumer Commission (ACCC), Essential Services Commission of SA (ESCOSA), Australian Energy Market Commission (AEMC), Australian Energy Market Operator (AEMO), Or other agencies Strata Title Development - A Strata Title Development is regarded as a Community Title Scheme for the purpose of this document. All terms related to Strata Title have the equivalent meaning to the terms relating to the Community Title. Torrens Title - A Torrens title land division is a division of land into at least two allotments, which are held / owned independently of one another. A Torrens title land division requires that each new allotment has frontage to a public road or adequate access to a public road. There are generally no shared facilities or infrastructure as each allotment must have its own infrastructure arrangements in place. Issue 3 September 2012 Page 4 of 55

2.2 Copyright Replace paragraph 1 Section 2- Introduction Copyright 2011 SA Power Networks. Parts of this publication have been reproduced with the express permission of AGL Electricity, CitiPower, Powercor Australia, TRU Energy and United Energy Distribution. 2.3 Innovation Replace paragraph 1 These Rules do not preclude other methods, innovation, or technology that achieves the same outcomes as the specifications detailed in this document. Provided always there is compliance with AS/NZS 3000. Any such proposal should be put to SA Power Networks Manager Network Standards & Performance (MNSP) for acceptance prior to commencement of work. 2.6.3 Revision Replace paragraph 2 Correspondence for this purpose should be forwarded to the SA Power Networks MNSP. Any approved written submissions will be incorporated in the annual review of this document. 2.7 Service & Installation Rules Management Contact Replace paragraph 1 Contact for any matters related to the content of these Rules may be made through written correspondence to the SA Power Networks MNSP or (web site www.etsautilities.com.au). 2.10 Application & Application Responsibilities Replace paragraph 1 These Rules are applicable from 1 July 2011 with a grace period until 31 December 2011. 2.12 Exceptional Circumstances Replace paragraph 4 Any request in this regard shall be addressed to: Manager Network Standards & Performance, SA Power Networks P.O. GPO Box 77, Adelaide 5001. Issue 3 September 2012 Page 5 of 55

2.15.1 Scope Replace paragraph 1 This section is intended to provide an understanding of the basic relationships of industry stakeholders, (regulators and distributor, retailers, meter providers, customers and their agents), in respect to connection of electrical installations to SA Power Networks Distribution Network. Refer to figure 2.1 Stakeholders at the end of clause 2.15.2.3. Essential Services Commission of South Australia (ESCOSA) Regulators Office of the Technical Regulator (OTR) The Australian Energy Regulator (AER) Distributor Retailers Customers Customer Agent (Refer 2.15.2.1) (Refer 2.15.2.2) Figure 2.2 renamed Figure 2.1. Replace with new Figure 2.1 Contracts & Agreements Figure 2.1 Stakeholders Service & Installation Rules E.g., Registered Electrical Contractor (Refer2.15.2.3) Installation Issue 3 September 2012 Page 6 of 55

Section 4- General Rules 4.4.1 Equipment Required to be Accepted Replace paragraph 4 All enquiries and submissions relating to acceptance of equipment should be forwarded to the Manager Network Standards & Performance (MNSP) in accordance with Clause 2.7 at the earliest opportunity. 4.4.2 Equipment Not Required to be Accepted Replace paragraph 1 It is recommended manufacturers and/or suppliers of equipment used to interface with SA Power Networks assets and not required to be submitted for acceptance, submit their proposed equipment and installation arrangement to the SA Power Networks MNSP for comment prior to use where there is no clear evidence of compatibility or compliance with SA Power Networks assets and these Rules. 4.8 SA Power Networks Security Seal Replace paragraph 1 All portions of an un-metered supply to a customer installation including access panels, junction boxes, metering equipment, lockable isolators, fuse boxes and enclosures shall be made ready for sealing using an SA Power Networks security seal. Sealing shall not rely on holes to be aligned through nuts and threaded studs.. Issue 3 September 2012 Page 7 of 55

Section 5- Supply Application, Connection & Disconnection 5.3.3 Reconnection to the SA Power Networks Distribution System Replace paragraph 1 For installations that have been disconnected for an extended period of time (12 months or greater) or any alterations made during the period of disconnection, SA Power Networks will require a valid Electrical Certificate of Compliance. Replace Document Form A Table 5.1: Documents for Most Frequently Requested Work Document Availability & Submission Submit For All work including: New supply Available from SA Power Networks & Form A Alteration submitted by the Electrical Contractor See Note 1 Public lighting / Agent to the Retailer PV metering Abolishment of electrical supply Note 1: Refer to flowchart at the end of this section Issue 3 September 2012 Page 8 of 55

Form B SA Power Networks Quotation request (online via web site only) Figure 5.1 Sample Form B Issue 3 September 2012 Page 9 of 55

Figure 5.2 Sample Form A Issue 3 September 2012 Page 10 of 55

5.6 Charges Replace paragraph 3 Copies of standard charges can be referenced on SA Power Networks and Essential Services Commission websites - see references in clause 1.2 of this document. Details of charges should be determined and/or confirmed prior to the work taking place. Issue 3 September 2012 Page 11 of 55

Replace Figure 5.5 1. Submit Forms: FORM A Application for New Electricity Supply & Alteration of Service/Meter Or Permanent Removal of Electricity Supply Process of New & Notice of Alteration Connections via On-line booking Electrician Logs onto SA Power Networks REX Website 2. To make a booking: Electrician Logs onto SA Power Networks REX Website Select Job Option and Proceed to Insert Requested Information Select Search Button to Retrieve a List of All Electricians Jobs Check Job Status Figure 5.5 Review Information NO Select Job Is the Job Set RFAP? Selects Submit Button YES Select an Appointment Type Select Form & To Connection Date Submit Booking Issue 3 September 2012 Page 12 of 55

Replace Figure 5.6 FORM A Application for New Electricity Supply & Alteration of Service/Meter Or Permanent Removal of Electricity Supply Electrician/Agent submits Form A to Retailer via either REX or FAX No Is the information correct? Builders & Contractors Line receives the application electronically Scoper rings electrician and advises of problem Issues resolved Yes No Process of New & Notice of Alteration Connections Is the job ready for appointment? Yes Retailer receives Form A to be processed Retailer sends application to SA Power Networks Does the job need scoping? Job goes to scopers Scoper sets job Ready Figure 5.6 Yes No No (Direct Issue) Is Form A filled in correctly? Retailer processes the application Electrician makes an appointme nt with the Builders & Contractors Line Electrician rings SA Power Networks Builders & Contractors line to arrange Appt. or Books On-Line. Date is set for a connection Yes Issue 3 September 2012 Page 13 of 55

Section 6- Supply Characteristics and Supply Use 6.1.1 Supply Systems Replace 3 dot points 3 Phase, 4 Wire 230 / 400 Volt System A three phase, four-wire electricity supply of alternating current at a frequency of nominally 50 Hertz and having an approximate sinusoidal wave shape. The voltage is nominally 230/400 Volts r.m.s. in accordance with AS60038 - Standard Voltages. 2 Phase, 3 wire 230 / 460 Volt System A two phase, three-wire electricity supply of alternating current at a frequency of nominally 50 Hertz and having an approximate sinusoidal wave shape. The voltage is nominally 230/460 Volts r.m.s. in accordance with AS60038 - Standard Voltages. 1 Phase, 2 wire 230 Volt System A single phase, two-wire electricity supply of alternating current at a frequency of nominally 50 Hertz and having an approximate sinusoidal wave shape. The voltage is nominally 230 Volts r.m.s. in accordance with AS60038 - Standard Voltages. 6.2.1 Number of Services Add new 3 rd paragraph Individual connection arrangements for separate buildings or properties will only be considered for developments involving Torrens titles where buildings and electrical installations are constructed such that they do not cross title boundaries (excluding consumers mains entering the road reserve or registered easement). 6.4 Identification of Multiple Supplies Replace paragraph 4 Labelling and diagrams are also required for supply changeover arrangements, generator connections and multiple metered installations. Refer to clause 6.8.4.2 and 7.8.2.6. Issue 3 September 2012 Page 14 of 55

Table 6.7 - Three Phase Motors 400 Volts Replace Table 6.7 Motor Size not exceeding 1.5 kw exceeding 1.5 kw, but not exceeding 3.75 kw Exceeding 3.75 kw I = 26 Amperes Allowable Current I I = (Motor kw x 17.5) Amperes (a) I = (Motor kw x 3.5) + 53 Amperes, or (b) I = total kw of motors installed x 1.1 Amperes Where, 6.8.4.2 Installation and Connection to Grid Replace 3rd dot point I = the starting current of the largest of the other motors installed calculated in accordance with (a) above, whichever is the greatest. A label indicating that an alternative power supply system is connected to the electrical installation shall be fitted at the meter position and main switchboard. Refer to clause 4.5. Issue 3 September 2012 Page 15 of 55

7.1.2 Type of Service Replace paragraph 6 Section 7- Low Voltage Supply The availability of a particular configuration of service may be restricted by conditions at or near a particular supply address. Where underground consumer s mains are located within public land the customer must obtain Council, Department of Transport, Energy & Infrastructure (DTEI) or the relevant authorities approval to install under ground electrical cables in the road reserve. Replace Table 7.1 Service Capacity Required Not exceeding 70A per phase Exceeding 70A per phase Exceeding 100A per phase Exceeding 200A per phase Table 7.1 Standard Connection Configuration Over/under service on the Stobie Pole; or An existing service pit / pillar 100A over under on a pole 200A over/under service on pole; or 200A isolators on pole, or 200A service pit / pillar 250A service pit / pillar with agreement of SA Power Networks Manager Overhead transformer Padmount transformer Service fuse enclosure Service pit / pillar Alternate Connection Configuration Overhead 25mm 2 Aluminium ABC service; or new service pit. None 7.1.3 Connections to Services add last paragraph Add last paragraph Refer to Table 7.3 and Table 7.4. Issue 3 September 2012 Page 16 of 55

Replace Table 7.4 Padmount Transformer i) 150 kva 300 kva 500 kva ii) 750 kva 1.0 MVA iii) 1.5 MVA and 2.0 MVA Table 7.4 - Maximum Size of Customer Cables. See Notes next page. 7.2.2.3 Service Pits / Pillars Replace paragraph 4 Copper conductors suitable for loads no greater than 700 amps. Maximum size conductor per phase single fuse disconnect - 2x300mm² Cu or 1x500mm² Cu. Copper conductors suitable for loads no greater than 1000 amps and 1400 amps. Maximum size conductor per phase 4x500mm² Cu 1250A Fuse Disconnect. Copper conductors suitable for loads no greater than 3000 amps. Maximum size conductor per phase - 6x500mm² Cu. Where consumer s mains enter into an SA Power Networks service pit / pillar, they must enter through the aperture or ducting system provided. 7.3.1 Overhead Lines Replace 3 rd dot point a raiser bracket typically fixed to the fascia and wall. 7.3.6.6 Point of Attachment Location Replace 3 rd dot point Must be located to limit the length of service line over the property to 20m refer Appendix A1.9. 7.3.6.9 Point of Attachment on Customer Support Poles Replace paragraphs 3 & 4 The Customers Support Pole must comply with the requirements of AS/NZS 3000 and an Electrical Certificate of Compliance, validly completed is required before a connection will be made. Refer to Appendix A1.3. The point of attachment on a customer support pole shall be located to achieve or exceed the required clearances and all other requirements of these Rules. Refer to Appendix A1.3. Issue 3 September 2012 Page 17 of 55

7.4.5.2 Services Greater than 500kVA - Circuit Breakers Replace paragraphs 2 & 3 The main switchboard shall be located within 10m of the connection point but not within the SA Power Networks easements (including statutory easements). Refer also to 8.8.6 for unsuitable metering locations. (Note: The main switchboard cannot be within 3m of the transformer.) 7.4.6.1 Underground Supply Replace paragraph 5 All locks required to be operated to gain access to the service protection devices will be the type approved by SA Power Networks. Refer to section 4.7. 7.4.6.3.2 Customer s Switchboard and Associated Equipment mounted on SA Power Networks Poles Replace paragraph 1 Customer s equipment, other than consumers mains, cannot be mounted on SA Power Networks poles. SA Power Networks Manager Network Standards & Performance may provide exemption to other utilities or public authorities for specific applications. 7.7.1 General Replace paragraph 2 In accordance with clause 6.2.3, SA Power Networks reserves the right to determine the location of the Consumer s Terminals, and the method of termination of consumer s mains where they are not specified by these Rules. The type of consumer s mains connected to SA Power Networks equipment must conform to clause 7.1.3. Issue 3 September 2012 Page 18 of 55

7.7.1.1 Exclusion Zone Replace entire clause. Figure 2 now renamed Figure 7.2 Consumer mains are NOT allowed to enter into or be installed externally on a building anywhere within the exclusion zone as indicated in figure 7.2 below. The exclusion zone applies to all installations where there is a gas meter box below, the electricity meter box or service fuse enclosure. Figure 7.2 Underground Consumer s Mains Entry Issue 3 September 2012 Page 19 of 55

7.7.1.2 Unprotected Consumer Mains Add new paragraph 3 Where supply is obtained direct from a distribution transformer with no low voltage protection at the connection point, then the main switchboard must be located in a continuously accessible exterior location, or where the transformer is inside the building then the main switch board must be in a room immediately adjacent to or directly above the transformer room and both the transformer and main switch board be accessible at all times to SA Power Networks Personnel. 7.7.2 Size of Consumer s Mains Replace paragraph 3 Where the connection point for any installation that is unprotected by an SA Power Networks service fuse at the connection point, then to allow for various SA Power Networks transformers, LV mains sizes and LV fuse ratings the minimum size consumer mains shall be 16mm 2 copper cable. 7.8.8 Unmetered Supplies Replace paragraph 1and dot points 1 & 5 of paragraph 2 Suitable applications and additional requirements for unmetered supplies are described in SA Power Networks Network Tariff and Negotiated Services Manual. The following general conditions apply to new or altered unmetered supplies: An appropriate load limiting circuit breaker with provision for SA Power Networks security seal is to be used as specified in clause 4.3.5 of the Network Tariff and Negotiated Services Manual. Socket outlets are NOT permitted in any unmetered installation other than for an approved Type-7 load. Issue 3 September 2012 Page 20 of 55

Section 8- Customer s Installation & LV Metering Facilities 8.8.1 General Replace paragraph 5 and dot point 2 of paragraph 6. Metering equipment is required to be installed outside hazardous areas defined in AS/NZS 60079.10:2004. installed in a suitable vandal resistant lockable enclosure which is located in a externally accessible part of the fence, which does not protrude outside the building line; or 8.8.3 Multiple Occupancy Electrical Installations Replace paragraphs 2-6 Metering equipment shall unless otherwise agreed with the relevant SA Power Networks Manager be located: to comply with this clause and clause 8.9 and in a position to which all occupants and SA Power Networks have common right of access; within common property provided for the purpose or if no common property then in accordance with the Community Title Act 1996 and with ongoing unhindered access for all Community Title owners and in accordance with all other requirement of these rules; and be grouped at the main switchboard for the electrical installation; or at the origin of each tenancy sub-main and be grouped at a number of distribution switchboard locations as determined by engineering considerations of supply. These conditions include voltage drop as, for example, in the case of multi storey buildings etc. In all cases, an additional group meter position shall not be used unless more than 18 meters would otherwise be required to be grouped in a single board. The group meter position may be in a room, cupboard or alcove in a common area set aside for the purpose which complies with clause 8.8 and not within a single occupancy. The door/s of rooms and enclosures housing metering equipment shall be labelled Electricity Meters. If the door is to be locked it shall be locked with a lock in accordance with clause 8.9.2. Issue 3 September 2012 Page 21 of 55

8.9.1 General Replace last paragraph 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 their expense. 8.11.5 Meter Wiring Replace paragraph 3 For whole current metering (i.e. less than 100A maximum demand) the cables shall be multi strand soft drawn copper conductors with PVC insulation of the following type: 8.12.1 General Add new dot point 8.12.2.3 Clearances Replace dot point 1 8.12.3.2 Types & Supply Replace entire clause load carrying conductors shall not be less than 6mm2 or greater than 25mm2; 6mm2 for metering neutral conductors; and not less than 18 strands for 25mm2 conductors. NATA approved test results are to be provided for the revenue metering CTs. The lower edge of the meter panel space shall be not less than 0.7m or greater than 2.0m above the floor or ground level. The customer must supply the current transformers of a type that are specified below and meeting the requirements of Appendix A4.2. The type of current transformer shall be selected for the load current range in Table 8.5 that includes the maximum demand applicable to the metering installation. The sizes of metering current transformers used may vary and advice should be obtained from the Responsible Officer regarding the type to be used in any specific project. Those in common use are: Issue 3 September 2012 Page 22 of 55

8.12.3.3 Compliance Add new clause Current transformers shall comply with AS 60044.1, Current Transformers for Measurement and Protection. The metering transformers shall be solely for metering revenue purposes. 8.12.7 Current Transformer Meter Voltage and Current Wiring Replace paragraph CT Meter Voltage and Current Wiring shall be connected in accordance with Appendix A1.7 Sht. 3 and identified with numbered or colour coded cores for the entire length of the conductors as per Tables 8.6 and 8.7. Issue 3 September 2012 Page 23 of 55

Section 9- High Voltage Electrical Installations 9.1 Scope Replace paragraph 3 and add new last paragraph HV supply at 3.3kV or 6.6kV is no longer available. In general, alterations to existing installations with supplies at these voltages must comply with these Rules. However technical characteristics will differ from those outlined in Table 9.1 in clause 9.4 below. Further information will be provided by the SA Power Networks Manager. In order for Market Participants to meet their maintenance requirements and the requirements of the National Electricity Rules, safe access to the High Voltage Instrument Transformers is necessary. Unless the instrument transformers can be electrically isolated from the installation, isolation of the customers High Voltage installation is required at intervals prescribed by the appropriate Market Participant. 9.4 Preliminary Information Replace entire clause The Customer should provide at the earliest possible notice (preferably 18 months) to their selected Retailer and SA Power Networks of the intention to plan for a high voltage supply. The following preliminary information shall be provided to SA Power Networks: A single line diagram of the proposed installation. (Refer Figure 9.1 at the end of this section.) An overall site plan showing the location of the HV equipment; The preferred Point Of Supply (new installation); The anticipated maximum demand (MVA) required for the installation; Any proposed on-site generation; Any disturbing loads (e.g. large motors, arc furnaces, etc); and The HV metering design arrangements. The Customer must obtain formal approval from the relevant SA Power Networks manager. Negotiations for supply should precede detailed design work, placement of orders for equipment and letting of contracts to avoid loss to the Customer arising from designs or equipment being found by the Distributor to be unsuitable for connection to the supply system. The characteristics of the 11kV distribution network are detailed below: Issue 3 September 2012 Page 24 of 55

9.13.2.1 Panel Replace paragraph 3 The minimum size meter panel for a single HV metering installation shall be in accordance with A4.1.5 9.13.3.1 Compliance Replace first 3 paragraphs Voltage transformers shall comply with AS 60044.2, Voltage Transformers for Measurement and Protection, and the current transformers shall comply with AS 60044.1, Current Transformers for Measurement and Protection. The transformers shall meet the performance requirements detailed in clause 9.4 (Table 9.1). For voltages other than 11kV consult the relevant SA Power Networks Manager. The metering transformers shall be solely for metering revenue purposes. The metering transformers are to be mounted within the Customer s high voltage switchgear and shall be acceptable to SA Power Networks. 9.13.3.2 Transformer Layout Replace dot point 1 and delete dot point 2 9.13.3.3 Secondary Wiring Replace dot point 5 The metering transformers must be mounted within a HV chamber which is able to be placed under the SA Power Networks or the Meter Providers Security Seals. Secondary wiring from the marshalling point to the meter position shall be wired, supplied and installed by the customer. The wiring shall be a maximum of 15m in length with a standard 10 core 2.5mm2 wiring loom, labelled in accordance with clause 8.12.7. Issue 3 September 2012 Page 25 of 55

Appendix 1-Construction Drawings A1.1 2 Wire Overhead Services Replace existing drawing Issue 3 September 2012 Page 26 of 55

A1.2 3 & 4 Wire Overhead Services Replace existing drawing Issue 3 September 2012 Page 27 of 55

A1.3 SA Power Networks Guide for Customer s Support Poles Replace existing drawing - New Note 5 Issue 3 September 2012 Page 28 of 55

A1.4 Over/Under Services Replace existing drawing Issue 3 September 2012 Page 29 of 55

A1.6 Underground Services Replace existing drawing Issue 3 September 2012 Page 30 of 55

A1.7 Typical CT Metering A1.7 Sheet 1 - Current Transformer and Busbar Wiring Diagram Replace existing drawing Issue 3 September 2012 Page 31 of 55

A1.7 Sheet 3 - Meter Panel Wiring Diagram Replace existing drawing Issue 3 September 2012 Page 32 of 55

A1.8 Typical Metering Panel Arrangements & Wiring Layout A1.8 Sheet 1- Whole Current Metering-Single Domestic Customer Replace existing drawing Issue 3 September 2012 Page 33 of 55

A1.8 Sheet 5 - Current Transformer Metering-Multiple Storey Non- Domestic (>100A) Replace existing drawing Issue 3 September 2012 Page 34 of 55

A1.9 Service Poles Replace existing drawing Issue 3 September 2012 Page 35 of 55

Appendix 2- Notice to Electrical Workers A2.4.3.3 Application Replace paragraph 2 A2.4.3.4. Where a customer seeks to upgrade their supply then the breakdown box shall be replaced with a group metering enclosure. For the sake of clarity this means where; Consumers mains are upgraded for increased current or phase requirements; Submains are upgraded for increased current or phase requirements; Additional tenancy is added; Breakdown box is no longer serviceable; and Breakdown box requires relocation. In all circumstances the property title arrangement are to be confirmed with the property owners as this may affect the service arrangements. Examples Replace Example 3 & 4 3. Three shops built to all boundaries. One tenant seeks an upgrade to three phase. Breakdown box to be replaced with group metering enclosure in common area. 4. Three shops, one tenancy sub-main has burnt out fuse base. They can Replace fuse base (same rating only); or Replace fuse base with circuit breaker (same rating only); or Breakdown box to be replaced with group metering enclosure in common area. Issue 3 September 2012 Page 36 of 55

A4.3.1. Scope: Add new 1 st paragraph A4.3.3.2. Appendix 4- Low Voltage Metering The intention of the subsequent clauses is to provide permanent unimpeded and safe ongoing access to the meter enclosure for SA Power Networks personnel. Principal Frontage Area: Replace entire clause This clause is to be read in conjunction with clause A4.3.6 which provides application examples for meter box locations which must be located within the principal frontage area. (a.) General: The principal frontage area is an area on the real property that is enclosed by the boundaries consisting of the principal frontage property boundary, the wall of the building facing the principal frontage property boundary and extending around the comer of the building to 1.5 metres a fence, wall or obstruction whichever is the lesser and extending parallel with the principal frontage property boundary to the side boundaries of the property or other obstruction (e.g. Fence or wall) enclosing the area entered when entry is via the main access located in the principal frontage boundary to the property. Excluding areas that could be enclosed by walls, fences, doors and gates now or in the future and covered areas where a vehicle can be parked. (b.) Multi Face Dwelling: Where the dwelling has multiple faces or where the facing wall is not parallel to the principal frontage boundary then the portions of the dwelling which are closer to the principal frontage property boundary than the dwellings main entrance are to be considered as the facing wall for the purpose of defining the principal frontage area. Refer to Appendix A4.3.5.1; Figure (2) & (3). (c.) Dual Fronted Properties: In these properties, the principal frontage area will be considered to be the face of the dwelling that has been designed as the main public access. (i.e. the entry point at which a visitor would access the property). Issue 3 September 2012 Page 37 of 55

A4.3.3.3. Refer to Appendix A4.3.5.1; Figures (8) & (9). The alternative meterbox location shown in Figure (8) is subject to the following conditions: There remains unrestricted access to the metering/service fuse enclosure; and The metering/service fuse enclosure is located on the roadway side of any existing or proposed access gate; and That the metering/service fuse enclosure is located in a position within 1.5m from the building line adjacent to the road reserve boundary. The intention of this clause is to provide unimpeded access to the meter enclosure for SA Power Networks personnel. Principal Frontage Property Boundary: Replace paragraph Is that boundary between the real property and the gazetted road. However, where a property has boundaries with two (2) or more gazetted roads the principal frontage boundary will be that which provides primary public / personal access. A4.3.5. Application Examples: Replace complete clause of all Application Examples Legend Issue 3 September 2012 Page 38 of 55

A4.3.5.1. Single Residential Conventional block, meter enclosure located in principle frontage area. Figure (1) Figure (2) Issue 3 September 2012 Page 39 of 55

Figure (3) Figure (4) Issue 3 September 2012 Page 40 of 55

Figure (5) Figure (6) Issue 3 September 2012 Page 41 of 55

Notes: This diagram (Figure 7) illustrates two Torrens Titled properties; and For Community Titled illustration, refer to A4.3.5.3 Multiple Residential. Figure (7) Issue 3 September 2012 Page 42 of 55

Dual Fronted Properties: Figure (8): Torrens Titles Allotments Main Public Access via reserve Figure (9): Torrens Titled Allotments main Public Access via Lane Issue 3 September 2012 Page 43 of 55

A4.3.5.2. Single Residential Wall on Boundary (a.) High security perimeter fence, meter enclosure built into perimeter fence or low security air lock. Figure (1) (b.) The design and structure of the building are such that the meter box cannot be located within the 1.5 metres of the corner of the building. (E.g. where windows are installed within 1.5 metres of the comer of the building). Figure (2) Issue 3 September 2012 Page 44 of 55

(c.) Non lockable personal access gate or gate locked with SA Power Networks Master Key System. Figure (3) (d.) The building is constructed up to the 'Principal Frontage Property Boundary' and access is available along a side walkway on the real property. The meter position should be accessible to the same extent as the primary dwelling entrance i.e. between property entry point and the front door. The building is built to all boundaries thereby eliminating any access to the meter box except through a low security area. Figure (4) Issue 3 September 2012 Page 45 of 55

A4.3.5.3. Multiple Residential (a.) Group meter position for two units. Figure (1) (b.) Many units or homes with single supply point. E.g. Community Titled development. Figure (2) Issue 3 September 2012 Page 46 of 55

(c.) Many units or homes with multiple supply points. E.g. Community Titled development. Figure (3) (d.) High Density Single Supply. Figure (4) Issue 3 September 2012 Page 47 of 55

A4.3.5.4. (e.) Multistorey. Meter box may be permitted in a common low security garage provided the clearances are maintained and any vehicle cannot be parked within the clearance zone- access via SA Power Networks Master Key System. Figure (5) Single Non-Residential First preference is as per residential installations i.e. exterior location. Where the premises are built to the boundaries and the premises will be accessible during normal business hours (e.g. shop) an interior location is acceptable subject to safe and convenient access being maintained. If the required access cannot be maintained the customer must arrange for relocation of the metering enclosure to a compliant location at their expense. Figure (1) Issue 3 September 2012 Page 48 of 55

A4.3.5.5. Multiple Non-Residential (a.) Single Point Supply. Figure (1) (b.) Multiple Supply Points. E.g.: Where units have Torrens Title arrangements. Figure (2) Issue 3 September 2012 Page 49 of 55

(c.) High Density Single Supply. (d.) Multistorey. Figure (3) Figure (4) Issue 3 September 2012 Page 50 of 55

Appendix 5- SA Power Networks Service Fuse - Time/Current Characteristics A5.1 Time/Current Curves for Typical SA Power Networks Service Fuse A5.1 Sheet 1 For Service Fuse Type - ME & MF Replace All Sheets Issue 3 September 2012 Page 51 of 55

A5.1 Sheet 2 For Service Fuse Type J Issue 3 September 2012 Page 52 of 55

A5.1 Sheet 3 For Service Fuse Type - NH Size 2 Issue 3 September 2012 Page 53 of 55

A5.1 Sheet 4 For Service Fuse Type - NH Size 3 Issue 3 September 2012 Page 54 of 55

A5.1 Sheet 5 For Service Fuse Type - NH Size 4A Issue 3 September 2012 Page 55 of 55