FROM B.C. HYDRO ENCLOSURE (SEE NOTE 4) RIGID CONDUITS (SEE NOTE 8) ALTERNATIVE TO LOAD BARRIER (SEE NOTE 7) SERVICE ENTRANCE ENCLOSURE

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3 FROM B.C. HYDRO FOR OVERHEAD INSTALLATION ONLY DUCT SEAL (SEE NOTE 8) PULL BOX (SEE NOTE 5) PULL BOX (SEE NOTE 5) FROM B.C. HYDRO 7- REVISED NOTES & TABLES ON PAGES,3,4,5,.MARCH AJ - GENERAL REV.MA 08 MK BARRIER (SEE NOTE 7) CONDUCTORS (SEE NOTES & ) LINE LUGS (SEE NOTE ) SERVICE ENTRANCE LINE ENCLOSURE LINE GROUNDED LOAD (SEE NOTE 4) LOAD NEUTRAL LUGS (SEE NOTE ) ALTERNATIVE ALTERNATIVE ALTERNATIVE (SEE NOTE ) RIGID CONDUITS (SEE NOTE 8) B.C. HYDRO ENTRY AT THE TOP B.C. HYDRO ENTRY ON THE SIDE (LEFT HAND ENTRY SHOWN) PULL BOX (SEE NOTE 5) ALTERNATIVE ALTERNATIVE BARRIER (SEE NOTE 7) LINE LOAD FROM B.C. HYDRO SERVICE ENTRANCE ENCLOSURE SERVICE ENTRANCE ENCLOSURE WITH CIRCUIT LINE BREAKER LOAD CONDUCTORS (SEE NOTES & ) PULL BOX (SEE ALTERNATIVE NOTE 5) RIGID CONDUITS (SEE NOTE 8) FROM B.C. HYDRO B.C. HYDRO ENTRY AT THE BOTTOM ALTERNATE B.C. HYDRO ENTRY AT THE BOTTOM (LEFT HAND ENTRY SHOWN) FOR CIRCUIT BREAKERS ONLY DRAFTER: BB ORIGINAL ISSUE DATE: FEBRUARY 98 PAGE OF THREE PHASE TO 00A,08V AND 00V SERVICE ENTRANCE ENCLOSURE DETAILS ES53 S-0.0 7

4 NOTES:. Position, quantity and type of line lugs and neutral lug in the service entrance equipment may vary with manufacturer and service size. There must be one lug for each service conductor.. Under no circumstances shall load conductors cross or otherwise interfere with the incoming BC Hydro conductors. 3. Service entrance equipment shall be adequately rated for the available fault levels. Consult district or divisional engineering about the available fault levels. 4. Service entrance enclosure shall facilitate a fusible switch enclosure or a circuit breaker. For single service 00 A or less at 0/08 V, service entrance enclosure shall be the meter base, provided that fault level is less than 0kA. Above 0kA, over current protection device must be installed ahead of meter base. 5. Some services 00 A or less with top entry (see note 3.5b on ES54 S-0.0) or with alternate bottom entry for circuit breaker may not require a pullbox. See drawings ES54 S-0.0 to S-0. for details.. Minimum bending radius for any conductor shall be in accordance with drawing ES53 U Barrier between the pullbox and service entrance enclosure may not exist or may be slotted to allow conductors to be broken out of the bundle in the pullbox. For steel barrier, conductors must remain in the bundle when passing through barrier to prevent eddy currents. If conductors must be broken out of the bundle chase nipples made of aluminum must be used. 8. All service ducts shall be rigid type conduits with sealed factory bends and fittings sealed thoroughly with duct seal (Stock No ) at the point where BC Hydro conductors enter the pullbox. 9. This drawing is based upon customer service instructions (CSIs) S0- and S All 0/08V services larger than 800A and 347/00V services larger than 00A shall be served from padmount transformers only.. In the event that there is a conflict between Section "S" of ES53 Standards and the Requirements for Secondary Voltage Revenue Metering 700V and less, the latter takes precedence for Metering Applications only. DRAFTER: DM ORIGINAL ISSUE DATE: DECEMBER 989 THREE PHASE TO 00A,08V AND 00V SERVICE ENTRANCE INSTALLATION NOTES PAGE OF ES53 S-0.0 7

5 LIST OF CONDUCTOR SIZES AND STOCK NUMBERS TO SINGLE COMMERCIAL AND INDUSTRIAL CUSTOMERS ON PRIVATE PROPERTY, WITH 80% RATED MAIN BREAKER 3 Phase (Quadraplex) Customer Main Aluminum Copper Switch/Breaker No. of Bundles Stock Number No. of Bundles Stock Number Up to 5A # AWG A 400A #4/0 AWG 500 kcm #/0 AWG 350 kcm A 800A 350 kcm 500 kcm #4/0 AWG 350 kcm A kcm kcm A kcm kcm NOTES: The peak demand was assumed to be 80% of the rating of the main service entrance breaker, and the load factor 0.8 (or 80%), as per note. Cable ampacity has been calculated using a Load Factor (LF) of 0.8 and the corresponding multiplying factors, where LF is defined based on a 4 hour cycle as per ES53 U-0.0. Cable ampacities in conduits are as per BCH standard ES53 U Cable ampacities in vertical runs at the terminal pole are based on the following assumptions: - Ambient air temperature of 30^C - Wind speed of ft/s - Parallel runs use large cable guards and the two sets of cables are strapped to the pole individually, so that they are not in contact. 5. The maximum number of U/G ducts is 4 and the maximum number of parallel runs at the terminal pole is.. The maximum service size supplied from a bank of polemounted transformers is 800A, due to the limitation of runs at the terminal pole. DRAFTER: DM ORIGINAL ISSUE DATE: FEBRUARY 007 THREE PHASE TO 00A,08V AND 00V CONDUCTOR SIZES FOR 80% RATED CUSTOMER SERVICE BREAKER PAGE OF 3 ES53 S

6 LIST OF CONDUCTOR SIZES AND STOCK NUMBERS TO SINGLE COMMERCIAL AND INDUSTRIAL CUSTOMERS ON PRIVATE PROPERTY, WITH 00% RATED MAIN BREAKER 3 Phase (Quadruplex) Customer Main Aluminum Copper Switch/Breaker No. of Bundles Stock Number No. of Bundles Stock Number Up to 5A 00A 400A 00A 800A 00A 00A 3 #4/0 AWG 500 kcm 500 kcm 750 kcm 750 kcm #/0 AWG kcm 500 kcm 500 kcm kcm kcm (Note 5) NOTES: The peak demand was assumed to be 00% of the rating of the main service entrance breaker, and the load factor 0.8 (or 80%), as per note. Cable ampacity has been calculated using a Load Factor (LF) of 0.8 and the corresponding multiplying factors, where LF is defined based on a 4 hour cycle as per ES53 U-0.0. Cable ampacities in conduits are as per BCH standard ES53 U Cable ampacities in vertical runs at the terminal pole are based on the following assumptions: - Ambient air temperature of 30^C - Wind speed of ft/s - Parallel runs use large cable guards and the two sets of cables are strapped to the pole individually, so that they are not in contact. The following additional requirements apply to 00A services with 00% rated main service breaker: - The customer must provide to BCH Design Office the daily load profile; - The maximum load must not exceed 00A; - The 4 hours average load must not exceed 80A (0.8 load factor); - The maximum load of 00A is allowed for not more than 8 hours within any 4 hours period. If the customer cannot demonstrate compliance with all the above requirements, then the service entrance breaker will be required to trip at 80A, the equivalent of an 80% rated breaker.. The maximum number of U/G ducts is 4 and the maximum number of parallel runs at the terminal pole is. 7. The maximum service size supplied from a bank of pole mounted transformers is as per note 0 of ES53 S-0.0. DRAFTER: DM ORIGINAL ISSUE DATE: FEBRUARY 007 THREE PHASE TO 00A,08V AND 00V CONDUCTOR SIZES FOR 00% RATED CUSTOMER SERVICE BREAKER PAGE OF 4 ES53 S

7 RECOMMENDED SIZE OF TRANSFORMERS TO SINGLE COMMERCIAL AND INDUSTRIAL CUSTOMERS ON PRIVATE PROPERTY Customer Main Switch/ Breaker O/H Bank kva High (80%) Med (0%) PMT kva High (80%) Med (0%) Up to 5A 3 x 50 3 x A 3 x 50 3 x A 3 x 00 3 x A 3 x 7** 3 x 7** A 750* A 000* 750* 00A 500* 000* NOTES:. The following load categories are covered in the transformer selection tables: High- average 4 hours load could reach 80% of the peak load, as defined at. Medium- average 4 hours load could reach 0% of the peak load, as defined at.. The term "peak load" referred to in note, is 80% of the main breaker rating for 80% rated breakers and 00% of the main breaker rating for 00% rated breakers. 3. The load categories are for guidance only. A designer must assess the load and size the transformer accordingly. 4. Services with 00% rated main service breaker are classified as "High" load. 5. BCH supplied transformers are suitable for 0% of the nameplate kva for a maximum duration of 8 hours within a 4 hour period, with a preload of 80% and a maximum temperature rise of 5^C over 30^C ambient. The maximum short-time overload is 30% of the nameplate KVA for a maximum total duration of one hour within a 4 hour period. * 750kVA, 000kVA and 500kVA units are available only with a primary voltage of 4,940V. ** Transformer banks consisting of 7kVA units shall be platform mounted only. The preference is to install three phase pad mounted units instead. DRAFTER: DM ORIGINAL ISSUE DATE: FEBRUARY 007 PAGE OF THREE PHASE TO 00A,347V/00V TRANSFORMER SIZES FOR SINGLE SERVICE 5 ES53 S

8 RECOMMENDED SIZE OF TRANSFORMERS TO SINGLE COMMERCIAL AND INDUSTRIAL CUSTOMERS ON PRIVATE PROPERTY Customer Main Switch/ Breaker O/H Bank kva PMT kva High (80%) Med (0%) High (80%) Med (0%) Up to 5A 00A 400A 00A 800A 00A 00A 3 x 5 3 x x 5 3 x x 50 3 x x 75 3 x x 75 3 x NOTES:. The following load categories are covered in the transformer selection tables: High- average 4 hours load could reach 80% of the peak load, as defined at. Medium- average 4 hours load could reach 0% of the peak load, as defined at.. The term "peak load", referred to in note, is 80% of the main breaker rating for 80% rated breakers and 00% of the main breaker rating for 00% rated breakers. 3. The load categories are for guidance only. A designer must assess the load and size the transformer accordingly. 4. Services with 00% rated main service breaker are classified as "High" load. 5. BCH supplied transformers are suitable for 0% of the nameplate kva for a maximum duration of 8 hours within a 4 hour period, with a preload of 80% and a maximum temperature rise of 5^C over 30^C ambient. The maximum short-time overload is 30% of the nameplate kva for a maximum total duration of one hour within a 4 hour period. DRAFTER: DM ORIGINAL ISSUE DATE: FEBRUARY 007 PAGE OF THREE PHASE TO 00A,0/08V TRANSFORMER SIZES FOR SINGLE SERVICE ES53 S-0.0 7

9 GROUND ROD FOR CONNECTOR INSTALLATION DETAILS - QUANTITY CHANGE PAGE.MARCH AJ SEE DRAWING NO. ES53 N-0 x 4" DUCTS TO T.P. T0 NEUTRAL ONLY 3 4 OR SECTION A-A (ONLY ONE PHASE SHOWN) 5 x 4" DUCTS RIGID, SEALED TO CUSTOMER SERVICE 4- TITLE CHANGE.FEB. 07 MK 5- TITLE REVISED.MA 08 MK FOR INSTALLATION & STOCK NO. OF CABLE GUARDS, COVERS AND METHOD OF ATTACHMENT OF CABLES, SEE SECTION-M IN THIS STANDARD BOOK A FOR PILASTER INSTALLATION DETAILS SEE DRAWING NO. ES54 S-0 IN THE UNDER- GROUND CIVIL STANDARDS BOOK SECTIONAL ELEVATION FOR DETAILS OF LID OPTIONS SEE DRAWING NO. ES54 B-0 IN THE UNDERGROUND CIVIL STANDARDS BOOK A T0 NEUTRAL ONLY DRAFTER: BB ORIGINAL ISSUE DATE: OCTOBER 98 PAGE OF 00% RATED 800A MAX. 3 PHASE POLE DIP WIRING AND INSTALLATION DETAILS ES53 S-0.0

10 # AWG GROUND CONDUCTOR 3 or 4 TO NEUTRAL ONLY TO TERMINAL POLE TO SERVICE 5 SERVICE BOX ONE-LINE DIAGRAM OF CONNECTIONS BILL OF MATERIAL Item Quantity Description Stock No. or 3 4 per phase per phase per phase Cable, 4/C - 500kcm - Cu Cable, 4/C - 500kcm - Cu Cable, 4/C - 750kcm - Al Insulated Secondary Multi-connector, 000A, 5 Terminal Insulated Secondary Multi-connector, 000A, Terminal 33 Concrete Box as required Box Riser M/H Lid Riser or 33 Lid Collar NOTES:.. For stock numbers of insulated secondary multi-connectors accessories see drawing ES53 Z4-08. The highest allowed load factor for this type of installation is 0.4 (40%). Services supplying customers with higher load factors cannot be provided by using this standard. 3. The selected cable sizes are suitable for services with 00% rated main breakers. ES54 S-0 ES54 B-05 ES53 Z4-08 ES53 N3-0 ES53 M Sect. ES53 M3-0 3 Phase Dip Service, 00A, Civil Details 33 S.B. - Civil Details Multi-connector - 00A Compression Service Box Capacities Terminal Pole Structures Multi-connector - 00A Compression REFERENCE DRAWINGS DRAFTER: DM ORIGINAL ISSUE DATE: OCTOBER 98 00% RATED 800A MAX. 3 PHASE POLE DIP WIRING AND INSTALLATION DETAILS PAGE OF ES53 S-0.0

Pretest Module 24 Three-phase Service Entrance

Pretest Module 24 Three-phase Service Entrance 1. What is the most widely used three-phase service entrance system? 2. What are the three most common voltage combinations for three-phase, four-wire systems?