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4.1 General introduction

  • An underground secondary service is a service that's fed from an existing transformer, new transformer, or pedestal installed on City of Edmonton property.
  • Typical installations include homes and small to medium commercial applications.
  • Please see below for a summary of your responsibilities as the customer and the responsibilities of EPCOR Distribution and Transmission Inc. (EDTI).
  • If you decide that you require an underground secondary service, please complete the Commercial or Single-Family Residential Application Form.

  • See the Additional Information Section (9.0) to learn about such topics as temporary power, splicing, operations, equipment relocation, and pre-inspection checklists.
  • The information is divided into sections to make it easier for you to find, but EDTI strongly suggests that you read all the information before starting.
  • If there are any differences between this information and EDTI's Terms and Conditions, the Terms and Conditions will govern. In addition, regulations contained in the Canadian Electrical Code, Alberta Electrical Utility Code, Alberta Safety Codes Act, and Alberta Occupational Health and Safety Act must be followed.
  • The customer must comply with the clearances set out in the Canadian Electrical code for required vertical clearances when crossing other utilities.

Table 1

​​Customer's Responsibilities

  • Complete civil work on private property. This typically includes all trenching, ducting, pull boxes, and grounding.
  • Supply and install secondary cable.
  • Install Current Transformers and Potential Transformers.

Note: The customer owns and maintains all secondary works on private property.

​EDTI's Responsibilities

  • Complete all work on public property.
  • Terminate all secondary conductors at the transformer or pedestal.
  • Supply Current Transformers and Potential Transformers.
  • Supply and install revenue metering equipment.

Note: EDTI owns and maintains all revenue metering equipment.

Service Connection Point (Service Entry Point)

Property line.

​Point of Service Termination (Electrical Connection Point)

Transformer or pedestal.

4.2 Standard Supply Voltages
  • To see the standard voltages available from EDTI for this type of service, please see the Select the Service Type That Works for You (1.4) Section.
  • Maximum service limits apply to services within our 15 kV and 25 kV service areas. For any new or increased services in the 5 kV distribution area, contact us for limits. Refer to Drawing 29 for the primary voltage in your area, and contact us for confirmation.
  • New or increased 240 V, 3-phase, 3-wire services will only be supplied if approved by EDTI Customer Engineering Services.
  • Existing 240 V, 3-phase, 3-wire services will continue to be maintained.
  • 240 V, 3-phase, 3-wire services are not available from padmounted transformers.
  • 1-phase equipment cannot be connected to 240 V, 3-phase, 3-wire services.
  • Two or more services of the same voltage will not be supplied to the same premises. An example would be a 120/240 V, 1-phase, 3-wire service and a 120/208 V, 3-phase, 4-wire service.
4.3 Permits and Inspections

As a customer, you or your contractors are responsible for:

  • Obtaining all permits, certificates, licences, inspections, reports, and other authorizations necessary for installing and operating the service connection. EDTI is not required to start or continue operation of a service connection unless the customer has complied with the licensing requirements of EDTI and all other authorities.
  • Submitting an electronic copy of the electrical wiring permit, civil electrical inspection (if required), and final electrical inspection report to EDTI Customer Engineering Services.
  • Ensuring that an Electrical Safety Codes Officer inspects all internal wiring before it's concealed. All transformer and switching cubicles, ground grids, underground wiring, and ducts must be inspected before the trench is backfilled. Contact the City of Edmonton to arrange for inspections. A service connection will not be energized unless you have received  inspection approval.
  • Completing utility searches on private property and notifying Alberta One-Call before any work is done.
4.4 Service Connection Agreement
  • EDTI requires the customer to sign the Customer Acceptance portion of the estimate letter as confirmation of intent to proceed with construction. This is required before EDTI finalizes the design and issues work orders.
  • EDTI may require the customer to sign a Construction Commitment Agreement, Electric Service Agreement, and/or Interconnection Operating and Maintenance Agreement.
  • The customer may be required to make a capital contribution toward the cost of materials and equipment installed on City of Edmonton property or the customer's property.
4.5 Drawing Requirements
  • EDTI Customer Engineering Services reserves the right of final approval for the location of facilities before EDTI will grant construction approval.
  • New connection construction cannot start until EDTI has approved all drawings.
  • A customer requesting an underground secondary service must submit a copy of the following:
  • Drawings must be in electronic format and follow accepted drafting standards as indicated in this guide.
  • Drawings will become part of EDTI's record system and must be submitted in PDF and AutoCAD or MicroStation format.
  • The following information must be included on these plans:
    • All legal property lines
    • Streets, avenues, and any other public thoroughfare abutting the property
    • Locations of planned and existing buildings
    • Size and location of secondary conductors on the line (source) side of the meter
    • Size and location of pedestals
    • Direction of door openings for padmount transformers and cubicles
    • Location and size of the main distribution panel within the building, including voltage, amperage, phase, wire size, temperature rating (i.e., 75 or 90 degree), and type
    • A detailed drawing of the electrical room layout
    • Easements and rights-of-way located on the customer's property
    • Location and description of all other utilities crossing or located within 3.0 m of proposed power facilities and conductors
    • Drawings at a scale that will maintain the readability of multiple conductors, which can be submitted as multiple sheets, if necessary to meet the readability criteria, as long as each sheet is self-contained
    • Electrical permit number and legal address
    • Title, block, border, scale, and legend

Please note that all equipment and conductor locations on the drawing are to be dimensioned from the building and property lines, and given real-world coordinates. Curb lines may also be included.

EDTI Customer Engineering Services will review and accept drawings and the scope of work.

4.6 Horizontal Clearance to Other Utilities

The following horizontal clearances to other utilities from underground service lines and equipment, including padmount transformers, switching cubicles, guardrails, and ground grids, must be maintained:

Commercial Installations

  • Secondary Conductors

    • 2.0 metres to all valves, hydrants, catch basins, manholes, vaults, sanitary and storm sewer lines, septic tanks, fields, and Minnesota mounds. The secondary cable cannot cross through septic fields and Minnesota mounds.
    • 1.8 m to all water lines and cc valves.
    • 1.0 m to all gas lines.

Residential Installations
(Single-family and Multi-family Units)

  • Secondary Conductors

    • 2.0 metres to hydrants, catch basins, manholes, septic tanks, fields, and Minnesota mounds. Secondary cables cannot cross through septic fields or Minnesota mounds.
    • 2.0 m to sanitary and storm sewer lines.
    • 1.0 m to water lines and cc valves.
    • 1.0 m to gas lines when in separate trenches. On residential properties where a four-party joint-use trench is used, there must be a minimum 0.3 m separation, and a marker tape must be installed 0.5 m above the service cable.
4.7 Service Entry Point
  • It is critical that you contact EDTI Customer Engineering Services for your site-specific service entry point (the point where EDTI's infrastructure meets your property line) before beginning construction. The service entry point can differ, due to a number of circumstances.
4.8 Electrical Room
  • If service capacity exceeds 200 A, service equipment must be located in a separate electrical room of adequate size. The electrical room can only contain electrical and/or communication equipment. It must not contain mechanical devices, such as gas or water equipment.
  • A detail of the electrical room layout must be submitted for EDTI approval.
  • All electrical rooms must have four walls and a ceiling.
  • See the Metering Section (8.0) for more detail.
  • EDTI has specific servicing details for the Quarters Downtown Development area. If your development is in this area, which extends from 92 to 97 Street and from 101 to 103A Avenue, please contact us for these details.
4.9 Main Switch or Breaker Minimum Interrupting Capacity
  • The interrupting capacity of main switches and breakers must be sized according to Table 3.
  • The minimum interrupting capacity applies to all service entrance equipment.
  • The interrupting capacities indicated are for one service from one matching transformer.
  • Where a larger transformer is installed to feed several services, the interrupting capacity must match the total capacity of all the services.
  • For temporary services supplied from a permanent transformer, interrupting ratings must match the available fault currents at the transformer.
  • Due to higher fault levels, services supplied from the network system require larger interrupting capacities. Please see the Network Service Section (6.0)for more information.
4.10 Maximum Horsepower of Motors
  • The maximum permitted horsepower of motors permitted is identified in Table 2.
  • Special permission is required before EDTI will grant construction approval for motors larger than those indicated in Table 2. Please contact EDTI Customer Engineering Services for more information.
4.11 General Service Requirements
  • EDTI Customer Engineering Services reserves the right of final approval for the location of facilities before EDTI will grant construction approval.
  • The customer is responsible for the installation and maintenance of all civil work on private property, including maintaining the level of equipment. Civil work typically includes trenching, ducting, transformer or cubicle pads, ground grids, guardrails, and pull boxes. Please see Table 1above.
  • The customer is responsible for installing meter bases on private property.
  • The location of the meter socket in relation to the main disconnect depends on the voltage. See the Metering Section (8.0).

  • EDTI owns and installs all equipment on public property.
  • EDTI retains ownership of transformers, switching cubicles, and primary cables on the line side of the point of service.
  • Only EDTI employees or their authorized agents can operate or maintain any electrical facilities owned by EDTI.
  • The customer will comply with the standards set out by the Institute of Electrical and Electronics Engineers (IEEE) 519-1992 (Tables 10.3, 10.4, 10.5) when loads producing harmonic distortion are involved. The customer will also comply with the short- and long-term flicker limits as specified in Tables 2 and 6 of CAN/CSA-C61000-3-7 Electromagnetic Compatibility (EMC) – Part 3 – 7.
  • 125 A underground services for residential purposes are not available.
  • In Alberta, residential services are not designed for electric heating as the primary heat source. If it is to be used as the primary heat source, contact EDTI Customer Engineering Services prior to construction. The customer may be assessed additional costs based on the type of upgrades required.
  • Typical residential underground services are available at 100 A. To make arrangements for service connections greater than 100 A, contact us.
  • Voltage drop calculations are the customer's responsibility and must be submitted upon request.
  • The customer must ensure loading is balanced across all three phases of the service.
  • Customers are not allowed to take single phase 120V service off the three phase 240V service
  • EDTI will not connect any permanent or temporary service to the City of Edmonton's streetlight system.
  • The customer must provide space and easements for utility equipment to maintain flexibility of the power system, if required by EDTI. See the Easement Agreement Section (9.5) for more information.
  • Connections and disconnections must be done by EDTI or its authorized agents.
  • EDTI will not permit the installation of service lines crossing public property between private properties.
4.12 Trenching and Backhoe
  • All proposed cable routing and duct work is subject to EDTI's written approval before construction can begin.
  • As a customer, you cannot do any excavation work on City of Edmonton property, but you must provide all trenching on your property.
  • Underground service lines must be kept a minimum of 1.0 m from the edge of the property line.
  • The customer's contractor must not trench within 1.0 m of any EDTI wood pole, anchor, transformer, or switching cubicle ground grid (2.0 m from the edge of the concrete base), power pedestal, or energized cable. The facilities must be located first using hydro excavating or hand digging before determining where the mechanical excavation limits end.
  • Ensure that the top of duct is a minimum of 1,000 mm to a maximum of 1,300 mm below finished grade and that the service cable is set on undisturbed soil that is free from rocks, debris, and sudden grade changes. If large lumps of clay and soil have hardened due to drying or freezing, and when a backhoe has been used for electrical service installation, a 150 mm layer of sand must be placed below the cable. For all service installations, a 300 mm layer of sand must be placed above the cable.
  • The customer must backfill all trenches with material that is free of stones and items with sharp edges.
  • Backfill must be placed in uniform lifts not exceeding 300 mm and compacted to the City of Edmonton Design and Construction Standards Volume 2 – Roadways.
  • If a trench has been backhoed, cables must be shaded with 300 mm of sand. Backhoed material cannot be placed over cable.
  • Backfill material over cable can be the material trenched using a mechanical trencher, if the inspector deems it suitable. Soil with high thermal resistivity containing large amounts of organics, peat, black loam, sod, hardened clay, stones, straw, snow, or frozen material will not be acceptable. All backfill material is subject to the inspector's approval. Sand or clean backfill material must be substituted for unsuitable backfill.
  • A marker tape must be installed 0.5 m above all underground electrical conductors.
  • The trench must take the most direct route to the meter base location.
  • Some work may be required over energized primary or secondary cables. This may involve crossing or over trenching the cables. Mechanical excavation is allowed up to 1.0 m from the energized facilities. The facilities must first be located using hydro excavating or hand digging before determining where the mechanical excavation limits end.
  • EDTI Customer Engineering Services will allow a contractor to over trench up to 5.0 m of energized facilities by hand or hydro excavating. Follow Alberta One-Call procedures and call us before starting work.
  • Exposed energized cables cannot be left unattended. If the excavation is narrow or small, the primary cable must be covered with soil bags or secured with some other suitable temporary method. Contact us for more details.

Under no circumstances can energized primary cables be moved or handled in any way.

4.13 Four-Party Joint-Use Trench for Single-Family Residential Installations
  • With prior approval from EDTI Customer Engineering Services, a four-party joint-use trench may be used for residential installations only.
  • Telephone and television cables as well as gas service lines can be placed in a four-party joint-use trench with the power cable. When gas service lines are installed along with power cables, the four-party trench installation method must be followed:
    • A minimum of 0.3 m must seperate the gas and power lines and a marker tape must be installed 0.5 m above the service cable. Please see Drawing 18 for details
4.14 Service Ducts
  • EDTI Customer Engineering Services reserves the right of final approval for the location of facilities before EDTI will grant construction approval.
  • All permanent commercial services must be in duct.
  • For residential installations, EDTI highly recommends that any cable that will ultimately end up under driveways, decks, etc. be installed in duct. See Drawing 2 for a typical underground service installation.
  • Duct must be installed where primary cable is deemed inaccessible by EDTI. All ducts must be equipped with bell collars to avoid damaging the cable.
  • The installation of primary service cable under buildings is not permitted.   
  • The customer will provide all conduits (rigid PVC, DB2, Carlon Borguard, Terracon, or other EDTI-approved ducts only), pull boxes, and manholes required on the customer's property for installing the electrical services.
  • Service conduits installed by contractors working on behalf of other utilities or the City of Edmonton must follow the construction standards of EDTI Customer Engineering Services. Contractors must not work within 1.0 m of any electrical equipment.
  • If EDTI conduits have been stubbed to the property line, customers must first confirm that the conduit exposed is the correct one, and then connect their supply conduit to EDTI's conduit. Contact us to arrange for conduit verification.
4.15 Duct Bends
  • All bends exiting transformers and cubicles must be made of rigid, thick-walled PVC (schedule 40) with a minimum wall thickness of 6.0 mm for 4 in., 6.6 mm for 5 in., and 7.1 mm for 6 in. DB2 bends are not acceptable.
  • An additional 10 ft. horizontal section of rigid, thick-walled PVC must be attached to the bend.
  • Ensure all secondary ducts are aligned directly under the secondary bushings of the transformer and centred within the base opening.
  • All bends that EDTI will supply conductors for must be equipped with bell collars to avoid damaging cable.
  • All spare bends are to be covered (taped or covered by some other suitable method) to prevent material falling into them.
  • Precast concrete pad must be removed before inserting additional ducts into existing pads.
4.16 Site Housekeeping
  • Areas that our crews must access and work in must be clear of construction materials, equipment, debris, trash, and other materials that may pose a safety risk to personnel or damage equipment.
  • The site must be level and consist of hard-packed material or asphalt.
  • If a site has substandard housekeeping or is deemed unsafe by EDTI personnel, our personnel will leave the site until the issues are rectified.
4.17 Conductors
  • Armoured or metal-sheathed (TECK) cable cannot be used for permanent services.
  • With our permission, TECK cable can be used for temporary installations. The customer must supply all associated fittings, including connectors, grounding bushings, and weatherheads. See the Temporary Connections Section (9.11) for more details.
  • Secondary cables on all residential and multi-family developments must be concentric- neutral direct-buried type (USEB). See Table 6 for details.
  • For residential installations, ensure the conductor used on private property is compatible with EDTI conductors on City of Edmonton property. Table 6 shows standard cable sizes and types allowed.
  • For commercial installations, secondary cable must be individual RW90 conductors in duct.
  • For commercial services connected to a 3-phase padmount transformer, the maximum size of conductor allowed is 500 MCM copper or 750 MCM aluminum.
  • For all residential and multi-family 1-phase services, the maximum conductor size allowed is 4/0 AL XLPE CN.
  • The maximum size of secondary conductor allowed for commercial underground secondary services in an aerial area (secondary lateral) is 500 MCM copper. 750 MCM aluminum is not an acceptable conductor.
4.18 Cable Installation
  • Telephone and television cables can be installed in the same trench as power conductors. When this is considered, design drawings must be forwarded to the appropriate organizations for their approval.
  • Cable cannot be installed on building footings or weeping tile.
  • Secondary cable ends must have heat shrink caps installed.
  • EDTI will make the final connection in the cubicle, transformer, or pedestal.
  • The customer will supply and install secondary conductors from the customer's switchgear to the transformer location, leaving 3.0 m (no more or less) of conductors above the top of the precast transformer base. Then the conductors must be coiled in a clockwise direction and left in an organized manner around the inside perimeter of the base to allow for easy removal and shaping.
  • The phasing of secondary conductors coiled in a transformer must be identified with marking tape at intervals no longer than 1.0 m.
  • The maximum length of service conductors permitted in a building is 3.0 m, unless they are mechanically protected in rigid metal conduit, in which case the maximum is 7.5 m.
  • In general, a maximum of six runs of secondary conductors are permitted for all 1-phase padmount transformers. In some circumstances, additional runs may be permitted. Contact us to discuss your specific installation.
  • In general, a maximum of six runs of secondary conductors are permitted for 3-phase padmount transformers up to 1,000 kVA. In some circumstances, additional runs may be permitted. Contact us to discuss your specific installation.
  • In general, a maximum of eight runs of secondary conductors are permitted for 1,500 kVA and 2,500 kVA 3-phase padmount transformers. In some circumstances, additional runs may be permitted. Contact us to discuss your specific installation.
  • The customer must identify service conductors by the meter address, by using long-life ink on a tie-wrap attached to the conductors. This identification is mandatory when there are multiple service connections or when a customer-owned distribution facility, such as a pedestal, is used.
4.19 Underground Residential Distribution Areas

This section applies to areas with a mix of residential and commercial lots that will contain underground power facilities and are designed and built by a developer. While other information on underground secondary services found elsewhere in this guide also applies, the following information is specific to underground residential distribution areas.

  • In underground residential distribution areas, the standard service size is 100 A. The area's developer may have installed a larger cable to compensate for voltage drop. The cable size installed does not necessarily indicate the size of service that is available. Contact EDTI Customer Engineering Services for more information.
  • If power coils are left at the property line but are too short to reach the meter base, the customer or the customer's contractor must call EDTI Meter Services to complete the splice. If the contractor has taken the most direct route but the cable is short, EDTI will complete the splice at no charge. In all other circumstances, there will be a charge for the splice. Contact EDTI Meter Services for splicing costs and payment details.
  • As the customer, you or your contractor must ensure a splice pit is dug at the service entry location. See the Additional Information Section (9.10) for more information.
  • If there is no service conductor coiled at the property line, the customer or the customer's contractor must trench and supply and install conductors from the meter base to the property line, with enough conductors at the property line to allow for termination. Contact EDTI Customer Engineering Services for length.
  • See Drawing 2 for a typical underground service installation.
  • For the customer's standard service conductors, please see Table 6. Due to voltage drop concerns, cable sizes installed in residential subdivisions may not match the service sizes indicated in the table. The customer's cable must match the cable stubbed at the service entry point.
  • Due to the possibility of voltage drop, please contact us to confirm cable requirements for service lengths exceeding 30 m on private property.
  • In newer subdivisions, 30 m of service cable is coiled on the property side of the gas easement.
4.20 Underground Secondary Service in an Aerial Area (Secondary Lateral)
  • There will be additional costs associated with this type of service. Please contact us for specific information.
  • If you're looking for an underground secondary cable to be installed to the building from a transformer mounted on a pole, complete the following procedure:

For Commercial Installations:

  • The customer must supply and install the service conduit from the customer's panel to the property line.
  • The maximum size of service conduit is 100 mm (4 in.) in diameter. See the Service Ducts Section (4.14) and Cable Installation Section (4.18) for more details.

  • The customer must connect the conduit to EDTI's conduit (if existing) at the property line.
  • The customer must supply and install sufficient length of conductor to terminate at the pole-mounted transformer. EDTI Customer Engineering Services will determine the length of conductor.
  • The maximum size of secondary conductor allowed for commercial underground secondary services in an aerial area (secondary lateral) is 500 MCM copper. 750 MCM aluminum is not an acceptable conductor. See the Conductors Section (4.17) for more details.
  • EDTI will complete all work on City property, including:
    • Supplying and installing conduit from the property line up the pole
    • Coordinating with the electrical contractor to ensure the customer-supplied conductors are pulled from the property line up the pole

For Residential Installations:

  • Duct is not required for residential installations, but EDTI strongly suggests it under pavement, decks, etc.
  • The customer must leave a coil of cable (of a length determined by EDTI) at the property line, buried in sand at the designated service entry point. See Table 6 for acceptable secondary cables.
  • EDTI will complete all work on City property, including:
    • Supplying and installing conduit from the property line up the pole
    • Pulling customer-supplied conductors (including telephone and television cable) from the property line up the pole
  • A possible alternative to taking an underground service from an EDTI pole is to take an overhead service to the garage and sub-feed the house with an underground service. Please contact EDTI Customer Engineering Services for more details.
4.21 Increased Services

If you're looking to increase the size of your electrical service, complete the following procedure:

4.22 Multi-Family Developments and Mobile Home Parks

This section applies to multiple-metered residential service connections where 1-phase padmount transformers and service pedestals are required on the customer's property. While information on secondary services found elsewhere in this guide also applies, the following information is specific to multi-family developments and mobile home parks.

  • All cables used must strictly conform to the specifications of EDTI Customer Engineering Services.
  • The customer must install a distribution facility such as a service pedestal. Pedestals must meet Canadian standards and Canadian Electrical Code requirements for bending radius and space to ensure proper termination. The maximum pedestal rating is 400 A based on the allowable secondary conductors of parallel 4/0 Al from Table 6. Service to an individual dwelling unit cannot be directly connected to the transformer.
  • The customer must identify service conductors at the padmount transformer by pedestal number, and at the pedestal by meter address, which is the address of the building the meter serves. Meter sockets must be identified by service address and pedestal number. Use a long-life ink on a tie-wrap attached to the conductors for this identification. This is mandatory if a customer-owned distribution facility, such as a pedestal, is used.
  • For emergency purposes, each pedestal must be identified with the name and phone number of an on-site representative who is available 24 hours a day.
  • Before energization, the customer must make all terminations on all incoming feeds from the transformer at the service pedestals, and at the neutrals in the pedestals, for the individual services to the units. Customers must not terminate the hot conductors of the service wire in the pedestal. EDTI will extend a customer-supplied conductor to the switching cubicle or pole on City of Edmonton property.
  • Drawing 12 provides information on submission requirements for multi-family developments.
  • EDTI will require that a blanket easement be registered on title for most multi-family installations. A blanket easement covers the entire parcel of land.
4.23 Duplex, Triplex, and Fourplex Units

All units on one lot

  • Each individual unit in a new multiple dwelling will be served as a separate service, unless EDTI Customer Engineering Services agrees otherwise.
  • If a homeowner's agreement is in place, one service may be installed to a common location on the building to service all the units.
  • Please contact us to discuss your specific situation.

Each unit on an individual lot

  • Each individual unit in a new multiple dwelling must be served as a separate service, unless EDTI Customer Engineering Services agrees otherwise.
  • EDTI may require additional work at the customer's expense to ensure no trespass is created.
  • Please contact us to discuss your specific situation.

Bare-land development

4.24 Service Interruption
  • While EDTI takes all reasonable efforts to guard against interruptions, we do not guarantee uninterrupted service.
  • Without liability of any kind to EDTI, EDTI Customer Engineering Services has the right to disconnect or otherwise curtail, interrupt, or reduce Distribution Tariff Service to customers whenever EDTI reasonably determines, or is told by the Alberta Electric System Operator, that such a disconnection, curtailment, interruption, or reduction is necessary:
    • To facilitate construction, installation, maintenance, repair, replacement, or inspection of any of EDTI's facilities
    • To maintain the safety and reliability of EDTI's distribution system
    • For any other reason, including dangerous or hazardous circumstances such as emergencies, forced outages, potential overloading of EDTI's distribution system, or force majeure
4.25 Next Steps

Your next steps are to ensure the metering facilities at your Site are built correctly and to contact an energy retailer of your choosing to apply for power service.

  • You are free to choose any retailer. Regulated wires services do not depend on the retailer you choose. For a listing of licensed Alberta retailers, visit ucahelps.alberta.ca or call 310-4822 (toll free in Alberta).

​Section links

Drawing 2

Typical underground residential service installation on property

Drawing 12

Sample of submission for multi-family developments
(For example purpose only)

Drawing 18

Typical underground residential service installation four party trench
(Power, Gas, Phone &CATV)

Drawing 29

EPCOR 5kV, 15kV, 25kV and downtown engineering distribution areas

Table 1

Customer's / EDTI's responsibilities

Table 1C

Underground secondary service

Table 2

Maximum horsepower of motors permitted

Table 3

Main switch or breaker minimum interrupting capacity

Table 4

Part 1: Primary cable, duct, and pull box standards
Part 2: Primary cable, duct, and pull box standards examples

Table 6  

Residential and multi-family underground services – Acceptable conductors