Customer Metering and Services Guide

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2 This document is an uncontrolled copy and may not be the most current copy. The most current copy is available at This document is the property of ATCO Electric and may be updated at any time.

3 About this Guide The intent of this guide is to provide direction and guidance for customers, consultants and electrical contractors either requiring or installing an electrical service that will be energized by ATCO Electric. This guide provides specifications for metering configurations for most services under 750 volts. The metering and service specifications outlined in this publication must also comply with all applicable requirements of Part 1 of the current Canadian Electrical Code, the Alberta Safety Codes Act and ATCO Electric's "Terms & Conditions. All metering and service installations must meet these requirements. Where the design, application, location or construction of the installation does not conform to these requirements or violates any other related act or code regulations, ATCO Electric will not install metering or energize a service. Additional copies of this publication are available on the ATCO Electric internet site at Installations NOT covered by this Guide Special arrangements can be made for installing service connections not specified in this guide, with approval prior to installation. Consult the local ATCO Electric customer service representative for more information

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5 Table of Contents List of Drawings and Tables 5 Glossary 7 GENERAL INFORMATION 9 APPLICATION FOR SERVICE AND GENERAL REQUIREMENTS 13 Non-Standard Services 16 RESIDENTIAL SERVICES 17 Single Phase Residential Services Self-Contained Metering 18 Single Phase Residential Services Instrument Transformer Metering 29 Multiple Customer Metering 30 FARM SERVICES 35 Single Phase Farm Services Self-Contained Metering 36 Single Phase Farm Services Instrument Transformer Metering 41 Three Phase Farm Services Self-Contained Metering 43 Three Phase Farm Services Instrument Transformer Metering 44 COMMERCIAL SERVICES 47 Single Phase Commercial Services Self-Contained Metering 48 Single Phase Commercial Services Instrument Transformer Metering 50 Three Phase Commercial Services Self-Contained Metering 53 Three Phase Commercial Services Instrument Transformer Metering 54 INDUSTRIAL SERVICES 57 Single Phase Industrial Services Self-Contained Metering 58 Single Phase Industrial Services Instrument Transformer Metering 60 Three Phase Industrial Services Self-Contained Metering 63 Three Phase Industrial Services Instrument Transformer Metering 64 MICRO GENERATION 71 TEMPORARY SERVICES & IDLE SERVICES 73 INSTRUMENT TRANSFORMERS 75 MANUFACTURED SWITCHGEAR FOR SERVICES & METERING

6 Appendix 89 Diagrams of Socket Connections 89 Diagram of Socket Connections continued 90 Wiring Diagram for Grounding Resistors 91 Design Clearances on Underground Distribution 93 Sizing of Building Alcove for Locating a Padmounted Transformer 94 Typical Alignment on Front Street Monolithic Curb/Sidewalk 95 Typical Alignment on Front Street Boulevard / Rear Traffic Lane 96 Typical Alignment on Rear Lot Utility Lane / Rear Easement Access 97 Landscaping Adjacent to Underground Electrical Equipment 98 Landscaping Adjacent to Padmount Transformer and Pedestal 99 Landscaping Adjacent to Padmount Switch Cable and Street Light 100 Protective Guard Posts for Padmounted Transformer or Switching Cubicles (Open Areas) 101 Protective Guard Posts for Padmounted Transformer Located in Alcoves

7 List of Drawings and Tables Standard Overhead Distribution Voltages 10 Standard Underground Distribution Voltages 10 Recommended Voltage Variation Limits 11 Underground Residential Pedestal, Service and Cable Stubbing Arrangement 22 Multiple Services in a Multiple Dwelling 23 Optional Townhouse Multi Meter Detail 24 Multi-Port Connection Terminals for AMR 25 Acreage Customer Owned Secondary - Mounted on a Pole 28 Typical Arrangement for Multiple Customer Metering 32 Quadlogic minicloset Metering Equipment 33 Farm Type Metering 38 Padmount Transformer and Underground Service on a Farm 39 Installation of Multi-Breaker Box for Farm Type Metering of 2 Services 40 ATCO Electric Standard for Self-contained Metering of 100 or 200 amp on An Oilfield Service Pole 66 Pole Metering for Oilfield Loads Over 200 Amps 67 Customer Owned Metering in a Building, for Oilfield Loads Over 200 Amps 68 Secondary Overhead to Underground Riser on a Pole 69 Meter Requiring Instrument Transformers 76 Typical Connections for 3 Phase 4 Wire Wye Services 77 Meter and Test Switch Enclosures 78 Single Phase, 3W 120/240 Volt Instrument Metering 79 3 Phase, 4W 120/208Y Volt Instrument Metering 80 3 Phase, 4W 277/480Y or 347/600Y V Instrument Metering 81 Bolting Instrument Transformer 82 3 Phase, 4W 347/600Y V Instrument Metering AMR Equipped 83 2 Wire Current Transformer 600V Class 84 Window Type Current Transformer 600V Class 85 Voltage Transformer 600V Class

8 Diagrams of Socket Connections 89 Diagrams of Socket Connections cont d 90 Wiring Diagram for Grounding Resisters 91 Design Clearances on Underground Distribution 93 Sizing of Building Alcove for Locating a Padmounted Transformer 94 Typical Alignment on Front Street Monolithic Curb / Sidewalk 95 Typical Alignment on Front Street Boulevard 96 Typical Alignment on Rear Lot Utility Lane 97 Landscaping Adjacent to Underground Electrical Equipment 98 Landscaping Adjacent to Padmount Transformer and Pedestal 99 Landscaping Adjacent to Padmount Switch Cubicle or Street Light 100 Protective Guard Posts for Padmounted Transformer or Switching Cubicles (Open Areas) 101 Protective Guard Posts for Padmounted Transformer Located in Alcoves

9 Glossary AMR Automatic Metering Reading AMI Advanced Metering Infrastructure refers to a system that measures, collects and analyses energy usage, from advanced devices such as electricity meters, gas meters and / or water meters, through various communication media on request or on a predefined schedule. This infrastructure includes hardware, software, communications; Customer associated systems and meter data management software. CEC Canadian Electrical Code, Part 1 and Amendments CMT Commercial Metering Transponder for AMR CSA Canadian Standards Association CT Current Transformer AECUC Alberta Electrical and Communications Utility Code Demand The average value of power over a specified interval of time. The most common quantities are kilowatt (kw) and kilovolt amperes (kva) demand. Energy The integral of active power with respect to time. E.g. kilowatt-hours (kwh) Ground The conductor that only carries current under a fault condition, not to be used as Neutral. Harmonics Are distortions to the voltage and current waveforms from their normal sinusoidal shape. IMT Integrated Metering Transponder for AMR Instrument Transformer Metering Using a transformer in a metering circuit to step down the current and/or the voltage to a level that can be accommodated safely by the meter. Interval Data Metering Revenue meters that have mass memory data storage capability. Measurement Canada Oversees the sealing and verification of electric meters used for revenue consumption. Meter Base typically a socket style device for the connection to a self-contained meter. Metering Services Provider Owns and maintains the revenue meters on the distribution system. Meter Socket and Test Switch Enclosure meter socket with a pre-wired metering test switch for use with current and/or voltage transformers enclosed in a metal housing. MIT Meter Interface Transponder for AMR - 7 -

10 Multiple Customer Metering Multiple residential metering where the building does not use standard individual meters for each suite. The metering uses mini CT s on each branch circuit. Multiple Service A service to a building such as an apartment building or shopping centre that has two or more units and a common service entrance in which each unit is served and metered separately. Network Two phase wires and the Neutral from a three phase four wire wye system that form a three wire service for residential type loads. Neutral The conductor from the transformer Star point that carries the imbalanced load current and provides a reference point for the metering potentials, the grounded conductor. Non-Farm A service where the Customer in not engaged in a farming application. Non REA A service where the Customer does not belong to a Rural Electrification Association. R.E.A.L Rural Electrification Association Limited (REA) Retailer Markets electrical energy or electrical services to consumers. Rural Service A service in a rural area where the Customer does not farm or belong to a REA. Self-Contained Meter A meter designed to accommodate the full line current and Voltage of the circuit. SCA Alberta Safety Codes Act Settlement System Code Agreement between retailers, wire service providers, transmission service providers, the independent system operator meeting the requirements of the Alberta Electric Utilities Act. VT Voltage Transformer The Company ATCO Electric. Wire Service Provider Owns and operates the electric distribution system

11 GENERAL INFORMATION Types of Metering The type of metering specified by the Company shall depend on the class of service, size of load to be served and the applicable rate, for e.g.: energy, kw or kva demand. The Company shall install, maintain and own all meters, except for meters on R.E.A.L. member services, where they are owned by the R.E.A.L. Independent Power Producers may also own their own meter but it must conform to the Measurement System Standard for the province of Alberta. All meters must be sealed, maintained and tested according to Measurement Canada standards. Self-Contained Metering Used for metering loads up to and including 600 volts where the main breaker does not exceed 200 amps. (single phase to 480 and three phase to 600 volts) Instrument Metering Used for metering loads where the main breaker is greater than 200 amperes and/or over 600 volts. On loads over 500 kw, interval data meters are required. Optional Customer Pulse Upon request a pulse output meter or devices such as transducers and pulse duplicating relays may be installed in the Customers metering circuit. The Customer will discuss data acquisition needs with the Company early in the project planning stages. The Company installs the optional pulse devices and the Customer will be billed for costs above the Company's standard installations. Customer Choice Metering Upon request, an interval data meter can be installed on a Customer installation that is <500 kw. The Customer will request the meter be installed and will be billed for the costs above the Company s standard installation and for a monthly fee to collect the interval data. Standard Three Phase Metering Configuration All new three phase services are to be four wire wye (Star) systems, metered three element with the Neutral (grounded conductor) forming part of the metering circuit. The Neutral conductor must be connected between the transformer or point of supply and the metering point of all three phase, four wire, wye systems. The Neutral must be grounded at the main service disconnect. The use of an isolated Neutral block is necessary when the metering point is on the load side of the main service disconnect. Primary Metering Primary metering is available for multi voltages or services normally over 1000 kva. Unmetered Services The Company does not allow unmetered services. All services must be metered with Measurement Canada approved revenue meters to comply with the Alberta Settlement System Code requirements

12 Standard Supply Voltages The following tables show the Company's standard overhead and underground voltage, phase and load configurations. Not all standard voltages are available at all locations: Table 1 Standard Overhead Distribution System Transformer Load Full Load Range Line Service Voltage Phase / Wire Range Amperes 120/240 Single Phase, 3 Wire 10 to 167 kva (may be larger for Special 83 to to 696 Amps 120/208Y Three Phase, 4 Wire 30 to 300 kva 83 to 833 Amps 277/480Y Three Phase, 4 Wire 15 to 3000 kva 18 to 3610 Amps 347/600Y Three Phase, 4 Wire 150 to 3000 kva 144 to 2887 Amps Service Voltage Table 2 Standard Underground Distribution System Transformer Load Full Load Range Line Phase / Wire Range Amperes 120/240 Single Phase, 3 Wire 10 to to to 416 Amps 120/208Y Three Phase, 4 Wire 75 to 500 kva 208 to 1388 Amps 277/480Y Three Phase, 4 Wire 30 to 4000 kva 36 to 4813 Amps 347/600Y Three Phase, 4 Wire Minimum 150 kva 144 Amps and Up Other Voltages Service may be provided at any required voltage, under mutually, satisfactory agreed terms. Requests for non-standard voltage supply must be approved by the Company. Voltage Operating Conditions All services are alternating current 60 hertz. The normal system voltage and voltage limits at the service entrance are as specified in the Canadian Electrical Association Reference Standard for Canadian Practice "Preferred Voltage Levels for AC Systems 0 50,000 volts" and CSA Standard CAN 3 C235 83, Table

13 For circuits up to 1,000 volts the recommended voltage variation limits at the service entrance: Table 3 Extreme Operating Conditions Nominal Voltage Normal Operating Conditions Single Phase 120/ / / / / Three Phase 4 Conductor 120/208Y 110/ / / / /416Y 220/ / / / /480Y 245/ / / / /600Y 306/ / / /635 Three Phase 3 Conductor For supply circuits of 1,000 50,000 volts the recommended voltage variation to the Customer is: 1. The voltage rise does not exceed six percent above normal (7.2V on 120V base). 2. The voltage drop on sub transmission does not exceed six percent below normal (7.2V on 120V base) or on distribution does not exceed eight percent below normal (9.6V on 120V base). 3. The voltage variation from maximum to minimum on load cycle periods does not exceed nine percent (10.8V on 120V base). Ownership of Facilities The Company or the R.E.A.L retains full title on all equipment, lines and apparatus which it provides in extending service and metering the electricity supply. Instrument transformers provided by the Company and installed by a Customer remain the property of the Company. "Terms & Conditions and Rate Schedules Information on the ATCO Electric's "Terms & Conditions and Rate Schedules are available at any ATCO Electric office or at

14 Minimum Permissible Secondary Service Clearances Specification Note: Lowest conductor shall not be less than 4.0 m above finished grade. Dimensions in metres D-SC28 May

15 APPLICATION FOR SERVICE AND GENERAL REQUIREMENTS The Customer should apply for service early in the planning stage of a project in order for the Company to meet the Customer's needs, determine the best service arrangement and to provide the time to obtain necessary equipment. Contact the local Customer Service Representative or see application requirements on The Customer shall provide the Company with all the necessary information regarding the type of service, connected loads, timing, service voltage and a site plan. A service agreement may be required with the Company's "Terms & Conditions and the rate schedule applicable to the service. A Customer contribution may be required. Service Voltage and Location The service voltage is the voltage and phase(s) requested by the Customer. Each service will be at one of the standard voltages listed in this guide and will be metered appropriately. Requests for voltage supply must be approved by the Company. The service location on the Customer's premises is subject to approval of the Company. Service Entrance Drawings To ensure the Customer does not experience any delays on a service entrance over 200 amperes, three sets of drawings of the service entrance, service location and service, and metering layout shall be submitted to a Company Customer service or marketing representative. The drawings shall be stamped final and initialed by the issuing consultant or electrical contractor. All installations shall comply with the applicable requirements of the Canadian Electrical Code and Alberta Safety Codes Act regulations. Access The Company has the right, and will endeavor to make reasonable arrangements, to enter the Customer's property or premises to install, inspect, read, change, maintain and remove its facilities. For Company facilities located within locked Customer premises the Customer shall provide a means of access. In subdivisions, the developer shall provide easement at no cost to the Company where required for access, and for providing service extensions to each parcel of property. Meter Locations All metering and service locations shall be approved by the Company prior to installation. Meters shall be located either on the line side where the voltage is less than 300V line to line or load side of the Customer's main breaker (disconnect) where the voltage is greater than 300V line to line as detailed in the Canadian Electrical Code. Company personnel must have reasonable access to the meter to perform meter changes, testing and meter reads

16 The Company will not install meters in alleyways or areas where the meter is unprotected from moving equipment, in the path of water from eaves or rain spouts or where the meter may be subject to steam, corrosive hazardous vapors. The Company will not install meters in areas that are difficult to access areas such as; Inside all biologically hazardous areas, poultry / pork or any other livestock facilities where the spread of disease or virus is possible. This includes directly under any vents or fans that move air to or from the building. No meters shall be mounted in a known H2S environment. The meter must be installed outside of this zone. open pits, near moving machinery, hatchways, closets or stairways where there are noticeable vibrations. Splitter Box Location A splitter box must not be installed ahead of the meter or service disconnect. The instrument transformer enclosure can not be used as a splitter box. Wiring Permit A copy of a signed electrical wiring permit shall be presented to the Company before the electrical service is connected on a new, altered or relocated service. Retailer The Customer must have a retailer before a service can be energized. A retailer or any other person acting as an agent of a Customer may apply for a service connection on behalf of the Customer. The Retailer or agent must provide the Company, in a form acceptable to the Company, verifiable authorization from the Customer to make the application. Relocations Where a building extension encloses or interferes with existing metering, the Company will relocate the service at the Customer's expense. There is no charge if the overhead service conductors and the meter only are relocated. The Company will, at the request of a Customer, relocate the facilities installed to service the Customer, provided the Customer pays all costs of such relocation. There will be no charge to relocate only the meter and overhead service conductors

17 Modifications Customers shall obtain written approval from the Company before modifying an existing service which may affect the metering. The Customer may be charged for costs associated with any change required to the Company's facilities due to the service modification. Customer Grounding Resistor Refer to page 91, Wiring Diagram for Grounding Resistors. Load Changes A Customer shall advise the Company in writing of any changes to their load requirements so that the Company may determine if service changes are required to accommodate the increased load. The Customer shall provide sufficient time for the Company to obtain equipment and make the necessary changes. If a Customer has not obtained permission from the Company the Customer can be held responsible for any damage to the Company's property or equipment resulting from a major change in a load. Harmonic Loading Additions The Customer shall notify the Company when harmonic loads such as VFD (variable frequency drive) motors are added to an existing utility transformer. If the calculated harmonic current is in excess of 5% of the utility transformer rated current as stated in IEEE C , the transformer may have to be changed. The Customer shall be responsible for any incremental costs associated with the transformer change. Harmonic Distortion All Customers with loads producing harmonic distortion shall comply with the "ATCO Electric Transmission and Distribution System Guide to Nonlinear Load Additions". This document follows The Institute of Electrical and Electronics Engineers "IEEE Recommended Practices and Requirements for Harmonic Control in Electric Power Systems" with some ATCO Electric modifications which take precedence over IEEE This guide outlines the procedures, information and technical requirements to be observed from the initial design stages to the energizing of the harmonic producing load installation. Contact your local Company representative for a copy of this document. For detailed information on Harmonics and New Loads please refer to the ATCO Electric webpage Go to Forms and Publications, Distribution System Standard for the Installation of New Load. Three Phase Loads The Customer is responsible for single phase protection on three phase loads. Electronic Loads The Customer is responsible for protecting all sensitive electronic loads against transients caused by such events as lightning or utility switching

18 Non-Standard Services Service and metering requirements not covered in the guide are to be discussed with the local Company representative. The Customer shall submit three sets of drawings of the service entrance, service location and service and metering layout to a Company Customer service representative. The drawings shall be stamped final and initialed by the issuing consultant or electrical contractor. All installations shall comply with the applicable requirements of the CEC and SCA regulations. The Company will make every effort to meet the Customer's needs. Power Factor A Customer shall design, install and operate the Customer's facilities in such a manner as to maintain a Power Factor of not less than 90%. The Company may require any Customer not satisfying this Power Factor requirement to furnish, install, and maintain, at no cost to the Company, such corrective equipment as the Company may deem necessary under the circumstances

19 RESIDENTIAL SERVICES Residential services are generally self-contained metering services to an urban or rural house or dwelling. Note: REA and Farm residences are not covered by this section. See Farm Services for those applications. General Requirements Metering shall be located on the line side of the Customer's main breaker. Metering shall be located on the outside wall of the house except for rural residential services which may utilize pole metering. The Company will advise the Customer if pole metering is to be used. Where recessed metering is installed in a wall, a clear space of not less than 0.2 metres on either side of the centre line of the meter base and 1.0 metre in front of the meter is required, to provide the Company access to the meters. The centre line of the meter socket shall be 1.5 to 1.8 metres above the finished grade or permanent platform. The meter socket must not have a self shorting device

20 Single Phase Residential Services Metering Single phase metering is used for residential services where the main breaker rating does not exceed 200 amperes. Metering shall be located on the line side of the Customer's main breaker. General Requirements For all single phase services, a 4 jaw meter socket shall be used. See page 89, Diagram of Socket Connections. The meter socket must not have a self shorting device. AMR meters may measure up to 216mm (8½") in depth; therefore, sufficient clearance must be taken into consideration when installing the AMR meter on a wall or in a cabinet or enclosure. For AMR water meter hook up, the water meter wire hole shall be positioned directly below the meter base and as close to the left hand side of the conduit as possible without interfering with main service panel. Refer to page 25, Multi-port Connection Terminals for AMR. Overhead Urban Residential Service The Customer shall: Supply and install a CSA approved low voltage, socket type meter base. Supply and install conduit, weatherhead, rack and conductor in the mast on the line side of the main breaker. Supply and install all wiring, equipment and facilities on the load side of the meter. The Company shall: Supply and install all facilities required for electrical service up to the weatherhead including: Conductors and connectors from pole to mast. The meter

21 Underground Urban Residential Service The Customer shall: Supply and install a CSA approved low voltage, socket type meter base. Supply and install the conduit for the Company's conductors to the meter socket on the line side. Refer to drawing on page 22, Underground Residential Pedestal, Service and Cable Stubbing Arrangement. Supply and install all wiring, equipment and facilities on the load side of the meter. Supply under ground secondary service conductors for services greater than 100 Amps. The Company shall: Supply and install all facilities required for electrical service up to the meter base for services up to 100 Amps including: Conductors and connectors from service pedestal or transformer within 3.0 m of the nearest corner of the house. Supply and install the meter. Overhead to Underground Urban Residential Service When a Customer requests an underground service from an overhead supply the Customer shall be responsible for all additional costs incurred by the Company

22 Urban Multiple Residential Dwelling Metering Single phase urban multiple residential dwellings include apartment buildings, duplexes or fourplexes where there are two or more meters, a main breaker and splitter box on the line side of the meters. General Requirements All metering shall be located inside of the building in the same room. Fourplexes, like duplexes, which have no main breaker ahead of the meters, must have the splitter and meters located together on the outside of the building using outdoor type weatherproof switchgear. Refer to page 23, Multiple Services in a Multiple Dwelling. For all single phase services, a 4 jaw meter socket shall be used. See page 89, Diagram of Socket Connections. The meter socket must not have a self shorting device. For all network services, a 5 jaw meter socket shall be used. See page 89, Diagram of Socket Connections. Each individual unit within a multiple dwelling will be served as a separate Point of Service, unless the Company agrees otherwise. See page 30, Multiple Customer Metering for complexes that are not selfcontained. Single Phase Urban Residential Multiple Dwelling Services from an Overhead Transformer The Customer shall: Supply and install a CSA approved low voltage, socket type meter base. Supply and install conduit, weatherhead, rack and conductor in the mast on the line side of the main breaker. Supply and install the main breaker, conductor and splitter box. Supply and install all wiring, equipment and facilities on the load side of the meter. The Company shall: Supply and install all facilities required for electrical service up to the weatherhead including: Conductors and connectors from pole to mast. Supply and install the meter

23 Urban Residential Multiple Dwelling Underground Service The Customer shall: Supply and install a CSA approved low voltage, socket type meter base. Supply and install the conduit and conductors from the service pedestal to the main breaker. Refer to drawing on page 22, Underground Residential Pedestal, Service and Cable Stubbing Arrangement. Supply and install the main breaker, conductor and splitter box. Supply and install all wiring, equipment and facilities on the load side of the meter. Supply under ground secondary service conductors for services greater than 100 Amps. The Company shall: Supply and install all facilities required for electrical service up to the meter base for services up to 100 Amps including: Conductors and connectors from service pedestal or transformer to the building. Supply and install the meter

24 Underground Residential Pedestal, Service and Cable Stubbing Arrangement Dimensions in mm X301 May 2009 Notes on Cable Stubbing: 1. Extend cable end a minimum of 300 mm above highest cable in trench. 2. Seal cable end with S.A.P. tape and cover with all weather tape. 3. Attach location tape to cable end and extend location tape to surface. 4. Refer to H9 for all tagging, signage & cable marking 5. Random separation Telephone/Cable TV/Power

25 Multiple Services in a Multiple Dwelling

26 Optional Townhouse Multi Meter Detail The drawing below indicates an optional connection configuration for an installation where there are multiple residential meters fed from one source such as a townhouse complex. Notes: 1. Meter sockets can be attached on either side or top of the junction box provided it meets the supply authority requirements. 2. A locking mechanism for a padlock is required on the junction box. ATCO Electric will supply the padlock. 3. The Customer is responsible for the supply and installation of: a. Junction box 760 X 760 x 250 mm weatherproof. b. Termination blocks sized to 300MCM AL. c. Meter sockets minimum 100 Amps. d. All conduit c/w expansion joint. e. All secondary connections from the termination blocks to the meter sockets. 4. ATCO Electric is responsible for; a. Supply and installation of meters. b. Supply, installation and connection of the source cable to the junction box

27 Multi-Port Connection Terminals for Automatic Meter Reading Residential Meters Connect a Water and/or Gas meter communications link to the AMR energy meter. Notes: 1. The Multi-port access cover must be sealed at all times. 2. The AMR water meter wire hole should be positioned as close as possible to the bottom left of the conduit (see diagram) without interfering with the main service panel. 3. The auxiliary metering wire that connects to the multi-port terminals must be ty-rapped to the meter socket conduit so that it can not be accidentally pulled from the Field Wiring Terminal block

28 Overhead Rural Residential Service The Customer shall: Supply and install a CSA approved low voltage, socket type meter base. Supply and install conduit, weatherhead, rack and conductor in the mast on the line side of the main breaker for a service on a building. Supply and install all wiring, equipment and facilities on the load side of the meter. The Company shall: Supply and install all facilities required for electrical service up to the weatherhead including: Conductors and connectors from pole to the mast. Supply and install the meter

29 Underground Rural Residential Service General Requirements Refer to page 39, Padmount Transformer and Underground Service on a Farm. The meter socket must not have self shorting devices. The Customer shall: Supply and install a CSA approved low voltage, socket type meter base. Supply and install the conduit for the Company's conductors to the meter socket on the line side. Refer to drawing on page 22, Underground Residential Pedestal, Service and Cable Stubbing Arrangement Supply under ground secondary service conductors for services greater than 100 Amps. Supply and install all wiring, equipment and facilities on the load side of the meter. The Company shall: Supply and install all facilities required for electrical service up to the meter base for services up to 100 Amps including: Conductors and connectors from service pedestal or transformer to the building. Supply and install the meter. Overhead to Underground Rural Residential Service When a Customer requests an underground service from an overhead supply, the Customer shall be responsible for all costs incurred by the Company

30 Acreage Customer Owned Secondary - Metering Mounted on a Pole Dimensions in mm X391 May 2009 Notes: 1. Customer to contact ATCO Electric when Customer secondary connection is ready. 2. Meter socket shall be grounded internally

31 Single Phase Residential Services Instrument Transformer Metering Single phase instrument transformer metering is used for residential services where the main breaker rating exceeds 200 amperes. Metering shall be located on the load side of the Customer's main breaker. General Requirements Metered and unmetered cable shall not be installed in the same auxiliary gutter or splitter box. There shall be no elbows with covers (LB's) or pull boxes between the instrument transformer cabinet and the meter socket. The meter shall be located on the inside of a building in the same room as the instrument transformer enclosure, separated by a maximum of 6.5 metres. If the meter cannot be accommodated inside the building, it may be located outside using a Microlectric FA4B-6T, 6 jaw meter socket & test switch enclosure that houses 2 2 wire current transformers. For all single phase instrument services, a 6 jaw meter socket and test switch enclosure shall be used. See page 78, Meter and Test Switch Enclosures Diagram (1). Refer to page 75, INSTRUMENT TRANSFORMERS for additional information. Overhead Service >200 Amps The Customer shall: Supply and install a CSA approved low voltage; six jaw meter socket and test switch enclosure. Supply and install the conduit, weatherhead, rack and conductors in the mast for metering located on or in a building. Supply and install all wiring, equipment and facilities on the load side of the meter. Supply and install a Company approved instrument transformer enclosure. See page 76, Meter Requiring Instrument Transformers. Be responsible for the installation and primary connection to the current transformer (lugs). The Company shall: Supply and install the primary facilities required for electrical service. Supply secondary service conductors. Supply the current transformers. Supply and install the meter

32 Multiple Customer Metering Multiple Customer Metering is used in apartment and condominium buildings where the developer decides not to use the traditional meter room that houses all the suite and house meters for the building. It consists of a main meter head and junction box connected to mini window type current transformers on the branch circuits to the suites. General Requirements The supply authority approved; multiple Customer metering is the minicloset supplied by Quadlogic Meters Canada Inc. Consult Metering Services to ensure the metering transponder, meter head, current transformer shorting block and current transformers are mounted in the correct location. All wiring and installation requirements must conform to the Canadian Electrical Code. Refer to the drawing on page 32, Typical Arrangement for Multiple Customer Metering for additional information. The Customer shall supply the utility engineering department with 3 sets of drawings for the installation of the project. These drawings are to include the electrical connection schematics for the current transformers and all associated panels. Maintain 1.0 metre clearance on each side of the cabinets for access

33 The Customer shall: Complete all installation of equipment including wiring termination; ensure all wire is in conduit. Install current transformers (CT s) on branch feeders; wire CT s to the CT shorting block. Install CT shorting block cabinet; wire CT shorting block to meter head cabinet. Ensure the CT shorting block cabinet and meter head cabinet are connected via minimum 2 conduit. Install meter head cabinet 1.5 to 1.8 metres above finished floor; install power circuit for meter head. Connect the meter head cabinet to the power panel by ¾ conduit. Connect the metering transponder to the power panel with the required power source. Install a dedicated telephone line (meter use only) from the telephone Company service panel to the RJ 11 termination at the metering transponder. Ensure a lockable disconnect for disconnecting the power to the apartment or suite. This is required for the Customer to turn off the unit when vacant or for the utility to turn off as required. Ensure that all house connected loads are not connected to the mini window type current transformer metering circuit supply. All house loads must be connected through the house metering supply. The Company shall: Procure the meter head, current transformer (CT) shorting block, current transformers (CT s) and telephone line termination blocks (RJ 11). Program, verify and seal the meter head. Verify the wiring connections from the CT s to the CT shorting block & to the meter head. Verify the power connection wiring to the meter head. Seal the meter head cabinet; seal the CT shorting block cabinet; seal the distribution panel containing the CT s

34 Typical Arrangement for Multiple Customer Metering This arrangement shows the supply transformer as delivering 347/600 V to the building. If the supply voltage is 120/208 V, then the requirements for the dry type transformers are eliminated

35 Multiple Customer Metering Quadlogic, MiniCloset 5, Meter Head & Junction Box A. Box Connector Channel B. CT Junction Box C. Mini Current Transformers D. MiniCloset 5 Meter Head E. Meter Head Cabinet F. Voltage Input & Fuse Block G. CT Connection Terminals

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37 FARM SERVICES Farm services are generally services supplying farming operations in a rural area. The system, up to the point of metering, is owned either by the Company or the Rural Electrification Area Limited. Farm and R.E.A.L. installations not covered by this guide will be handled by the local Company office. General Requirements Pole metering is the standard for Farm and R.E.A.L. services. With the Company s approval an REA Customer may install a main breaker and meter socket on a building. Where recessed metering is installed in a wall, a clear space of not less than 0.2 metres on either side of the centre line of the meter base and 1.0 metre in front of the meter is required, to provide the Company access to the meters. The centre line of the meter socket shall be 1.5 to 1.8 metres above the finished grade or permanent platform. The meter socket must not have a self shorting device

38 Single Phase Farm Services Metering Single phase metering is used for farm services where the main breaker does not exceed a rating of 200 amperes. For services less than 300 volts line to line, metering shall be located on the line side of the Customer's main breaker. For services over 300 volts line to line, metering shall be located on the load side of the Customer's main breaker. General Requirements Meters may be located on the outside of a building except for where transformer pole metering is installed. For all single phase services, a 4 jaw meter socket shall be used. See page 89, Diagram of Socket Connections. Overhead Farm Services The Customer shall: Supply and install all wiring, equipment and facilities on the load side of the meter. With permission install a CSA approved low voltage, socket type meter base on a building, and; Supply and install conduit, weatherhead, rack and conductor in the mast. Supply secondary service conductors to the transformer secondary. The Company shall: Supply and install all primary facilities required for pole metering including the multi-breaker box and the SE cable for the source. Supply and install the meter

39 Underground Farm Service The Customer shall: Supply and install the conduit for the Company's conductors to the meter socket on the line side. Refer to drawing on page 22, Underground Residential Pedestal, Service and Cable Stubbing Arrangement. Supply and install the secondary service conductors from service pedestal or transformer to the building. Connectors shall have NEMA spacing for connection to a spade terminal. Supply and install all wiring, equipment and facilities on the load side of the meter. The Company shall: supply and install the primary facilities required for electrical service including the underground metering pedestal, the line side underground cable and the breaker. supply and install the meter

40 Farm Type Metering Dimensions in mm X72 May 2009 Notes: 1. With the company's approval, the REA Customer may install the main breaker and meter socket on their residence or other building and the REA would own the facilities up to the meter. 2. Meter can be raised to prevent cattle rubbing

41 Padmount Transformer and Underground Service on a Farm Dimension in mm SAS-R381-1 May

42 Installation of Multi-Breaker Box for Farm Type Metering of 2 Services Dimensions in mm X73 May

43 Single Phase Farm Services Instrument Transformer Metering Instrument transformer metering is used for farm services where the main breaker exceeds a rating of 200 amperes. Metering shall be on the load side of the Customer's breaker. General Requirements Metered and unmetered cable shall not be installed in the same auxiliary gutter or splitter box. There shall be no elbows with covers (LB's) or pull boxes between the instrument transformer cabinet and the meter socket. The meter shall be located on the inside of a building in the same room as the instrument transformer enclosure, separated by a maximum of 6.5 metres. If the meter cannot be accommodated inside the building, it may be located outside using a Microlectric FA4B 6T, 6 jaw meter socket & test switch enclosure that houses 2 2 wire current transformers. For all single phase instrument services, a 6 jaw meter socket and test switch enclosure shall be used. See page 78, Meter and Test Switch Enclosures (1). Refer to page 75, INSTRUMENT TRANSFORMERS for additional information. Overhead Farm Service >200 Amps The Customer shall: Supply and install a CSA approved low voltage; six jaw meter socket and test switch enclosure. Supply and install the conduit, weatherhead, rack and conductors in the mast for metering located on or in a building. Supply secondary service conductors. Supply and install all wiring, equipment and facilities on the load side of the meter. Supply and install a Company approved instrument transformer enclosure. See page 76, Meter Requiring Instrument Transformers. Be responsible for the installation and primary connection to the current transformer (lugs). The Company shall: Supply and install the primary facilities required for electrical service. Supply the current transformers. Supply and install the meter

44 Underground Farm Service >200 Amps The Customer shall: Supply and install a CSA approved low voltage; six jaw meter socket and test switch enclosure. Supply and install a Company approved instrument transformer enclosure. See page 76, Meter Requiring Instrument Transformers. Supply and install all wiring, equipment and facilities on the load side of the meter. Supply and install the secondary service conductors from the service pedestal or transformer to the building. Connectors shall have NEMA spacing for connection to a spade terminal. Be responsible for the installation and primary connection to the current transformer (lugs). The Company shall: Supply and install all facilities required for electrical service up to and including the service pedestal or padmount transformer. Supply the current transformers. Supply and install the meter

45 Three Phase Farm Services Metering Three phase metering is used for farm services where the main breaker rating does not exceed 200 amperes. For services less than 300 volts line to line, metering shall be located on the line side of the Customer's main breaker. For services over 300 volts line to line, metering shall be located on the load side of the Customer's main breaker. General Requirements The meter may be inside a MCC electrical building for services over 300 volts line to line. It may also be at the transformer or service pole. For three phase services, a 7 jaw meter socket shall be used. See page 90, Diagram of Socket Connections continued. The meter socket must not have a self shorting device. For services over 300 volts line to line the 7 jaw meter socket must have an isolated neutral block. Overhead and Underground Farm Service The Customer shall: supply and install a CSA approved low voltage, socket type meter base. supply and install all wiring, equipment and facilities on the load side of the meter. for overhead services, supply secondary service conductors. for underground services, supply and install all secondary service conductors. Connectors shall have NEMA spacing for connection to a spade terminal. complete the secondary cable connections to the transformer secondary bushings of the padmount transformer. The Company shall: supply and install the primary facilities required for electrical service. connect the service conductors at the transformer pole. supply and install the meter

46 Three Phase Farm Services Instrument Transformer Metering Three phase instrument transformer metering is used for farm services where the main breaker rating exceeds 200 amperes. Metering shall be on the load side of the Customer's breaker. General Requirements Metered and unmetered cable shall not be installed in the same auxiliary gutter or splitter box. There shall be no elbows with covers (LB's) or pull boxes between the instrument transformer cabinet and the meter socket. The meter shall be located on the inside of a building in the same room as the instrument transformer enclosure, separated by a maximum of 6.5 metres. If the meter cannot be accommodated inside the building, it may be located outside in a weatherproof cabinet. Refer drawing on page 76, Meter Requiring Instrument Transformers. For all three phase instrument services, a 13 jaw meter socket and test switch enclosure shall be used. See page 78, Meter and Test Switch Enclosures (2). Refer to page 75, INSTRUMENT TRANSFORMERS for additional information

47 Overhead and Underground Farm Services >200 Amps The Customer shall: Supply and install an appropriate CSA approved thirteen jaw meter socket and test switch enclosure. Supply and install a Company approved instrument transformer enclosure. See page 76, Meter Requiring Instrument Transformers. Be responsible for the installation of and primary connection to, the current transformers (lugs) and the installation of the voltage transformers. Be responsible for ensuring that the neutral wire is extended into the instrument transformer enclosure. Refer to page 80, 3 Phase, 4 Wire 120/208Y Volt Instrument Metering & page 81, 3 Phase, 4 Wire 277/480Y Volt or 3 Phase, 4 Wire 347/600Y Volt Instrument Metering. For overhead services, supply secondary service conductors. For underground services, supply secondary service conductors. Connectors shall have NEMA spacing for connection to a spade terminal. Make the secondary cable connections to the transformer secondary bushings of the padmount transformer. Supply and install all wiring, equipment and facilities on the load side of the meter. The Company shall: For underground services, supply and install all facilities required for electrical service up to the padmount transformer. Supply current and/or voltage instrument transformers and upon request ship the equipment to the electrical contractor or manufacturer. Supply and install the meter. For the following three phase services or any other services not covered in this guide, see the local ATCO Electric office prior to construction. Overhead to Underground Farm Service Underground to Overhead Farm Service Underground Service from a Padmount Transformer Farm Service

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49 COMMERCIAL SERVICES Commercial services are typically businesses that provide sales, transportation, packaging, distribution, storage and accounting of goods and services. General Requirements Where recessed metering is installed in a wall, a clear space of not less than 0.2 metres on either side of the centre line of the meter base and 1.0 metre in front of the meter is required, to provide the Company access to the meters. The centre line of the meter socket shall be 1.5 to 1.8 metres above the finished grade or permanent platform and in a properly lighted area. The meter socket must not have a self shorting device

50 Single Phase Commercial Services Metering Single phase metering is used for commercial services where the main breaker rating does not exceed 200 amperes. For services less than 300 volts line to line, metering shall be located on the line side of the Customer's main breaker. For services over 300 volts line to line, metering shall be located on the load side of the Customer's main breaker. General Requirements Meters shall be located on the outside of a building except for where transformer pole metering is installed. For all single phase services, a 4 jaw meter socket shall be used. See page 89, Diagram of Socket Connections. The meter socket must not have a self shorting device. Overhead Commercial Service The Customer shall: Supply and install a CSA approved low voltage, socket type meter base on the building. Supply and install conduit, weatherhead, rack and conductor in the mast for metering located on a building. Supply and install all wiring, equipment and facilities on the load side of the meter. The Company shall: Supply and install the secondary conductors required for electrical service up to the weatherhead. Supply and install the meter. For special applications, such as a Farm Customer going onto a Commercial rate for grain drying, the Company shall supply and install a CSA approved low voltage, socket type meter base for pole metering