Appendix S - SaskPower Electrical Service Requirements

Section 2.1Technical Requirements For Service Up to and Including 5 kVRESIDENTIAL213• 400 A, 120/240 V Self-Contained Meter Socket (Figure 2-4)The enclosure shall:• have stud type line and neutral terminals so arranged as to permit straight in conductor connectionsand suitable for securing SaskPower compression lugs.• have minimum dimensions of 914 x 508 x 203 mm (36 x 20 x 8 inches).• be capable of using 78 mm (3 inch) conduit.The Consumer shall install the SaskPower supplied 3-wire current transformer. SaskPower shall make allterminations to the secondary of the current transformer.A single meter socket, rated up to 400 A, with dual wire connectors on the load side shall be permitted twosubdivisions. However, the subdivision of the consumer service can be accomplished within the dual lug metersocket provided that the total ampere rating of the two consumer service disconnects does not exceed theampere rating of the meter socket.For supply service conductors exceeding 500 kcmil, or multiple conductors per phase, a splitter shall be used inconjunction with the meter socket. The splitter becomes SaskPower’s point of delivery.2.1.6.3 Electrical RoomThe electrical room shall conform to all aspects of the Code, and shall:• be located within a building or suitably attached to the building with walk-in access and finished floor.• be accessible directly from the exterior of the building or from a common hallway.• be accessible via stairs, if not at ground level. Access via a ladder is not acceptable.• be suitable to permit future modifications.• maintain a minimum clearance of 1000 mm in front of all electrical equipment.• maintain a minimum clear space of 600 mm when a hinged door or panel of an instrument enclosure is in anopen position that would block an exit route.• have one duplex electrical receptacle installed in close proximity to the electrical equipment.2.1.6.4 Instrument Transformers & Enclosures2.1.6.4.1 GeneralWhen the main service exceeds 200 A or 600 V, and the metering is not at SaskPower’s facilities, the instrumenttransformer enclosure shall be supplied and installed by the Consumer. For service voltage at 4160 V, the Consumershall supply and install the instrument transformer enclosure and meter socket.Revenue metering instrument transformers and other associated equipment supplied by SaskPower shall be usedexclusively for the purpose of SaskPower revenue metering.For services with multiple instrument transformer enclosures, each enclosure shall have a separate means of disconnect.Electric Service Requirements November, 2004