Receptacles (plugs) General (see Appendix B)

1) Receptacle configurations shall be in accordance with Diagrams 1 and 2, except

a) for receptacles used on equipment solely for interconnection purposes;
b) for receptacles for specific applications as required by other Rules of this Code; or
c) where other configurations are suitable.

2) Except as provided for by other Rules of this Code, receptacles having configurations in accordance with Diagrams 1 and 2 shall be connected only to circuits having a nominal system voltage and
ampere rating corresponding to the rating of the configurations.

3) Receptacles connected to circuits having different voltages, frequencies, or types of current (ac or dc) on the same premises shall be designed so that attachment plugs used on such circuits are not interchangeable.

4) Receptacles with exposed terminals shall be used only in fittings, metal troughs, and similar devices.

5) Receptacles located in floors shall be enclosed in floor boxes.

6) Receptacles rated 30 A or more and installed facing downward shall have provision for locking or latching to prevent unintentional detachment.

7) After installation,

a) receptacle faces shall project a minimum of 0.4 mm from metal or conductive faceplates;
b) any openings around the receptacle or cover shall be such that a rod 6.75 mm in diameter will not enter; and
c) receptacles, faceplates, and covers shall not prevent an attachment plug from being used in
the manner in which it is intended to be used.

Δ 8) Receptacles having CSA configuration 5-15R or 5-20R installed within 1.5 m of sinks shall not be located


a) on the area of the counter directly in front of the sink; and

b) on the area of the wall directly behind the sink, except where the distance between the wall and the inside edge of the sink exceeds 450 mm.


Source: Rule 26-700, CSA C22.1:21, Canadian Electrical Code, Part 1 (25th Edition), Safety Standard for Electrical Installations. © 2021 Canadian Standards Association. Please visit