Outlet boxes (see Appendix B)

1) A box or an equivalent device shall be installed at every point of outlet, switch, or junction of conduit, raceways, armoured cable, or non-metallic-sheathed cable.

2) Non-metallic outlet boxes shall not be used in wiring methods using metal raceways or armoured or metal-sheathed cable, except where the boxes are provided with bonding connections between
all cable entry openings.

3) Where metal fittings are used to terminate a non-metallic wiring method to a non-metallic outlet box, the metal fittings shall be bonded to ground.

4) Metal boxes embedded in parking lot slabs or pavement, road beds, and similar areas subject to vehicular traffic shall comply with the requirements of Rule 2-116 1).

5) The box shall be provided with a cover or luminaire canopy.

6) At least 150 mm of free insulated conductor shall be left at each outlet for making of joints or the connection of electrical equipment, unless the insulated conductors are intended to loop through lampholders, receptacles, or similar devices without joints.


7) Notwithstanding the requirements of Subrule 1), an outlet box shall not be required where provision for connection is integral to the equipment.

8) Notwithstanding the requirements of Subrule 1), an outlet box shall not be required for a switch or a receptacle conforming to Rule 12-3010 7).

9) Where a pendant ceiling fan and all possible accessories weigh less than 16 kg and are intended to be supported by a ceiling outlet box, the outlet box shall be marked for fan support.

10) Floor boxes shall be installed in accordance with the manufacturer’s installation instructions for the type of floor intended.

Source: Rule 12-3000, CSA C22.1:21, Canadian Electrical Code, Part 1 (25th Edition), Safety Standard for Electrical Installations. © 2021 Canadian Standards Association. Please visit store.csagroup.org