Bonding of receptacles (see Appendix B)

1) Where grounding-type receptacles are used in existing installations to replace the ungrounded type, the grounding terminal shall be effectively bonded to ground and one of the following methods shall be permitted to be used:

a) connection to a metal raceway or cable sheath that is bonded to ground;
b) connection to the system ground by means of a separate bonding conductor; or
c) bonding to an adjacent grounded metal cold-water pipe.

2) Notwithstanding Subrule 1), at existing outlets where a bonding means does not exist in the outlet box, grounding-type receptacles shall be permitted to be installed, provided that each receptacle is protected by a ground fault circuit interrupter of the Class A type.

3) A bonding conductor shall not be extended from any receptacle protected by a ground fault circuit interrupter of the Class A type in accordance with Subrule 2) to any other outlet.

Source: Rule 26-702, 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