Rule 2-100

Evidence of approval may consist of either of the following:

a) the certification mark of the certification agency, usually in the form of a monogram or seal of that agency; or
b) the special inspection label or document of the authority having jurisdiction.

Source: Appendix B, Rule 2-100, CSA C22.1:21, Canadian Electrical Code, Part 1 (25th Edition), Safety Standard for Electrical Installations. © 2021 Canadian Standards Association. Please visit