Appendix B Rule 12-3016 3) and 4)

Rule 12-3016 3)
The intent of this Subrule is that the installation of an outlet box requiring a wet location cover plate will be such that the box and cover are in intimate contact and will provide a seal to prevent ingress of water into the outlet box.

Rule 12-3016 4)
The intent of this Subrule is that a flush box, cabinet, or fitting be of a type approved for the intended location of installation (e.g., a flush box installed in a masonry wall should be approved for installation in a masonry wall; or a fitting installed in a wet location should be approved for wet locations).

Source: Appendix B Rule 12-3016 3) and 4), 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