Corrosion protection for materials used in wiring

1) Metals used in wiring, such as raceways, cable sheaths and armour, boxes, and fittings, shall be suitably protected against corrosion for the environment in which they are to be used or shall be made of suitable corrosion-resistant material.

2) Where practicable, dissimilar metals shall not be used where there is a possibility of galvanic action.

Source: Rule 2-116, CSA C22.1:21, Canadian Electrical Code, Part 1 (25th Edition), Safety Standard for Electrical Installations. © 2021 Canadian Standards Association. Please visit