Aluminum Wiring in Canada
Between the late 1970s and the early 1980s, electricians and other contractors used aluminum wiring in Ontario to construct new homes. It was an approved home wiring method. Also, it was a more affordable option than copper.
By the late 1980s, this home wiring practice became obsolete. All related home devices compatible with aluminum were slowly phased out. Today, these devices with aluminum ratings are virtually non-existent. If at all available, they usually come overpriced.
https://langstaffandsloan.com/aluminum-wiring/
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