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  • 10 months

    only residential wiring uses copper, everything from 350kV down to 400V lines is aluminum, and even in houses aluminum can be used too

      • 10 months

        From old electrical connections that weren’t designed for the different rates of expansion of aluminum and copper. Today, most of them are.

      • 10 months

        this was before we figured out that you can use stranded aluminum wire and it’s fine this way

        that, or copper clad aluminum