• fullsquare@awful.systems
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    4 days ago

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

      • frezik@midwest.social
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        3 days ago

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

      • fullsquare@awful.systems
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        3 days ago

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

        that, or copper clad aluminum