• JustEnoughDucks@feddit.nl
        link
        fedilink
        English
        arrow-up
        2
        ·
        1 年前

        It’s AC. Polarity doesn’t generally matter.

        Bridge rectifiers are also not polarized to convert AC to DC.

      • rtxn@lemmy.world
        link
        fedilink
        English
        arrow-up
        1
        ·
        1 年前

        In terms of physics, AC doesn’t have polarities. Treat both the live and the neutral wire as if it were live. You don’t know what kind of psychopath wired the building.