• JustEnoughDucks@feddit.nl
      link
      fedilink
      English
      arrow-up
      2
      ·
      5 个月前

      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
      ·
      5 个月前

      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.