• dual_sport_dork 🐧🗡️@lemmy.world
    link
    fedilink
    arrow-up
    4
    ·
    11 months ago

    The correct answer, of course, is a transfer switch that physically decouples the backup power and the grid power from the building, and does not allow them to be connected at the same time – no matter how the operator might manage to fuck it up.