• Cethin@lemmy.zip
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    2 days ago

    GFCI has a switch that is tripped if there’s a leak of power. It’s the outlets that have a test button between the two plugs. It essentially is just an outlet with a breaker that is tripped if it’s shorted so it can’t cause any harm. Basically, if the incoming current isn’t the same as the outgoing current, it trips and shuts off power.