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How a GFCI outlet works

How a GFCI outlet works

BrainStuff

October 3, 20080m 22s

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Show Notes

A normal 120 volt outlet in the US has two vertical slots and a role hole centered below the slots -- the outlets with a pair of red and black 'test' and 'reset' buttons are known as GCFI outlets. Check out this HowStuffWorks podcast to learn more.

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