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International Automotive Technicians Network
Re: GFI 20 amp outlets
Posted to Open Discussion Forum on 5/24/2020

I added GFI to my 1965 house. It works on the concept of stay current. It measures the current going into the device and the return current coming back on the white wire. If they don't match it clicks off. So sparking in the motor that can reach the ground wil... Login to read more.