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naraiz 12-20-2008 09:16 AM

Power outage, tripped GFI?
Hello! My first post on this forum. An interesting thing happened last night. While we were sleeping the power went out (which I don't think is unusual in of itself). The interesting part is a GFI socket next to kitchen sink was tripped. My question is: Is it common for a GFI to trip when power goes out or is restored? I'm rationalizing the trip would happen when power is restored and a surge of some sort happened. Yes?

Thank you,


triple D 12-21-2008 03:20 PM

You are correct...
Was there any lightning? Often that will upset things, or a wind storm. If you get a reduced voltage, or brown out, it will often let go of contacts and trip.

ffemt6347 12-24-2008 05:53 AM

A GFCI checks Voltage/Current difference between the hot leg and the neutral. If there is a minute difference between the two (usu. in the mV range) it will cause it to trip. This is not common, but does happen occasionally with power outages and brownouts.;)

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