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Old 12-20-2008, 10:16 AM  
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Default 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?

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Old 12-21-2008, 04:20 PM  
triple D
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Default 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.
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Old 12-24-2008, 06:53 AM  
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Default GFCI Trip

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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