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Two Bad GFCIs

jmauld

Well-known member
Joined
Feb 13, 2005
Messages
672
Location
NC
I'll admit upfront that I don't do the monthly GFCI test, but I do remember testing both GFCIs this spring.

I have two circuits dedicated to receptacles in my garage. This evening I found that one circuit was completely dead when I tried to use it. I tried resetting the GFCI and it didn't respond. I measured the voltage on the input of the GFCI and I've got 125 V between L and N and 125 V between L and GND.

I went to the other circuit and tested the GFCI on it, and it won't respond to pressing the "TEST" button. But, it is allowing power through to the other receptacles.

I'm planning on buying two new GFCIs tomorrow, but is there anything that I should check before I do that? It seems a little odd that these would both fail within a 3-4 month period. Unless maybe a surge took them both out?
 
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e-tek

Well-known member
Joined
Dec 19, 2007
Messages
10,690
Location
Saskatoon, SK
I've had some MAJOR issues with these things! First off - is power supposed to flow through them if they won't trip? It says in the instructions - and I've heard from electricians - that if one is blown, the ones down the line won't have power. Sometimes you may think one is bad, but it can be another one on the same circuit.

I've also seen where these will have power to them (green light on), but give no power. This was due to the nuetral (white) and power wires being reversed. Now I always say: Power always goes to large spade side.
 
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Milton Shaw

Well-known member
Joined
Feb 11, 2011
Messages
4,868
I have seen GFCI's wired in new homes with down stream wires hooked to line connection so each outlet after GFCI was not off if GFCI tripped. In other words to protect garage/ bathroom each outlet was a GFCI, more money but less things are off in garage such as freezer's. That's probably the way I would do new construction for myself.
 
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