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Outdoor GFI keeps failing(not tripping)

Posted by av8r (My Page) on
Mon, Oct 3, 11 at 10:33

I have an outdoor gfi receptacle for outdoor low voltage submersable lights for a fountain. It was installed initially about 6 years ago and has been replaced about 5 times. I have a code keeper cover so I can leave the transformer plugged in. It typically trips a few times over many months(although not initially) and then eventually won't reset at all. I replace it and the whole process starts over again. There is no evidence of water or moisture inside the box and this last time I replaced it with an "outdoor weather resistant" gfi but still got the same results. Any suggestions? Is my transformer causing the gfis to fail?


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RE: Outdoor GFI keeps failing(not tripping)

Most likely just exposure and condensation.

GFCI devices rely on very small currents to sense the larger current imbalance between the hot and neutral.

A little dust and then some condensation upsets their operation.

The dust and moisture are inside the GFCI device and are not visible without taking it apart (and destroying it).


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