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I have educated myself about gfci's although I am a diy'er. My gfci has my dock plugged into it. About once a year it trips and can't be reset only replaced. All outlets on the dock are weather proof. I am trying to find out if I need to rewire the dock or if the supply to the gfci can cause the tripping. This is a critical issue I need to resolve as I understand the implications of swimming near the dock if electrified. Again, I'm concerned that if I replace the dock wiring and the supply to the gfci is causing the tripping then I have to replace the supply side, not an easy task.

  • I can't narrow down a specific circumstance that causes the tripping. One time I did hear the gfci sizzle when I flipped the switch to supply power to the gfci. Couldn't be reset only replaced. – Troy Sullivan Jun 27 '15 at 12:04
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    Is this GFCI protected by some sort of weather proof cover in addition to being weatherproof itself? – mjohns Jun 27 '15 at 12:22
  • Gfci is weather protected – Troy Sullivan Jun 27 '15 at 13:21
  • I also installed a ground rod next to the gfci as well. – Troy Sullivan Jun 27 '15 at 13:24
  • This is still a little vague-- the GFCI can (and needs to be) be rated as Weather Resistant. In addition to using a Weather Resistant GFCI, you need a good weatherproof cover installed to protect the GFCI. – mjohns Jun 27 '15 at 13:29
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I have found that GFIs installed outdoors do not last nearly as long as indoors. Your issue is likely the constant proximity to water.

My suggestion is to install the GFI at a point in the circuit inside the house, or even install a GFI breaker.

  • Thank you for the quick reply! Will install a breaker and see what happens. – Troy Sullivan Jun 27 '15 at 12:23
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    Can a gfci breaker be installed in my indoor breaker box? – Troy Sullivan Jun 27 '15 at 12:25
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    @TroySullivan Yes, you'll install the GFCI breaker instead of the normal circuit breaker that is protecting this circuit. – Tester101 Jun 27 '15 at 12:51
  • My plan is to install a GFCI breaker on the line that runs to the dock and then I will add a switch at the dock that I can turn off and most of the time the switch will be off. if the GFCI breaker trips with the switch off then I know I have narrowed the problem down to something other than the dock. that's my plan – Troy Sullivan Jun 28 '15 at 2:12
  • @TroySullivan, that is a good approach. Is the line dedicated to just the dock? – Speedy Petey Jun 28 '15 at 12:08

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