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Old 07-14-2013, 11:38 AM   #1
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Need replacement GFCI in main box

I just had an issue with my 92 LY MH. One day out of the blue I had no power at any of my outlets with either shore or genset power. I checked the breakers and the main GFCI breaker was tripped. I had seen this once before and simply reset the breaker at that time. Today the breaker will not reset. It trips every time I try to reset it. I disconnected everything including the fridge and still no reset. Measured the line and have no resistance between hot and common at the outlets. I took the fuse panel off and I think I found the source of the problem. If you recall I had a fair amount of rebuild work due to water damage. When I removed the GFCI breaker I found it to be wet and some water came out. The GFCI is the bottom breaker and was the only one that was wet. The box is dry and there doesn't seem to be any recent leaks. We have had a HUGE amount of rain over the last week and the humidity is VERY high. My guess is that this aggravated the already compromised GFCI. Now the problem is finding a replacement GFCI. Does anyone know where I can pick one of these up? Is this simply a common item that can be found at the local Home Depot?
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Old 07-14-2013, 11:45 AM   #2
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Yes, they are fairly common and HD or Lowe's should have them. Take your old one with you to be sure you get the right one as there are several different configurations of how they plug in. They are much more expensive than GFIC outlets, in the range of $50 or so.
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Old 07-14-2013, 11:54 AM   #3
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You can find them almost anywhere that sells electric supplies. When you go to get the replacement take the old one with you. Get an exact replacement. Do not let someone sell you one that "will work". If you replace it with a brand that does not match the brand of the panel box, and later you have a fire, insurance might say you caused the fire and bale out.
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Old 07-14-2013, 11:55 AM   #4
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Great! Thanks for the quick reply. I'll be heading to the local HD in a few minutes.
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Old 07-14-2013, 05:47 PM   #5
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OK, one small problem. The breaker that was in the MH doesn't have an amp rating. The largest that HD stocks in a single pole GFCI is 20 amps. Does anyone have an idea as to what rating it's supposed to be? I can't find any identifiers for the life of me.
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Old 07-14-2013, 08:00 PM   #6
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most i've seen have the number rating stamped into the edge on the on/off lever.
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Old 07-14-2013, 09:39 PM   #7
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30 amp normally.
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Old 07-15-2013, 07:32 AM   #8
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Quote:
Originally Posted by richinny View Post
most i've seen have the number rating stamped into the edge on the on/off lever.
Ya, that's what I've usually seen too, but this one has no markings at all.
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Old 07-15-2013, 08:14 AM   #9
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Look at the wiring.

15amp circuits tend to be 14gauge wire; 20amp circuits are 12gauge wire.

Even if the breaker is 20amp, the outlets themselves are probably 15amp outlets.
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Old 07-15-2013, 09:08 AM   #10
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My guess is it's a 20-amp breaker. Checking the circuit box I found that the wire coming into it is 12 gauge wire. Until now I never realized that all the outlets where tied together into one breaker. It powers virtually every outlet in the MH along with the fridge.
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