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Old 07-30-2013, 07:39 AM   #1
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GFCI at storage fails

We had successful run. All worked in each campground, never tripped GFCI.

we get home, for first time I plug in 50-30 pigtail adapter. Next I plug on 30-15 AMP.

Next, I plug into our storage facility, 15AMP. No problem.

Finally, I go inside and power up the MAIN, no power. So I head out to find the GFCI popped. Hmmm.

I turn off the MAIN and GFCI resets fine. Hmmm

Rather than continuing to pop GFCI I will need to diagnose a bit.

So here we go.. Any thoughts on cause?

Thanks in advance!
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Old 07-30-2013, 07:44 AM   #2
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BTW... I did "bond" the breaker box.

Our easiest test is to flip one breaker at a time to isolate faulting circuit.

Till then all power off!.. in storage..so go carefully!
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Old 07-30-2013, 08:13 AM   #3
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GFCI at storage fails

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Originally Posted by cwf View Post
Finally, I go inside and power up the MAIN, no power. So I head out to find the GFCI popped. Hmmm.
I'll preface my remarks by saying, I'm not an electrician. But as a safety coordinator at work, I deal with GFCI on a semi-regular basis under a variety of working conditions.

One thing to check in particular, does your service entrance GFCI trip when the interior GFCI breaker is thrown?

At a number of construction sites I've had occasion to visit for work, it doesn't happen every time, but when you've got two GFCIs in series— a GFCI circuit plugged into a GFCI source— the upstream GFCI (closest to the source) can register the other GFCI as a fault, and trip.

As long as you've got GFCI circuits inside your trailer, you don't need to plug the trailer into a GFCI-protected source. It's overkill, and it may actually be what's killing your power.

Side note, a GFCI that trips hasn't "failed." A GFCI that trips works.
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Old 07-30-2013, 08:57 AM   #4
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I'll preface my remarks by saying, I'm not an electrician.........

Side note, a GFCI that trips hasn't "failed." A GFCI that trips works.
Agreed! It does NOT fail! It would be BAD for it to FAIL, especially at wrong time. !!!!!

If I said "failed" I FAILED!
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Old 07-31-2013, 02:23 PM   #5
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"Problem solved"!!!!

Dang "overachievers" non-anonymous !!!!!!


Removed "bonding screw" from new breaker box and it's tickin' chikin'!!!!!
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Old 07-31-2013, 02:54 PM   #6
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I had the exact same problem. turned out to be my univolt, which I replaced with a PD9245 and never looked back (<$200 and a few hours of fiddling)

ETA: to test this, unplug your univolt and run an extension cord from the storage pole directly to the univolt AC plugin, if it trips, you just found the problem
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Old 07-31-2013, 04:19 PM   #7
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I had the exact same problem. turned out to be my univolt, which I replaced with a PD9245 and never looked back (<$200 and a few hours of fiddling)

ETA: to test this, unplug your univolt and run an extension cord from the storage pole directly to the univolt AC plugin, if it trips, you just found the problem
I replaced my original converter as well!

Thanks for advice, if problem "comes back" I will verify as you suggest!
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Old 07-31-2013, 04:38 PM   #8
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glad you found the issue and that it was a free fix! those are the best!
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Old 08-01-2013, 11:50 AM   #9
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glad you found the issue and that it was a free fix! those are the best!
Agreed!

Once removing the "bonding" screw it behaved properly! I usually bond for safety but mounted inside the AS probably over cautious!
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Old 08-01-2013, 10:16 PM   #10
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If by bonding, you mean connecting the ground and neutral busses in the trailer.

DON'T DO IT!!!!!

Here is one explanation.
120 VAC in your RV
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Old 08-01-2013, 10:20 PM   #11
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If by bonding, you mean connecting the ground and neutral busses in the trailer.

DON'T DO IT!!!!!

Here is one explanation.
120 VAC in your RV
Yup. Learned without killing anyone. I am blessed as God takes care of fools and kids!!!
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Old 08-01-2013, 10:22 PM   #12
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Yup. Learned without killing anyone. I am blessed as God takes care of fools and kids!!!

Good thing!!
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