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Old 06-05-2013, 09:02 PM   #1
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Blowing breakers

Hello. I need some help. My travel trailer keeps blowing the gfci outlet in my garage that I am trying to use. It is a 20amp circuit and nothing is running. I have used this last year with no problem but now I am having issues. I have narrowed it down to the circuit breaker on the trailer that runs the converter. If I flip off this breaker, the gfci does not kick out. Once I flip the breaker on, the gfci kicks out. It is at the dealer now but they say nothing is wrong with it. It is kicking due to using a gfci plug in my garage. They say I cannot use a gfci to power the trailer because the trailers gfci in the bathroom will conflict with the one I'm plugging into. None of this makes any sense. Something has to be wrong. I only have 1 month left on the warranty so I need help ASAP. As of now they are charging me $145 for troubleshooting. The warranty won't cover it due to them saying nothing is wrong. Please help... Thanks
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Old 06-06-2013, 12:39 AM   #2
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Sorry you in with problems, had the same issue with my 5er. Ended up ; after changing out the convertor , to no avail; ended up running a longer cord to plug to a non-GFIC circuit. Or re-setting the GFIC with the trailer plugged in would some times work.
In a post last week
Power problems by flashtilley
another member said to Google
rec/con, for discussions about the problem.
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Old 06-06-2013, 07:31 AM   #3
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Don't plug into a GFCI. It's not meant for it, and will trip it.
Use a real 30A outlet. Or replace the GFCI.
GFCIs interacting is not right, but other than that, they're right.
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Old 06-06-2013, 08:07 AM   #4
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In your s&b house, the ground is a real earth ground. It is connected to a copper rod driven into the ground or to your water supply pipe. That is what GFCIs are designed to deal with.

The GFCI measures the difference of the currents in the hot and neutral lines. Under fault conditions, some current will flow to ground, possibly through you. This results in less current in the neutral than in the hot, and the GFCI trips

In an RV, a true earth ground is not practical. The ground is often tied to the neutral, but it shouldn't be. That will cause the shore power GFCI to trip. If you have a multimeter, disconnect from shore power and check the resistance between the neutral and ground. It should be either open or at east 1 Mohm.

Joel
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