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Old 04-16-2016, 03:01 PM   #11
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It is not the house it is a combination of the house and the RV. GFI outlets monitor the power going out the hot lead and returning on the ground lead. If there is a very small difference the GFI assumes that the missing power is going to ground somewhere else and the GFI will trip. A GFI outlet also times the power out and will trip if it does not see the same power return on the ground lead within milliseconds. Switching power supplies like the converter in the RV will delay the current being returned on the ground lead. This is just the way they work and is not a problem. But the house GFI sees this as problem and will trip the home GFI. There is nothing wrong here and this is normal operation for both the RV and the home.
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Old 04-16-2016, 03:14 PM   #12
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It is not the house it is a combination of the house and the RV. GFI outlets monitor the power going out the hot lead and returning on the ground lead. If there is a very small difference the GFI assumes that the missing power is going to ground somewhere else and the GFI will trip. A GFI outlet also times the power out and will trip if it does not see the same power return on the ground lead within milliseconds. Switching power supplies like the converter in the RV will delay the current being returned on the ground lead. This is just the way they work and is not a problem. But the house GFI sees this as problem and will trip the home GFI. There is nothing wrong here and this is normal operation for both the RV and the home.

Awesome. Thanks for the help
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Old 04-16-2016, 04:05 PM   #13
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Actually, the description is right with one exception. GFIs monitor the current in the hot and the current in the neutral and if they are different by even a small amount...they trip! His GFI just might be bad as they do not last for ever.
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Old 04-16-2016, 05:27 PM   #14
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As I understand it you do not put twi GFI's on the same circuit it creates a fault.
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Old 04-16-2016, 07:34 PM   #15
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My camper gets plugged into a gfi on the side of my garage, and hasn't ever tripped. Although, I will be putting a 30a plug in this summer.


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Old 04-16-2016, 07:44 PM   #16
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Some GFI breakers do appear to be more forgiving than others. So sometimes with some RV's it will work, but with most newer RV's that I have seen it is a problem. It is best to feed the RV with a dedicated circuit that is not GFI controlled.
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Old 04-16-2016, 07:53 PM   #17
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One thing to check is the WH. If after the PDI, the electric element of the WH was left on and there was no water in the WH, the element would burn up. This will always cause a CGFI to trip if connected. May not be the problem, but it is worth a check before heading out on a trip.
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Old 04-16-2016, 10:13 PM   #18
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If service is a 50 a service in RV, you need to make sure you are not running a 220 into it but you have to run 2 110's. You need to make sure the 50 a is 2-110 plug with seperate grounds. If you try to run a 220 in you may have blown the inverter.
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Old 04-16-2016, 10:30 PM   #19
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Before having an RV outlet installed at home, better read these:

The 30-amp 120-volt 2 pole 3 wir

The 50-amp 120/240-volt 3 pole 4
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Old 04-17-2016, 04:13 PM   #20
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Update, I have since switched him to an outlet inside his house, non-gfci, working on shore power. The instant the cords are connected to the gfci it trips. Even though all the breakers inside the motorhome are off. No blown fuses, breakers seem fine. I believe it's his house??
Around my house there are a number of outlets that are daisy chain from the bathroom CGI. Is that what's happening to him also? If so plug in where the refrigerator is. That should not be a CGI
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