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Old 11-29-2015, 09:35 PM   #1
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30amp hookup

As I was camp host for a season, I would get this complaint that the pedestal breaker would blow because of the LP gas/electric water heater.

This weekend, my rig, a 50amp pig tailing to a 30 amp was throwing the breaker. It was also raining this weekend. Is there a fix? Maybe an additional ground on the hot water tank?
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Old 11-29-2015, 09:38 PM   #2
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After things dry out, cover the pigtail adapter where it adapts to the 50amp plug with plastic so that you don't any moisture on the connection. It works every time, when done right.
You may also want to add some Dielectric Grease to the connector also.
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Old 11-29-2015, 09:57 PM   #3
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Used vasolene (available) and dried everything. Still didn't work. even stretched to the next site pedestal, same results. Moved to a 50amp site had no problems.
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Old 11-30-2015, 03:59 AM   #4
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Is it a GFI breaker?
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Old 11-30-2015, 04:43 AM   #5
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You are running a 50 amp X 2 RV off of a 30 amp X 1 service.

Just to much draw.
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Old 11-30-2015, 05:17 AM   #6
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Keep in mind, 30 amps is 30amps at 120 = 3600 watts
50 amps is 50amps at 240 = 12000 watts.

Much more than twice the amount of power..
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Old 11-30-2015, 05:59 AM   #7
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Doesn't your coach have an energy management device? If it does, it should have shut off the power to the water heater before the breaker tripped.
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Old 11-30-2015, 06:35 AM   #8
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more info

I have a switch on the hot water tank and in the rig, also flipped the non used breakers, (IE)eng heat, air cond. water heater. The Ult Free has a power manager, and it sensed the 30 amp. I had power at that point, I tested the draw with the microwave, as soon as I turned it on, it tripped the GFI on the pedestal.
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Old 11-30-2015, 06:56 AM   #9
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If it trips the GFI (ground fault interrupt) that has nothing to do with the quantity of current it has to do with current leaking. A GFI measures the current that goes out on the black wire and compares with the current returning on white neutral, if they are not exactly the same then the circuits shuts off. You microwave may be defective and potentially dangerous. I would unplug it and try again to make sure...
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Old 11-30-2015, 06:59 AM   #10
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So you don't have a breaker problem !!

You have a 30 amp ? GFCI problem.

Very different.
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Old 11-30-2015, 07:00 AM   #11
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I do know in my coach, GIF outlets and refrigerator running on electric just don't mix. It trips the GIF.

I had a problem with my previous coach tripping the GIF. I found when the coach was built, the manufacturer put a screw right through a coax cable shorting the neutral and ground wires. The cable worked fine unless we were hooked to a GIF breaker protected outlet.
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Old 11-30-2015, 07:04 AM   #12
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Quote:
Originally Posted by HHIDan View Post
If it trips the GFI (ground fault interrupt) that has nothing to do with the quantity of current it has to do with current leaking. A GFI measures the current that goes out on the black wire and compares with the current returning on white neutral, if they are not exactly the same then the circuits shuts off. You microwave may be defective and potentially dangerous. I would unplug it and try again to make sure...
A GFI breaker will trip if it detects a ground fault. It will also trip, like a standard breaker, if you draw excess current. Can't assume it's a ground fault problem with the microwave.
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Old 11-30-2015, 07:31 AM   #13
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I'm just trying to understand the facts:

You have a 50A MH with a power management system like the one on my Itasca. You're using a dog bone for 30 to 50 amp. You're plugged into a 30 amp outlet and the circuit breaker trips. You state that the GFI on the pedestal is tripping. Question: The 30A CB is a GFCI? This would be rare. Is the 30A CB or the 20A CB tripping? I know when I plug my Itasca into a GFCI, it trips either from the Norcold refrigerator on electric and/or the WH on electric. I don't know which one causes it. I no longer plug into a GFCI outlet.
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Old 11-30-2015, 07:50 AM   #14
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In this state park camp ground, all circuit breakers on the pedestal are GFCI.
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