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Old 05-05-2012, 10:01 PM   #1
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Can't plug in land power - Trips house breaker

Just got my 5'ver out of being mothballed for the winter (I know.. late... but we had twins last week lol). Everything seems to work fine when running on the 12V and gas. However, when I try to plug in the 110V line to my house line, it trips the breaker in the house (20A). I have tried turning off all the breakers in the trailer, and turned off all appliances/lights in the trailer. Still happens. Something is shorting out the main line coming in I'm guessing. Looking for some help on where to start troubleshooting.

TIA.
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Old 05-05-2012, 10:03 PM   #2
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Pull the converter main fuse and see what happens. If your battery is low it is also possible the converter is drawing more than 20A trying to charge the battery
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Old 05-05-2012, 10:30 PM   #3
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is the house outlet you're plugging into, a GFI outlet?
if so, i've heard this won't work.
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Old 05-06-2012, 08:40 AM   #4
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No, the outlet isn't a GFI. It's a normal 20A rated outlet. I'll try the main fuse and see what happens. Tks.
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Old 05-06-2012, 08:58 AM   #5
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Were you able to plug into the house with that same trailer last year?
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Old 05-06-2012, 09:28 AM   #6
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Turn off all of the 120 volt breakers in the trailer. Plug into the house receptacle. Turn on 1 breaker at a time in the trailer to see which circuit could be the problem.
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Old 05-06-2012, 12:49 PM   #7
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Pulled all the fuses, and turned off all the breakers, and still pops. I think my next step is I will open up the breaker panel and check the main power cable for shorts. Any other ideas?

And yes, this same trailer worked fine in the same outlet last year.
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Old 05-06-2012, 01:05 PM   #8
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Have you tried plugging into a different outlet? I have two outside outlets one is on the garage circuit the other is on the tv room in the house. Both 20a but the garage trips breaker.
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Old 05-06-2012, 01:23 PM   #9
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I have heard that a hot water heater with a shorted out element can still be shorting out without the breaker on.......don't know exactly how that happens, but maybe someone else can explain that. Maybe disconnect the element wires or the lead wires, and see if the breaker still trips ??
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Old 05-06-2012, 01:36 PM   #10
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Have you tried to unplug from the trailer and just plug the cord into the outlet. If it doesn't trip the breaker, you know the cord is good. If it trips the breaker, you know the cord has a short. If it trips, before I torn into the cord, I would try it in another outlet. If just the cord doesn't trip the breaker, and you have everything else turned off and all breakers off, I would suspect a short between the trailer plug and the main panel. Mice could have gotten into the wiring from the plug to the main box.
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Old 05-06-2012, 02:12 PM   #11
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Looks like it was a short Took apart the breaker panel, and it looks like in all the shakin, one of the GND bare copper wires had shook enough over to short against one of the mains. Once I re-organized the wiring in there, everything is peaches and rainbows!

Thanks for the help all.
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Old 05-06-2012, 02:13 PM   #12
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does your outlet look like this ? Click image for larger version

Name:	20 amp.jpg
Views:	160
Size:	13.5 KB
ID:	13322

if not then its only 15 amp outlet .
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Old 05-06-2012, 02:18 PM   #13
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Quote:
Originally Posted by DageonYar View Post
Looks like it was a short Took apart the breaker panel, and it looks like in all the shakin, one of the GND bare copper wires had shook enough over to short against one of the mains. Once I re-organized the wiring in there, everything is peaches and rainbows!

Thanks for the help all.
I think I would wrap the ground wires with black tape at least where there might be even a remote chance of them moving again. I have seen professional electricians wrap the back of outlets to prevent the possibility of shorting and shocking. That might be an easier solution.
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Old 05-06-2012, 04:54 PM   #14
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does your outlet look like this ? Attachment 13322

if not then its only 15 amp outlet .

Yes, that's the outlets I installed. And it runs 10/3 from the main breaker to the garage. I made sure I would have enough juice since I run my welder from there as well.

Cheers -
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Old 05-06-2012, 05:38 PM   #15
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Originally Posted by DageonYar View Post
Yes, that's the outlets I installed. And it runs 10/3 from the main breaker to the garage. I made sure I would have enough juice since I run my welder from there as well.

Cheers -
if you ran 10/3 then you could just install the normal 30 amp outlet your camper requires . 10/3 is 30 amp rated so why use the adapter
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Old 05-06-2012, 06:07 PM   #16
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Most welders are 240VAC not 120 VAC, so be very careful what you are doing. 240VAC will destroy the electronics and appliances in the trailer.

Also 10/3 is used for 240 VAC circuits. 10/2(with ground) is used for 120 VAC circuits.

Do you have a single or double breaker on this circuit? Single breaker is 120 VAC double breaker is 240 VAC.

Again, be very careful what you are feeding the trailer with!
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Old 05-09-2012, 09:56 PM   #17
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One thing to consider is whether your normal 20A receptacle in your house is protected from ground fault by a GFI circuit breaker in the breaker panel in your house. Does the breaker that tripped have a 'test' button on it? If so, it is a GFI breaker and you may have a ground fault problem in your trailer. I understand that it worked fine before--see my recent posts regarding my camper that is only three months old and having (possibly) a similar issue.
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Old 05-09-2012, 10:22 PM   #18
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Quote:
Originally Posted by RJHuser View Post
Most welders are 240VAC not 120 VAC, so be very careful what you are doing. 240VAC will destroy the electronics and appliances in the trailer.

Also 10/3 is used for 240 VAC circuits. 10/2(with ground) is used for 120 VAC circuits.

Do you have a single or double breaker on this circuit? Single breaker is 120 VAC double breaker is 240 VAC.

Again, be very careful what you are feeding the trailer with!
This is so true. More than one crying camper here who managed to fry every bit of electronics in his camper this way.

He did say it worked last year, so I think he is good to go now.
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Old 05-10-2012, 12:54 AM   #19
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Originally Posted by DageonYar View Post
Just got my 5'ver out of being mothballed for the winter (I know.. late... but we had twins last week lol). Everything seems to work fine when running on the 12V and gas. However, when I try to plug in the 110V line to my house line, it trips the breaker in the house (20A). I have tried turning off all the breakers in the trailer, and turned off all appliances/lights in the trailer. Still happens. Something is shorting out the main line coming in I'm guessing. Looking for some help on where to start troubleshooting.

TIA.
Twins as in new members of the family? Boys? Girls? One of each? Not sure how this news was missed but congratulations!
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Old 05-10-2012, 08:57 AM   #20
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If every thing checks out per the previous suggestions, what else is on that circuit ? Maybe something as simple as too much total draw on the circuit. For example - perhaps you have a new space heater plugged in that you didn't have last year. Could also be a "weak" 20 amp breaker in your house distribution panel, which is a simple replacement job.

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