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Old 11-16-2007, 09:41 PM   #1
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1959 24' Tradewind
Fuquay Varina , North Carolina
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Circuit Breakers Tripping

Please lend me your electrical expertise!

59 Tradewind that is wired for 110 and has a 30A shore power inlet, Marinco 30A twist lock. Using Marinco shore power cord that I put a new 30A straight male end on in order to plug into 30A campground power without an adapter. I want to use a 15A adapter to plug into power at the house, but when I plug in to the house's 15 A circuit for the exterior outlets, the 15A breaker trips. This is with nothing on, even have the trailer brakers off. Just plugging in trips the circuit. Why would this trip a 15 A circuit when it can't be pulling anything? It will work when I plug into a larger house circuit(20A) it doesn't trip.

Any ideas would be appreciated.

Bob Garver
Raleigh, NC
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Old 11-16-2007, 09:45 PM   #2
More than one rivet loose
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hot and Neutral or ground reversed.
Michelle TAC MT-0
Sarah, Snowball

Looking for a 1962 Flying Cloud

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Old 11-16-2007, 11:52 PM   #3
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colorado springs , Colorado
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theres a possibility that there could be something wrong with that 15A house circuit. But more than likely, theres a load somewhere in the trailer that exceeds 15Amp. Anything with a motor will draw a lot of current when it fires up.

You can get a curcuit tester at home depot, or wall mart for a few bucks. Its basicly a 3 prong plug with 3 lights in it, and a chart on the top that tells you what the lights mean.

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The super-fancy ones have button on top to test GFCI circuits.
These are handy to have at strange campground to make sure their box is wired right and will help find out if theres anything wrong with the house circuit.

I almost dont want to recomend the following because, as a rule, Breakers usually trip for good reasons. In other words, they are a safety device and not a testing tool.
But you could turn off all the breakers in the breaker box in the trailer, then plug the trailer into the 15A circuit in question.

If the house breaker still trips then you are either looking at Ground/hot or neutral reverse like thecatsandi mentioned, or a big appliance thats not wired into the trailer breaker box Both of these are could be dangerous. The former because your in a metal can, the latter because that means someone wired something in where they shouldnt have.

If the house breaker does not trip, then you could start turning on the trailer breakers untill it does.
That will at least give you an idea of which circuit the load is on.
Champagne wishes and Caviar dreams!
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