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Old 05-25-2009, 10:19 AM   #1
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50amp to 30amp

Hey folks...I am sure I am just an idiot asking this but, my Coleman popup is rated as a 30 amp unit. We are planning on doing some camping at CGs that only have 50 amp pedestals. Would the only thing that I would need be a 50amp to 30amp adaptor in order to hook up?

There's not any "amperage reducer", for lack of a better term, that I would need is there? Would there be any chance of overloading the camper's electrical system?

Thanks in advance!


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Old 05-25-2009, 10:47 AM   #2
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The adapter is the only thing you need.

No overload problem, current is drawn, not pushed. The adapter will use only one leg of the 220V outlet, giving you 110v @ 50 amps max. Your trailers 30 amp breaker will restrict that to 30 amps max.

Only way to overload is to put too big a draw, like maybe too many AC units, then the trailers' 30 amp breaker would trip.


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Old 05-25-2009, 12:27 PM   #3
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I don't know if this matters much to you, but I entered a campground about two months ago and hooked up the their 30 amp service. Like yours, my RV is 30 amp.

Within about 10 minutes I lost power with only my AC and fridge running (breaker at the box tripped). I knew everything was working fine when I left the day before so I figured maybe I wasn't getting true 30 amp service. I pulled out my 30 amp-50 amp adaptor, plugged into the 50 amp receptacle and didn't have a problem running my electrics for the length of my stay. Perhaps an electrician could expand on why that happened.

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Old 05-25-2009, 12:35 PM   #4
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Most likely cause was a weak breaker on the 30 amp circuit. They can get weak with age and especially if the get a lot of draw near the rated trip point.
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Old 05-25-2009, 02:33 PM   #5
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Thanks for the info Harold and others. You woulda thunk as a fire officer I shoulda known that current is drawn, not pushed...I'm still shaking off the effects of anesthesia from this past week and just had a "duhhhh" moment I guess...

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