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Old 08-05-2013, 11:41 AM   #15
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Originally Posted by janeinthemtns View Post
What do I look for in a heavy duty extension cord? I've got a long one that I use to run electricity upstairs during the summer in the old adobe house.
I'm no electrician, but I have been advised for safety, on several construction sites, not to use an extension cord of a smaller gauge than the cord I'm plugging into it.

By that reasoning, the best thing is to pick up up a 30-amp extension cord. I got mine at Cabela's. Using a 30-amp extension cord (with 30-amp plugs) you can also use it at older campgrounds where the electric service is inconveniently located. Or with a generator when you want the generator to be set far, far away for noise or exhaust fume control, even when you're not using a 20-amp adapter.

And you can still use the 30-amp extension cord at home by connecting the adapter to the far end of the extension cord where it goes into the 20-amp service.
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Old 08-05-2013, 05:46 PM   #16
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If the PO has replaced the original converter with a new smart converter then you don't even need to have batteries as they are regulated but you would be relying on the TV for 12VDC power while towing.
Actually if you are going to tow you need a battery (by law in many, possibly all states) to operate the electric brakes by the breakaway switch on all trailers with electric brakes.
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Old 08-05-2013, 06:14 PM   #17
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Several more things to consider...

1. Whichever extension cord (the orange outdoor types are OK for gentle battery charging, but never for A/C..) be careful if you run them coiled around a drum or reel.. Too much current in a coil shape and they overheat and melt insulation, and smoke begins to escape.. <ask me how I know..)
2. On the Excella 25, there is unlabeled switch in cabinet over stove hood. It switches 110V power between A/C plug and outlet for plug for microwave over refrigerator.. Both plugs can't be "hot" at same times, as microwave plus converter plus A/C will overload capacity of main circuit breakers <Ask me again...>
3. It's OK to leave original converter plugged in and charging batteries for a day or two at a time.. Older chargers will boil/cook batteries dry if left plugged in for several weeks, especially in warm weather... < Yup, go ahead and ask...> New 3 stage charger/converters are better...
4. Driving without batteries very bad idea (see note above about brakes..). Also risky to assume tow vehicle will charge batteries with leftover current from alternator.. Worse case is that trailer can overload and cause alternator failure, and brakes won't work either... < Do you need to ask??>
5. As also noted above, A/C needs a full shot of close to 30 Amps to kick over compressor at beginning of cooling cycle, depending on age of unit, brand, rating or load, etc.. If you try to run A/C on less power, it may turn over and fan may blow, but you can damage compressor system and ultimately need new A/C.... < And yes, we have 30 A dedicated circuit now at the house where our 88 Excella now lives with us..>

Good luck with your great new trailer...
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