Quote:
Originally Posted by JRTJH
if you plug the 30 amp shore power cord into a 50 amp outlet on the campground power pole, once you turn on enough "stuff" in the trailer to draw 30 amps, everything will work as designed.
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Absolutely. 40 years ago, I had a power engineer explain it to me this way, and I've remembered this analogy ever since to keep my head straight on this issue:
The average lamp in your home has 14ga wire, which is rated only for 15A. You routinely plug them into house outlets that are rated and fused to supply 20A. This is NOT a violation of code or good practice, because the lamp is never going to draw more than some fraction of 15A. Yes, there is a fire danger if some adverse event physically shorts the lamp cord, but that's not considered a normal event. (Especially since it would have to be shorted in such a manner as to consume more than 15A but less than 20A, which is highly improbable.)