Originally Posted by Acableguy06
Barry, I thought most 50 amp campers are wired with most accessories on one of the hot legs and only the second A/C on the other leg. This is where the 15/30 cheater came into play so those could get the second A/C running.
IF this is still the case I don't think there would be an issue overloading the neutral.
I'm glad to see (in later posts) that you see the potential problem. I can't speak to "most campers", but in mine, both ACs are on the same leg, with much of the other "stuff" on the second leg. I agree with you that having <20 amps potential load on one of the legs also makes the problem go away. (That comes under the category of manually managing that you stay under 50 amps to me.)
How likely is this to happen? Lets assume that we have two electricians wiring up the campground. The Master electrician knows that the loads need to be shared between the split phases so he wires up the red wire to the hot of one of the 30-amp outlets and the black wire to the hot of the second 30-amp outlet. He wired up a few of the pedestals and then leaves the rest for the Apprentice electrician.
The Apprentice knows there's a color scheme that makes everything easy. On 50-amp outlets you connect up the Green, White, Red, & Black. On 30-amp outlets, you wire up the Green, White, and Black. Two 30-amp outlets in a box? No problem! They both get wired to the black (white & green).
Do you know which electrician wired up your pedestal? Only one way to know for sure.