The standard RV 50 Amp wire connection has two hot legs, one ground pin and one neutral pin.
Each hot leg reads 120 volts to neutral. That is how you use it.
Each hot leg reads 120 volts to ground. That is for safety.
Each hot leg reads 240 volts to the other hot leg. That is only for reference. You don't use it, but you check it. If it is not that way, you could fry the neutral with unbalanced loads.
Neutral and ground are connected at the service entrance only, as far as the park or your house goes.
As a general rule, one leg of the 50 amp service runs all of the coach except for the rear air conditioner, which is powered by the other leg.
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Frank & Pam LeCross
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