Electrical Problems-Need your help

Everything in most RVs is 110V. Unless you have a European RV, you should NOT have 220-240 volts ANYWHERE! 30 or 50 amp or not. Depending on the wiring, there could be 240 V between the two hot pins on your plug, but nowhere else. There are generally two circuits in a 50A RV. one from each side of the line. Both are 110-120V, usually with two ACs there is one AC on each circuit. You have probably popped a circuit breaker somewhere. Mine has two breakers on the generator, plus two on the breaker panel inside. At the campground pedestal, many older systems just have one big 120v line to the pedestal, and it is split to both sides of the plug.