30-amp service is more common in smaller RVs with fewer power-hungry appliances. 50-amp plugs have two 120-volt hot pins, a flat neutral pin, and a round ground. A 30-amp RV can handle up to 3,600 watts; a 50-amp RV puts you up to 12,000 watts, so the increase in power is quite substantial.

Is 30 Amp or 50 Amp better for RV?

A 50 amp service RV provides a maximum 12,000 watts. Even with an adapter, your 30 amp service RV wont receive more power than the 3,600 watts it can handle. Conversely, if you use an adapter for a 50 amp RV, youll be limited to 3,600 watts.