Although a 50 amp service for a recreational vehicle, or RV, is connected to four wires and uses a four-prong plug, it is still a three pole service with only hot, neutral and ground connections. It is different from a conventional 120 volt service in that there are two 120 volt hot feeds, or legs, each at 50 amps.

What kind of wire do I need for a 50 amp RV plug?

You should use the No. 4 AWG size for a 50 amp wire. This is the best size wire for 50 amp Rv service. Whether you have a 30 amp, 40 amp or a 50 amp breaker, wire size is essential.

Can 6-gauge wire handle 50 amps?

For a maximum of 50 amps, youll need a wire gauge of 6.