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.

Is a 50 amp RV Service 110 or 220?

A 50 Amp RV plug is 220 Volts if it has four prongs on the male and female plug. Two being 110 Volt to neutral or ground and one prong being the neutral and the round prong the ground. The voltage between the two 110 Volt prongs should be 220 Volts.

How much does it cost to run a 50 amp RV?

Many factors play into a true 50 amp service with the length of the run being primary. Figure $3-$4/foot for the wire (anywhere in the U.S). $60 for the outlet/service box to plug in to, $50-$100 for breaker at service panel & misc.