A 30 amp plug has three prongs – a 120 volt hot wire, a neutral wire and a ground wire – and is generally used on RVs with lower load requirements.

Is RV 30 amp 120 or 240?

The 30-amp service for an RV is 120-volt with a 3 prong receptacle and a single 30-amp dedicated breaker. The 30 AMP is a standard ANSI C73. 13, TT-30P (plug) / TT-30R (receptacle).

Is an RV plug 120 or 240?

The plug on your RV is a large three-prong, heavy duty 30 Amp, 120-volt plug. Most campgrounds you go to will provide you with a 30 Amp outlet that your RV power cord will plug directly into.