A 30 Amp plug has three wires, one for hot wire, one for neutral wire and one for a ground wire. A 50amp plug has four wires, two hot wires, a neutral wire and a ground wire.A 30 Amp plug has three wires, one for hot wire, one for neutral wire

What is a 30 amp electrical hookup?

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. A 50 amp plug has four prongs – two 120 volt hot wires, a neutral wire and a ground wire – that supply two separate 50 amp, 120 volt feeds.