For connecting generator output receptacles and either Reliance Raintight™ power inlet box or transfer switches with appropriate power inlets. Four conductor 120/240 Volt. Sturdy, all-weather construction. UL listed. U.S.A.Amps 30 Length (ft.) 10 Volts 120/240 Watts 7,500 UL Listed Yes L14-30 locking plug/connector