Recreational Vehicle / Travel Trailer / Camper 30 AMP 3-prong TT-30 male plug. 2 of Receptacles for Generator 20 AMP 5-20 3-prong female connector. Also can use on Household regular 3-prong 15 AMP NEMA 5-15 female receptacle connectors. Molded with electroplate copper terminal in order to avoid surface oxidation effectively. AC Power Adapter with Lighted TT-30P to 5-20R*2 ( or 5-15R*2) 125Volt / 3750 Watt. 1 piece Heavy-duty power adapter for generator, 100% copper conductor inside.