Transfer Switch, 20 Amps, 120/240V AC, 1-Phase, Indoor, Surface Mount, Generator Input: 5.0 kW. Load/Circuit from Loadcenter: 20 Amps. Includes: 6 Circuits, Watt Meter, 20 Amp Power Inlet with NEMA L14-20 Receptacle, 18-inch Flexible Conduit Whip. Size: 7.50" x 7.00" x 4.50".