Add an 11 HP engine and produce portable electric power! Brushless design for reliable performance and low maintenance. Packs 5000 continuous Watts. Delivers 41.7 Amps at 120 Volts, 20.8 Amps at 240 Volts. Has two 20 Amp, 120 Volt outlets and one 20 Amp 240 Volt locking plug outlet. Sealed roller bearings. Input shaft turns clockwise and counterclockwise. For horizontal application only. Engine Required: 11 HP or greater(3540-3720 RPM gen operating speed ), Shaft Diameter (in.): 7/8in. x 1 1/2in. Shaft has 3/16in. key way, Rated Watts: 5,000, Surge Watts: 5,500, Run Time: Continuous, Receptacles (qty.): 3, Phase: 1 (4 Wire), Dimensions L x W x H (in.): 16 1/4 x 7 1/2 x 7 3/4 Two 20 Amp 120V receptacles One 20 Amp 240V locking plug receptacle Uses NEMA 5-20R and NEMA L6-20R plugs 41.7 Amps at 120 Volts, 20.8 Amps at 240 Volts 100% Copper windings Brushless design, less than 6% Total Harmonic Distortion Bi-directional Thermal overload protection Conveniently located control panel Push button circuit breakers Plugs sold separately