Compact, brushless generator has low 5% or less total harmonic distortion — safe for computers and TVs! Takes an 18+ HP engine for rated output: 10,000 surge Watts and 9600 continuous Watts. Generates 120 and 240 Volt power simultaneously. Input shaft turns clockwise and counterclockwise. Voltmeter. For horizontal application only.Engine Required 18 HP or greater (3480-3780 RPM gen operating speed) Shaft Diameter (in.) 28mm x 2.38in. input shaft; 8mm x 1.75in. key way Rated Watts 9,600 Surge Watts 10,000 Run Time Continuous Receptacles (qty.) 6 Phase 1 (4 Wire) Dimensions L x W x H (in.) 19 1/2 x 14 1/4 x 9 Additional Product Specs * Four 20 Amp 120V receptacles * One 30 Amp 120V locking plug receptacle * One 50 Amp 120/240V straight blade receptacle * Uses NEMA 5-20R, NEMA L5-30R and NEMA L14-50R plugs * 80 Amps @ 120 Volts, 40 Amps @ 240 Volts * 100% Copper windings * Brushless design, less than 5% Total Harmonic Distortion * Bi-directional * Thermal overload protection * Conveniently located control panel * Push button circuit breakers * Plugs sold separately