Automatic Standby Generator, Fuel Type Natural Gas/Propane, Engine Cooling Air, Phase Single, Rated Voltage 240V AC, Running Wattage – Natural Gas (NG) 19.5 kW, Running Wattage – Diesel Not Applicable, Rated Current @ 240V AC – Natural Gas (NG) 81.3 A, Rated Current @ 240V AC – Diesel Not Applicable, Transfer Switch Included Yes, Transfer Switch Current Rating 200 A, Service Rated Transfer Switch Yes, CARB Compliant Yes, Overall Length 48 in, Overall Width 25 in, Overall Height 29 in Includes 200A Transfer Switch, Composite Standards UL 142/ULC SG01, UL/CUL 2200