Machine description: 1991 US EPA Label, Cummins 380 hp 10 L Diesel Engine, 312.5 kVA/250 kW Rated 3 Phase Output, 120 V / 240 V / 480 V Rated Voltage, 120 V / 240 V Rated Voltage, Bottom Mounted Fuel Tank, T/A Trailer, Lu... more info about the Onan 250DFAC.