2013 Tpem Prime Power 275kw Gen Set Voltage: 277/480 3 Phase Why, 4 Wire Alternator - 60 Hz, 12 Lead Broad Range, 105c Electric Engine Governor, Emergency Stop Switch, 24 Vdc Motor Engine Starter, Engine Cooling - High Ambient Air Temperature, Engine Coolant- 50ntifreeze, 50aater Mixture Coolant Heater - 120 Volt Ac !