Mercmaster III 250 KP Series Ballast Body, Lamp Type: 175 WTT 17500 LM Mogul Pulse Start Metal Halide, Lamp Wattage: 175 WTT, Voltage Rating: 120/208/240/277 V, Number Of Lamps: 1, Material: Copperfree Cast Aluminum (Less Than 4/10 Of 1 PCT) Mounting Hoods, Fixture Wattage: 199 WTT, Amperage Rating: 0.3 AMP Starting, 0.76 AMP Operating At 277 V, Housing Finish: Epoxy Powder Coat, Housing Material: Copperfree Cast Aluminum (Less Than 4/10 Of 1 PCT), Ambient Temperature Range: 65 DEG C, Temperature Range: 105 DEG C Supply Wire, Ballast Type: Super Constant Wattage Autotransformer (S. C.W.A.), Ballast Quantity: 1, Frequency Rating: 60 HZ, Standard: AEx nA nR Rated, For Globe