Mercmaster III 250 KP Series Ballast Body, Lamp Type: 150 WTT 16000 LM Mogul High Pressure Sodium, Lamp Wattage: 150 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: 188 WTT, Amperage Rating: 0.85 AMP Starting, 0.72 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: 55 DEG C, Temperature Range: 90 DEG C Supply Wire, Ballast Type: High Reactance High Power Factor Autotransformer (HX-HPF), Ballast Quantity: 1, Frequency Rating: 60 HZ, Standard: AEx nA nR Rated, For Globe