Appleton Mercmaster II 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 (4/10 Of 1 PCT Maximum) Aluminum 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 (4/10 Of 1 PCT Maximum) Aluminum, Ambient Temperature Range: 40 DEG C, Temperature Range: 90 DEG C Supply Wire, Ballast Type: High Reactance High Power Factor Autotransformer (HX-HPF), Ballast Quantity: 1, Standard: Class I, Division 2, Groups A, B, C, D, Class II, Division 1 And 2, Groups E, F, G, Class III, UL Listed: E10444, 1598, 1598A, 844, For Globe Or 12 IN Refractor