The Sola E-758-U-432-SC electronic fluorescent ballast operates (4) F32T8 lamps at 120/277 input volts. Ideal for use in normal light areas, this instant start ballast is typically used in offices, board rooms, and retail. Also operates F17T8, F25T8, and F32T8/U fluorescent lamps. This ballast is rated for outdoor usage and an input wattage of 113 watts.