bulbs.com Fulham WorkHorse 6 Electronic Ballast, 277 Volt WH6-277-L

Fulham Brand WorkHorse 6 Electronic Ballast, 277 Volt, with Leads. Ten ballasts operate 132 lamps in 860 combinations. Ballast Lamp Starting Mode: Instant Start. WH6-277-L Fluorescent Ballast Ignites: Circline: One 20W - 40W, Two 20W - 22W, 40W T5 Circline: One 22W - 40W, Two 22W - 40W T5 Linear: Three F4 - F6, F14 - F35. Four F4 - F35 T5 HO: One F39HO - F80 HO, Two F24HO - F54HO, Three F24HO - F39HO, Four F24HO T8 Linear: One F14, Two F13 - F15, F18, F30, F58 - F70, Two F13 - F70, Three F13 - F40, Four F15 - F17, F25, F32 T8HO: One F48HO - F72HO, Two F48HO - F60HO, Three F72HO T10 Linear: One F40, Two F40 T12 Linear: One F14, One F20 - F96, Two F14 - F96, Three F15, Four F15 T12HO: One F18HO - F96HO Twin: One 13W - 55W, Two 5W - 50W, Three 5W - 11W, Four 5W - 11W Flat Quad: One 18W - 36W, Two 18W - 36W Quad: One 26W, Two 10W, Two 18W - 26W, Three 10W - 18W, Four 10W - 13W Triple: One 28W - 38W, Two 10W - 38W, Three 10W - 21W, Four 10W - 16W 2-D: One 28W - 38W, Two 10W - 38W, Three 10W - 21W, Four 10W - 16W