These energy-efficient Fulham Pony model
NPY-120-226-CFL electronic ballasts are available 50 per case from
Warehouse-Lighting.com. Fulham’s energy-efficient electronic fluorescent
ballasts operate two 18/24/27-watt twin tube, 26-watt quad tube or 26-watt
triple tube lamps at 120 input volts. With an increased light output ballast
factor of 0.991 to 1.058, the power factor is 0.569 to 0.597 on Fulham’s
economically priced Pony utility ballasts. These ballasts for compact
fluorescent lamps carry a three-year manufacturer’s warranty.