The relationship between power consumption (watts) and current draw (amps) in an electrical device. The most efficient ballasts and transformers have a High-Power Factor (max is 1.0). Low power factor devices require additional circuiting and larger wires.

The relationship between power consumption (watts) and current draw (amps) in an electrical device. The most efficient ballasts and transformers have a High-Power Factor (max is 1.0). Low power factor devices require additional circuiting and larger wires.