What is Power Factor?

- Jun 28, 2019-

Power factor is a measurement of the efficiency of the ballast in terms of the ratio of wattage entering the lamp and the wattage entering the ballast. The closer to 1 the power factor is, the more efficiently the ballast is working. Above a .70 power factor is considered a High Power Factor. Between .50 and .70 is a Normal Power Factor. The THD is higher with a normal power factor.