Power Factors of Some Common Types of Loads Load Power Factor Load Power Factor Incandescent lamps 1.00 Arc Furnaces 0.85 Arc Lamps used in cinemas 0.3 to 0.7 Induction furnaces 0.60 Neon signs 0.4 to 0.5 Arc welders 0.3 to 0.4 Fluorescent lamps 0.6 to 0.8 Resistance welders 0.65 Induction heaters 0.85 Induction Motors 0.8 Resistance Heaters 1.0

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