Calculate power, current, and voltage
Three-phase power is used in commercial and industrial settings because it's more efficient than single-phase for large loads.
P = Power (Watts)
V = Line-to-Line Voltage (Volts)
I = Current (Amps)
PF = Power Factor (typically 0.8-0.95)
Common voltages:
• 208V - Small commercial
• 240V - Residential/light commercial
• 480V - Industrial standard
• 600V - Heavy industrial
Power factor: Ratio of real power to apparent power. Motors and inductive loads have lower PF (0.8-0.85). Resistive loads like heaters are ~1.0. Use 0.85 if unsure.
How to use: Select what you want to calculate, enter the known values including power factor. The calculator uses the three-phase formula to find the missing value.