Single Phase Power Equations

Single phase electrical power equations

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Some common single phase power equations can be expressed as

Real Power

Wapplied = U I PF / 1000         (1)

where

Wapplied = real power (Kilowatts)

U = voltage (volts)

I = current (Amps)

PF = power factor - 0.7 - 0.95

Total Power

W = U I / 1000         (2)

Break Horsepower

WBHP = U I PF μ / 746         (3)

where

μ = device efficiency

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Related Topics

  • Electrical - Amps and electrical wiring, AWG - wire gauge, electrical formulas, motors and units

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