Electrical Formulas
| To Find | Alternating Current | |
|---|---|---|
| Single-Phase | Three-Phase | |
| Amperes when horsepower is known | HP x 746 E x Eff x pf | HP x 746 1.73 x E x Eff x pf |
| Amperes when kilowatts are known | Kw x 1000 E x pf | Kw x 1000 1.73 x E x pf |
| Amperes when kva are known | Kva x 1000 E | Kva x 1000 1.73 x E |
| Kilowatts | I x E x pf 1000 | 1.73 x I x E x pf 1000 |
| Kva | I x E 1000 | 1.73 x I x E 1000 |
| Horsepower = (Output) | I x E x Eff x pf 746 | 1.73 x I x E x Eff x pff 746 |
I = Amperes; E = Volts; Eff = Efficiency; pf = Power Factor; Kva = Kilovolt-amperes; Kw = Kilowatts
