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ELECTRICAL FORMULAS
To Obtain |
SINGLE PHASE |
THREE PHASE |
| Kilowatts | V x l x pf |
1.732 x V x l x pf |
| kV•A | V x l |
1.732 x V x l |
| Amperes (kW known) |
kW x 1000 V x pf |
kW x 1000 1.732 x V x pf |
| Amperes (motor hp known) |
hp x 0.746 V x pf x Efficiency |
hp x 0.746 1.732 x V x pf x Efficiency |
| Amperes (kV•A known) |
kV•A x 1000 V |
kV•A x 1000 1.732 x V |
| Horsepower (kW unknown) |
kW 0.746 x Efficiency (Generator) |
kW 0.746 x Efficiency (Generator) |
| Horsepower (generator efficiency unknown) |
kW 0.746 x 0.93 |
kW 0.746 x 0.93 |
| kW input (motor hp known) |
hp x 0.746 Efficiency (Motor) |
hp x 0.746 Efficiency (Motor) |
| kW input (motor efficiency? unknown) | hp x 0.85 | hp x 0.85 |