Dec 19, 2019 · Using the formula (V * I * Eff)/746=HP, determine your electric motor’s horsepower. Multiply the voltage, the current, and the efficiency, then divide the result by 746. For example, the horsepower of a 230v motor pulling 4 amps and having 82% efficiency would equal 1 horsepower.
How to Convert Horsepower (metric) to Kilowatt. 1 horsepower (metric) = 0.73549875 kW 1 kW = 1.3596216173 horsepower (metric) Example: convert 15 horsepower (metric) to kW: 15 horsepower (metric) = 15 × 0.73549875 kW = 11.03248125 kW. Popular Power Unit Conversions I can't seem to make the numbers come out converting the HP formula (ft-lb x rpm/5252) to KW (N-m x rpm/9549). If I substitute .746kw for hp and N-m/.74 for ft- KW to HP Formula Conversion - Electric motors & generators engineering - Eng-Tips