convert horsepower to amps
Volts x amps = watts and 746 watts = 1 horse power. Working backwords however from horsepower to watts you need to take into account motor efficiency. HP*746/efficiency = electrical power input. Most home use motors are in the upper 80 or low 90% range. High efficiency industrial motors are more like 97 or 98% efficient. P.S. this is all for single phase power.