How to calculate amperage from wattage To calculate the current or voltage from power, we first need to know the circuit type, i.e., AC or DC. Then we can use one of the formulae given below to convert watts to
To convert amps to kVA in a single-phase power system, you can use the formula S = I × V / 1000 where the amperage (I) is in amperes, the voltage (V) is in volts, and the resulting apparent power (S) is in kilovolt-amperes or kVA. On the other hand, for the 3-phase syste...