A distribution board rated at 63 amps 3 phase means that the maximum current you can draw from each of the three phases is 63 amps, but you do not multiply this by 3 for the total load. Instead, each phase can carry up to 63 amps independently. Calculating the kW Load To calculate the power (in kW) you can run on each phase, you can use the formula: Power (kW)=Voltage...