Re: Calculating Heater Loads in Single Phase and Three Phase

Help me understand your question. Calculate what? Amps (given the applied voltage)? Voltage drop (given the amps and the cable type and length)? Service load (including demand factors, if any apply)? As to your second question, the answer is ?no.? Any 3-phase formula will resemble the corresponding 1-phase formula, but it will contain the square root of three (1.732) somewhere.