voltairzap
Member
We have an installation to connect a three phase water heater. the unit has two 4500 watt elements inside. We are to connect three legs of the incoming three phase with the center leg connected as a "common" between the two elements. What is the calculated amperage load for each leg if operated at 208 volts?
If this were single phase, then the center leg would be the sum of the other two legs. But with three phase power, shouldn't the "three phase factor" (1.73) be involved in the calculations for the "common" conductor?
John
If this were single phase, then the center leg would be the sum of the other two legs. But with three phase power, shouldn't the "three phase factor" (1.73) be involved in the calculations for the "common" conductor?
John