When calculating amps on a double pole 220v breaker, is there an easy way to get a correct value? For example, for my stove I have a double pole 220v breaker that I have CT’s on both hots. One hot wire also feeds the 120v electronics of the stove (along with the neutral). So, when the stove is idle, the one leg reads 13 watts and the other is 0 watts. But, when it is in use, the 13w is 120v and the rest is 220 which results in a wrong calculation on one leg. I can just divide the watts by 220v on the second leg by 2 to get the amps, but for the first leg, the 13 watts needs to be divided by 120 and the rest needs to be divided by 220 and then divided by 2.
Basically, I am asking if there is a way for me to connect the CT’s to get the correct amps with mixed 120/220 volts on a breaker as in an appliance that uses both on one breaker. Do i need a new CT for the neutral wire to calculate?