Hi all. A simple electrical question (I hope).
I have a clamp on amp meter and I'm interested in seeing how much current is used at various loads by the feeder line running to my remote garage.
The feeder is has 2 hots and 1 neutral going to a sub panel that divides it into several 110 circuits.
I know that the current on the neutral will be the difference between the current on the two hots (less any stray current lost to the grounding rod), but I'm interested in knowing the 'total' amps of the 220 circuit.
I'm thinking I could measure the current on one hot, then on the other hot, and add the two values together. What I would like to do is install a permanent meter but now I'm thinking that I need two, one for each hot. If I try to measure the current by passing both hots through the 'clamp', since they are 180 degrees out of phase, won't they cancel each other out (and I would end up with the difference of the two like on the netural)?
So my long winded question is this - how can I use a single 'clamp-on' style meter to measure current on a 220vac circuit?
Thanks.