I'm doing some rewiring and have run into some confusion. I have a
240V circuit, which, when on shows about 240V on my multimeter. When I flip it's breaker, though, it shows some number of mV (instead of 0). This confused me.I mentioned this to someone else, and they asked what the amperage was when the breaker was off. Seemed like a good question. So I went and picked up a clamp meter that detects amperage. It showed 0. This seemed strange, so I called the company (Ideal) and they said I had to put a load on the circuit to detect any amperage. Ok, but that defeats the point...
Or does it? Maybe that it says 0A when the breaker is off, combined with a few mV means it's not a problem at all?