Just to confirm my thinking, on a 208v 200a 3ph service, (providing the wire is the correct size), is good up to 200amps per phase measured with an amp clamp. But the total would not be 600 amps, correct?
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If you have 200A being drawn on each phase, then no, you can't really say that the total is 600A because of the 120-degree phase difference between phases. That same phase difference is the reason why if you have exactly the same current flowing on each phase then the neutral current will be zero.
Re: 3 phase amperage#14705 09/30/0212:52 AM09/30/0212:52 AM
I would say that you are correct, it depends upon the size of your protection on the circuit and the cable size. You would think that you could directly add the line currents together, unfortunately, this not so, .