mydamcomputer
New member
What would be the largest single 3 phase size Breaker (load) allowed to be installed in a 3 phase 200a branch panel? where in the NEC does the refrence exist?:
I would disagree and say the largest is a 200. I don't see how you could put anything bigger than that if the feeder is not rated for it
That only means that the 200a main would pop first. As long as no conductor is unprotected, it's cool.I would disagree and say the largest is a 200. I don't see how you could put anything bigger than that if the feeder is not rated for it
That is, of course, manufacturer-dependent, and we've seen multi-contact take-off blocks that get around the usual per-stab current limitations. They're lug-only terminals that install like breakers, but make contact with more than one lug per phase.. . . I believe a 125 amp breaker is as large as one can put on a 200 amp panel buss for branch circuits on most brand panels. This is in the manufacturers info not the NEC
I think the op is asking what size breaker is allowed to be installed in a 200 amp panel.
I think he may be talking about branch circuit rather than a main feeder.
If this is the case I believe a 125 amp breaker is as large as one can put on a 200 amp panel buss for branch circuits on most brand panels. This is in the manufacturers info not the NEC
where in the NEC does the reference exist
What would be the largest single 3 phase size Breaker (load) allowed to be installed in a 3 phase 200a branch panel? where in the NEC does the refrence exist?:
What I was trying to say was that I thought he was talking about a branch circuit and not the main breaker.
.If it is a 200 amp panel then, of course the max. main breaker in that panel will not be greater than 200 amps
I agree, I am sure he is asking about branch or feeder breakers.
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I do not understand what the main breaker has to do with it at all.
I could have a 30 amp main breaker and a 100 amp feeder breaker as long as the calculated load was under 30.