There would be no violation in supplying say a 160 amp load from a 400 amp breaker installed in a panel supplied by 200 amp feeder.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
Yes that is what they asked.I think the op is asking what size breaker is allowed to be installed in a 200 amp panel.
That really does not matter.I think he may be talking about branch circuit rather than a main feeder.
I kind of mentioned that already but he asked for the NEC reference. :smile: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
200 amp, 42 circuit panel. I am sure there is a manufacturer that has something weird. I think the largest 3 phase plug ion I have seen is 100 amp.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 agree, I am sure he is asking about branch or feeder breakers.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 am not certain what the OP is asking but if the panel is rated 200 amps you cannot have a main breaker in the panel greater than 200 amps-- that would be the max. Sure you could use a 30 or a 100amp but the op was asking for the max size. ML panels have conversion kits for MB but you cannot use a 225amp MB in the panel if the panel is rated 200 amps.I agree, I am sure he is asking about branch or feeder breakers.
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.