SteamDonkey
Member
I think I already know the answer to this but I'd like to double check with you folks. Where an MOCP rating does not correspond with a standard overcurrent device rating is there anything in the NEC that allows the use of the next larger size device? When we contacted the equipment manufacturer about the 35A breaker tripping, they told us that NEC 240.4(B) allows us to use the next larger size (40A). My understanding is that 240.4(B) only applies to protection of conductors and has nothing to do with protection of equipment. Is that correct?
In my opinion the only way we could use a larger breaker is to have the mfr. re-label the equipment with a higher MOCP or provide something in writing from the mfr. that is acceptable to the AHJ.
Thanks.
In my opinion the only way we could use a larger breaker is to have the mfr. re-label the equipment with a higher MOCP or provide something in writing from the mfr. that is acceptable to the AHJ.
Thanks.