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Code conflict: NFPA 70B and 87 (this wasn't answered, I clicked the wrong link)

Question asked by jwillett on Apr 19, 2018
Latest reply on Apr 20, 2018 by john.hal

We make process heaters and sometimes, those are electric immersion heaters.  NFPA 70b, 425.22(B) states a 48 amp limit per circuit.  However NFPA 87 (which we follow for all of our other heaters) says resistance heaters DON'T have to be subdivided into circuits of 48 amps or less.  How can we decide which code to follow?  We seem to be pretty divided on the issue.