I ordinarily try to prompt installers of these requirements ahead of time as best we can given that luminaries are not always on the site for the rough, in which case, in an earnest effort to avoid taking fixtures down on a final, we try to prompt electricians on a rough of these requirements. Working off NEC 2002 in our jurisdiction the conversation may go to the condition of the conductors. The intent is present by 110.3 and later cycles have 410.74 to reinforce the requirement. I still occasionally, have a debate about 60c and cloth wire being in the same box on my hands or pig-tailed over from the old conductors to the fixture wires in a ceiling box or sconce. I don't believe this is the intent of stating 90c terminations required when the conductors are intermingled and packed in the same box. Consistent, but sometimes questioned interpretation. (Often enough, there are other issues with the 60C and cloth wire at a given box where a 90C wiring termination is to be made that will dictate abating the older wire, such as, antiquation of insulation, length of conductors out of a box and box fill. I have not thoroughly viewed the history of the 90C requirements in Listings' of Luminaires, but my feeling it is somewhat manufacturer and insurance driven due to liabilities involved with older conductor and terminations to their equipment.) Thanks for posting a response! I do agree fully that if a new fixture does not have a termination temperature requirement comment of yours as well.
