Okay, here's a doozie of a question for you guys. Let suppose you had a 500 MCM feeder rated at 380A at 75'C and you wanted to run a tap that terminates to a 100A overcurrent device. Now the temperature for this OCPD is not given so you would have to apply either NEC 110.14(C)(1)(a) or (b) which states that equipment terminations rated at 100A or less shall have the connecting conductors rated 60'C otherwise it's 75'C. What temperature would you use to size the tap? 60'C or 75'C? I mean the OCPD is rated at 100A but the feeder is rated at 75'C.