Trekkie here is a quote from the opening post.

Quote
The MCA for the heater strip supply circuit is 110amps.

MCA = Minimum Circuit Ampacity.

That statement alone means the terminals are good for 75 C.

Or

If the equipment only draws 90 amps but is equipped with lugs that accept larger than 1 AWG that also tells us that we can use the 75 C rating. [Linked Image]

Bob

Bob Badger
Construction & Maintenance Electrician
Massachusetts