Hypothetical. I am hooking up a range/oven that requires 50A. Its terminations are rated 60C, and there's no way around it.
The 100' wiring run is all in EMT conduit and I am running THHN wires, so I am entitled to use the 75C column. #8 copper wire is allowed 50A@75C.
My circuit breaker has 75C terminations.
I have these lovely MAC Block splice connectors, rated to 90C. They take #8 and #6 wire just fine.
So I get the idea to take the #8 wire to the Mac Block splices (90C), splice to a short #6 copper pigtail, and take the #6 to the range terminations.
Have I successfully dodged the 60C rule, or is my plan thwarted for some reason?