Ground Strap vs. Ground Cable
Wow that is a LOT of stranding in that cable! It ought to take a lot of flexing. Thansk for the link.
105C wire is an IEEE test rating and is continuous and for even inside of a closed raceway. Such wire can take higher temps on a transient basis.
Thanks for the interesting technical article link, but it is more for semiconductor and assembly survival, not for wiring per se. Exposure to air and heat and oil combined for wire insulation is a different animal. I used some old WWII dynamotor wires for remote battery wiring in a race car and it went into the engine compartment and never showed any issues on the isulation with many, many long endurance races.