I have a cable, Gexol single conductor power cable, w/ a conductor ampacity at a temperature rating at 95deg C, 45 deg C ambient but I need to know what the overall derating is so I can select those cables at 90deg C operating and 40deg C ambient.
The NEC Table 310.16 has correction factors for Ambient Temp so I can adjust that from 45 down to 40deg. It also has the Temp Rating of Conductors at 60deg, 75deg, and 90deg but not 95deg. Not sure how to derate from 95deg C to 90deg C.
thx