Hi,
When choosing a cable, you should focus on the installation conditions. Derating factors can significantly change the base value of current carrying capacity. Are there any loaded neighboring cables or communications?
In any case, initially the cable was selected at the limit, without current margin. Next is your case without correction factors:
View attachment 59020
and the report ….
View attachment 59021
Can you clarify the installation conditions and the effect of the loaded neighboring cables?