[size:11pt]THWN -2 is clearly listed under the column for 90 degree.
[size:8pt]
Still no one is giving me a code reference.
The only thing I "know" about which column to use for what situation is that for NM you use the 60 degree column if the amperage is 100a or less; and the 75 degree column for NM over 100a. And the only reason I "know" this is that it is written in my 5th -yr. codebook, per my instructor at the time, in preparation for the big exam.. I have no idea where he got this.
Besides, none of that helps me with the question of where in the code does it specify which column to use for derating. You may be forcing me to dig out old study aids from the musty bins of my garage.[/[/size]size]
