Conductors are <4/0 and the area of each cable is 1.23 sq. in. The allowable fill area per T392.9(A)(2) is 21 sq.in. so it looks like I could install 17 cables in the tray with no derating as long as they only had 3 current carrying conductors in each cable.
[This message has been edited by George Little (edited 04-21-2006).]
