First, I admit to being a PE who went thru college with no NEC training and learned enough to handle a few exam questions. There is so much to learn about the code I wanted to tap your experience. Here's a couple questions.

Q1> For equipment connections >100amps, is it permissible to use 90C ampacity wire (adjusted for derates) so long as equipment lugs are rated 90C?
NEC 2002 Re 110.14.c.1.b.2

Q2> Is it permissible to use type DLO cable (90C Diesel Locomotive cable ... re Houston Wire and Cable) in a conduit raceway provided equipment lugs are rated 90C? Further, DLO is not shown in 310.16 ... does this mean it should never be used?

Appreciate your thoughts ... 3 Way