If you dont mind, what type of terminations are you trying to get for 2/0? Most insulated for a few years or so have been 90C, and I cant remember ever seeing non insulated with under 90C. Unless were talking apples and oranges? As gfretwell mentioned devices, breakers and such are a different story.
Take a look at 110.14C... I believe this is the code you're reffering to? Then 310.16, with ambient tempature correction factor. And 310.15 after that... The wire size could change some more?
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Then a saving grace in 240.4B, via 240.6.
[This message has been edited by e57 (edited 01-24-2006).]