I think I've got the tables into a legible form now.
the NEC gives the names of a whole number of cables. For the time being, I haven't included them, but it appears to include all cable commonly used in the US.
Maybe some of the Americans would like to shed some light on when you can and cannot use table 310.16?
P.S. I'll try to go the other way as well and add AWG sizes to the Swedish or British tables. (It is bigger, as there are tables for clipped directly/free air, in thermal insulation and so on. Not to mention correction factors...
I played a little more with Excel. It turns out that the ampacities of Table 310.16 match those in the column "One two core cable enclosed in conduit on a wall or in trunking" (*) in the IEE regs.
* I got the data from a cable manufacturer. The column is probably called something else in the actual regs.
[This message has been edited by C-H (edited 07-10-2004).]