wire amps capacities per type

[angraed]

I wish to know the amps capacity of a wire # 4 and # 2 in TW and THHN type or others. Do you know where I can get a table of that ampicity or which ever you call.

[suemarkp]

It is NEC table 310.16. The answer is also not so simple... Are these wires copper or aluminum? Are they in free air, or a cable or conduit? How many current carrying wires are together? Do you have high ambient temperatures (over 86F)? Are your terminations rated for 75C or just 60C? Is this wire a service conductor or main power feeder to a dwelling?

The simple answer, assuming copper wires, is:

#4 = 70A for 60C terminations or 60C wire (TW, MTW)
#2 = 95A for 60C terminations or 60C wire

#4 = 85A for 75C terminations and 75C or higher wire (THW, THWN, SE, XHHW)
#2 = 115A for 75C terminations and 75C or higher wire