Manufacturer of insulated wire, cable and tubing. 

Ampacity

Approximate resistance of copper wire.

wdt_ID AWG mΩ/ft mΩ/m AWG mΩ/ft mΩ/m AWG mΩ/ft mΩ/m AWG mΩ/ft mΩ/m
1 0 0.1 0.32 10 1 32 20 10 32 30 100 320
2 1 0.125 0.4 11 1.25 4 21 125 40 31 125 400
3 2 0.16 0.5 12 1.6 5 22 16 50 32 160 500
4 3 0.2 0.64 13 2 64 23 20 64 33 200 640
5 4 0.25 0.8 14 2.5 8 24 25 80 34 250 800
6 5 0.32 1 15 3.2 10 25 32 100 35 320 1.000
7 6 0.4 1.25 16 4 125 26 40 125 36 400 1.250
8 7 0.5  1.6 17 5  16 27 50 160 37 500 1.600
9 8 0.64 2 18 6.4 20 28 64 200 38 640 2.000
10 9 0.8 2.5 19 8 25 29 80 250 39 800 2.500