Manufacturer of insulated wire, cable and tubing. 

Wire Gauge Table

wdt_ID AWG  Diameter [inches]  Diameter [mm] Area [mm^2] Resistance  [Ohms / 1000 ft]  Resistance  [Ohms / km]   Max Current [Amperes] Max Frequency for 100% skin depth 
1 0000 (4/0) 0.46 11.684 107 0.049 0.16072 302 125 Hz
2 000 (3/0) 0.4096 10.40384 85 0.0618 0.202704 239 160 Hz
3 00 (2/0) 0.3648 9.26592 67.4 0.0779 0.255512 190 200 Hz
4 0 (1/0) 0.3249 8.25246 53.5 0.0983 0.322424 150 250 Hz
5 1 0.2893 7.34822 42.4 0.1239 0.406392 119 325 Hz
6 2 0.2576 6.54304 33.6 0.1563 0.512664 94 410 Hz
7 3 0.2294 5.82676 26.7 0.197 0.64616 75 500 Hz
8 4 0.2043 5.18922 21.2 0.2485 0.81508 60 650 Hz
9 5 0.1819 4.62026 16.8 0.3133 1.027624 47 810 Hz
10 6 0.162 4.1148 13.3 0.3951 1.295928 37 1100 Hz
AWG  Diameter [inches]  Diameter [mm] Area [mm^2] Resistance  [Ohms / 1000 ft]  Resistance  [Ohms / km]   Max Current [Amperes] Max Frequency for 100% skin depth