NEC Chapter 9 Table 5

SizeInsulation Type
AWG / KCMILTHW / THHWXHH / XHHWTHHN / THWN
Diam (in)Area (in²)Diam (in)Area (in²)Diam (in)Area (in²)
18
16
140.1330.01390.1330.01390.1110.0097
120.1520.01810.1520.01810.130.0133
100.1760.02430.1760.02430.1640.0211
80.2360.04370.2360.04370.2160.0366
60.3040.07260.2740.0590.2540.0507
40.3520.09730.3220.08140.3240.0824
30.380.11340.350.09620.3520.0973
20.4120.13330.3820.11460.3840.1158
10.4920.19010.4420.15340.4460.1562
1/00.5320.22230.4820.18250.4860.1855
2/00.5780.26240.5280.2190.5320.2223
3/00.630.31170.580.26420.5840.2679
4/00.6880.37180.6380.31970.6420.3237
2500.7650.45960.7050.39040.7110.397
3000.820.52810.760.45360.7660.4608
3500.8710.59580.8110.51660.8170.5242
4000.9180.66190.8580.57820.8640.5863
5001.0030.79010.9430.69840.9490.7073
6001.1130.97291.0530.87091.0510.8676
7001.1841.1011.1240.99231.1220.9887
7501.2181.16521.1581.05321.1561.0496
8001.251.22721.191.11221.1881.1085
9001.3141.35611.2541.23511.2521.2311
10001.3721.47841.3121.35191.311.3478
12501.5391.86021.4791.718
15001.6622.16951.6022.0157
17501.7762.47731.7162.3127
20001.8822.78181.8222.6073