Wire Data Size  *DC THHN-THWN RHH-RHW THW TW XHHW AWG/ Resist. Area Dia. Area Dia. Area Dia. Area Dia. Area Dia. MCM ohm/M sq. in. in. sq. in. in. sq. in. in. sq. in. in. sq. in. in. 14 2.57 0.0087 0.105 0.0206 0.162 0.0206 0.162 0.0135 0.131 0.0131 0.129 12 1.62 0.0117 0.122 0.0251 0.179 0.0251 0.179 0.0172 0.148 0.0167 0.146 10 1.018 0.0184 0.153 0.0311 0.199 0.0311 0.199 0.0224 0.168 0.0216 0.166 8 0.653 0.0373 0.218 0.0598 0.276 0.0598 0.276 0.0471 0.245 0.0456 0.241 6 0.41 0.0519 0.257 0.0819 0.323 0.0819 0.323 0.0819 0.323 0.0625 0.282 4 0.259 0.0845 0.328 0.1087 0.372 0.1087 0.372 0.1087 0.372 0.0845 0.328 3 0.205 0.0995 0.356 0.1263 0.401 0.1263 0.401 0.1263 0.401 0.0995 0.356 2 0.162 0.1182 0.388 0.1473 0.433 0.1473 0.433 0.1473 0.433 0.1182 0.388 1 0.129 0.159 0.45 0.2027 0.508 0.2027 0.508 0.2027 0.508 0.159 0.45 1/0 0.102 0.1893 0.491 0.2367 0.549 0.2367 0.549 0.2367 0.549 0.1893 0.491 2/0 0.0811 0.2265 0.537 0.2781 0.595 0.2781 0.595 0.2781 0.595 0.2265 0.537 3/0 0.0642 0.2715 0.588 0.3288 0.647 0.3288 0.647 0.3288 0.647 0.2715 0.588 4/0 0.0509 0.3278 0.646 0.3904 0.705 0.3904 0.705 0.3904 0.705 0.3278 0.646 250 0.0431 0.4026 0.716 0.4877 0.788 0.4877 0.788 0.4877 0.788 0.4026 0.716 300 0.036 0.4669 0.771 0.5581 0.843 0.5581 0.843 0.5581 0.843 0.4669 0.771 350 0.0308 0.5307 0.822 0.6291 0.895 0.6291 0.895 0.6291 0.895 0.5307 0.822 400 0.027 0.5931 0.869 0.6969 0.942 0.6969 0.942 0.6969 0.942 0.5931 0.869 500 0.0216 0.7163 0.955 0.8316 1.029 0.8316 1.029 0.8316 1.029 0.7163 0.955

 

Areas Of Conduit For Combinations Of wires (Not Lead Covered) Conduit Internal Total Area Total Allowable Area - sq. in. Size DIA. sq. in. 1 Cond. 2 Cond. Over 2 Cond inches inches (100%) (53%) (31%) (40%) 1/2 0.622 0.3 0.16 0.09 0.12 3/4 0.824 0.53 0.28 0.16 0.21 1 1.049 0.86 0.46 0.27 0.34 1-1/4 1.38 1.5 0.8 0.47 0.6 1-1/2 1.61 2.04 1.08 0.63 0.82 2 2.067 3.36 1.78 1.04 1.34 2-1/2 2.469 4.79 2.54 1.48 1.92 3 3.068 7.38 3.91 2.29 2.95 3-1/2 3.548 9.9 5.25 3.07 3.96 4 4.026 12.72 6.74 3.94 5.09