# Engineering Tables/American Wire Gauge

The table below shows various data including both the resistance of the various wire gauges and the allowable current (ampacity) based on plastic insulation. The diameter information in the table applies to solid wires. Stranded wires are calculated by calculating the equivalent cross sectional copper area. Fusing Current (melting wire) is estimated based on 25 °C. The table below assumes DC, or AC frequencies equal to or less than 60 Hz, and does not take skin effect into account. Turns of wire is on a best-case scenario when winding tightly packed coils with no insulation.
    AWGDiameterTurns of wireAreaCopper resistanceNEC copper wire ampacity with 60/75/ 90 °C insulation (A)Approximate stranded metric equivalentsFusing Current (copper) (inch)(mm)(per inch)(per cm)(kcmil)(mm$^2$)(Ω/km)(Ω/kFT)Preese (~10s)Onderdonk (1s)Onderdonk (32ms) 0000 (4/0)0.460011.6842.170.8562121070.16080.04901195 / 230 / 26031KA173KA 000 (3/0)0.409610.4042.440.96116885.00.20280.06180165 / 200 / 22524.5KA137KA 00 (2/0)0.36489.2662.741.0813367.40.25570.07793145 / 175 / 19519.5KA109KA 0 (1/0)0.32498.2523.081.2110653.50.32240.09827125 / 150 / 1701.9KA15.5KA87KA 10.28937.3483.461.3683.742.40.40660.1239110 / 130 / 1501.6KA12KA68KA 20.25766.5443.881.5366.433.60.51270.156395 / 115 / 1301.3KA9.7KA54KA 30.22945.8274.361.7252.626.70.64650.197085 / 100 / 110196/0.41.1KA7.7KA43KA 40.20435.1894.891.9341.721.20.81520.248570 / 85 / 95946A6.1KA34KA 50.18194.6215.502.1633.116.81.0280.3133126/0.4795A4.8KA27KA 60.16204.1156.172.4326.313.31.2960.395155 / 65 / 75668A3.8KA21KA 70.14433.6656.932.7320.810.51.6340.498280/0.4561A3KA17KA 80.12853.2647.783.0616.58.372.0610.628240 / 50 / 55472A2.4KA13.5KA 90.11442.9068.743.4413.16.632.5990.792184/0.3396A1.9KA10.7KA 100.10192.5889.813.8610.45.263.2770.998930 / 35 / 40333A1.5KA8.5KA 110.09072.30511.04.348.234.174.1321.26056/0.3280A1.2KA6.7KA 120.08082.05312.44.876.533.315.2111.58825 / 25 / 30235A955A5.3KA 130.07201.82813.95.475.182.626.5712.00350/0.25198A758A4.2KA 140.06411.62815.66.144.112.088.2862.52520 / 20 / 25166A601A3.3KA 150.05711.45017.56.903.261.6510.453.18430/0.25140A477A2.7KA 160.05081.29119.77.752.581.3113.174.016— / — / 18117A377A2.1KA 170.04531.15022.18.702.051.0416.615.06432/0.299A300A1.7KA 180.04031.02424.89.771.620.82320.956.385— / — / 1424/0.283A237A1.3KA 190.03590.91227.911.01.290.65326.428.05170A189A1KA 200.03200.81231.312.31.020.51833.3110.1516/0.258.5A149A834A 210.02850.72335.113.80.8100.41042.0012.8013/0.249A119A662A 220.02530.64439.515.50.6420.32652.9616.147/0.2541A94A525A 230.02260.57344.317.40.5090.25866.7920.3635A74A416A 240.02010.51149.719.60.4040.20584.2225.671/0.5, 7/0.2, 30/0.129A59A330A 250.01790.45555.922.00.3200.162106.232.3724A47A262A 260.01590.40562.724.70.2540.129133.940.817/0.1520A37A208A 270.01420.36170.427.70.2020.102168.951.47 280.01260.32179.131.10.1600.0810212.964.90 290.01130.28688.835.00.1270.0642268.581.84 300.01000.25599.739.30.1010.0509338.6103.21/0.25, 7/0.1 310.008930.22711244.10.07970.0404426.9130.1 320.007950.20212649.50.06320.0320538.3164.11/0.2, 7/0.08 330.007080.18014155.60.05010.0254678.8206.9 340.006300.16015962.40.03980.0201856.0260.9 350.005610.14317870.10.03150.01601079329.0 360.005000.12720078.70.02500.01271361414.8 370.004450.11322588.40.01980.01001716523.1 380.003970.10125299.30.01570.007972164659.6 390.003530.08972831110.01250.006322729831.8 400.003140.07993181250.009890.0050134411049