{
 "meta": {
  "title": "AWG Wire Size Chart",
  "rows": 44,
  "formulas": {
   "diameter": "d(n) = 0.005 x 92^((36-n)/39) inch  [AWG definition]",
   "area_cmil": "(d_mils)^2",
   "resistance": "R = rho x L / A at 20C, rho_Cu = 1.7241e-08 (100% IACS, ASTM B3), rho_Al = 2.8264e-08 (61% IACS, ASTM B230). ASTM B258 defines AWG diameters and areas, not resistivity.",
   "voltage_drop": "L_max = (V x pct/100) / (2 x I x R_per_ft)",
   "speaker_rule": "R_wire <= 5% of speaker impedance"
  },
  "AMPACITY_NOTICE": "This dataset intentionally contains NO ampacity values. Ampacity is governed by NEC (NFPA 70) Table 310.16 and local amendments; NFPA asserts copyright over its tables. Refer users to NFPA's free online read-only access and to their local code edition.",
  "disclaimer": "Voltage-drop figures are engineering calculations, not code compliance. Actual wiring must follow local electrical code and be performed by a licensed electrician."
 },
 "columns": [
  "awg",
  "diameter_in",
  "diameter_mm",
  "area_cmil",
  "area_mm2",
  "ohm_per_1000ft_copper",
  "ohm_per_1000ft_aluminum",
  "ohm_per_1000ft_copper_75c"
 ],
 "rows": [
  {
   "awg": "4/0",
   "diameter_in": 0.46,
   "diameter_mm": 11.684,
   "area_cmil": 211600.0,
   "area_mm2": 107.2193,
   "ohm_per_1000ft_copper": 0.04901,
   "ohm_per_1000ft_aluminum": 0.08035,
   "ohm_per_1000ft_copper_75c": 0.05961
  },
  {
   "awg": "3/0",
   "diameter_in": 0.40964,
   "diameter_mm": 10.4049,
   "area_cmil": 167806.4,
   "area_mm2": 85.0288,
   "ohm_per_1000ft_copper": 0.0618,
   "ohm_per_1000ft_aluminum": 0.10132,
   "ohm_per_1000ft_copper_75c": 0.07516
  },
  {
   "awg": "2/0",
   "diameter_in": 0.3648,
   "diameter_mm": 9.2658,
   "area_cmil": 133076.5,
   "area_mm2": 67.4309,
   "ohm_per_1000ft_copper": 0.07793,
   "ohm_per_1000ft_aluminum": 0.12776,
   "ohm_per_1000ft_copper_75c": 0.09478
  },
  {
   "awg": "1/0",
   "diameter_in": 0.32486,
   "diameter_mm": 8.2515,
   "area_cmil": 105534.5,
   "area_mm2": 53.4751,
   "ohm_per_1000ft_copper": 0.09827,
   "ohm_per_1000ft_aluminum": 0.1611,
   "ohm_per_1000ft_copper_75c": 0.11951
  },
  {
   "awg": "1",
   "diameter_in": 0.2893,
   "diameter_mm": 7.3481,
   "area_cmil": 83692.7,
   "area_mm2": 42.4077,
   "ohm_per_1000ft_copper": 0.12392,
   "ohm_per_1000ft_aluminum": 0.20314,
   "ohm_per_1000ft_copper_75c": 0.1507
  },
  {
   "awg": "2",
   "diameter_in": 0.25763,
   "diameter_mm": 6.5437,
   "area_cmil": 66371.3,
   "area_mm2": 33.6308,
   "ohm_per_1000ft_copper": 0.15626,
   "ohm_per_1000ft_aluminum": 0.25616,
   "ohm_per_1000ft_copper_75c": 0.19003
  },
  {
   "awg": "3",
   "diameter_in": 0.22942,
   "diameter_mm": 5.8273,
   "area_cmil": 52634.8,
   "area_mm2": 26.6705,
   "ohm_per_1000ft_copper": 0.19704,
   "ohm_per_1000ft_aluminum": 0.32301,
   "ohm_per_1000ft_copper_75c": 0.23963
  },
  {
   "awg": "4",
   "diameter_in": 0.20431,
   "diameter_mm": 5.1894,
   "area_cmil": 41741.3,
   "area_mm2": 21.1506,
   "ohm_per_1000ft_copper": 0.24846,
   "ohm_per_1000ft_aluminum": 0.40731,
   "ohm_per_1000ft_copper_75c": 0.30216
  },
  {
   "awg": "5",
   "diameter_in": 0.18194,
   "diameter_mm": 4.6213,
   "area_cmil": 33102.4,
   "area_mm2": 16.7732,
   "ohm_per_1000ft_copper": 0.3133,
   "ohm_per_1000ft_aluminum": 0.51361,
   "ohm_per_1000ft_copper_75c": 0.38102
  },
  {
   "awg": "6",
   "diameter_in": 0.16202,
   "diameter_mm": 4.1154,
   "area_cmil": 26251.4,
   "area_mm2": 13.3018,
   "ohm_per_1000ft_copper": 0.39506,
   "ohm_per_1000ft_aluminum": 0.64765,
   "ohm_per_1000ft_copper_75c": 0.48046
  },
  {
   "awg": "7",
   "diameter_in": 0.14429,
   "diameter_mm": 3.6649,
   "area_cmil": 20818.3,
   "area_mm2": 10.5488,
   "ohm_per_1000ft_copper": 0.49817,
   "ohm_per_1000ft_aluminum": 0.81667,
   "ohm_per_1000ft_copper_75c": 0.60585
  },
  {
   "awg": "8",
   "diameter_in": 0.12849,
   "diameter_mm": 3.2636,
   "area_cmil": 16509.7,
   "area_mm2": 8.3656,
   "ohm_per_1000ft_copper": 0.62818,
   "ohm_per_1000ft_aluminum": 1.0298,
   "ohm_per_1000ft_copper_75c": 0.76396
  },
  {
   "awg": "9",
   "diameter_in": 0.11442,
   "diameter_mm": 2.9064,
   "area_cmil": 13092.7,
   "area_mm2": 6.6342,
   "ohm_per_1000ft_copper": 0.79212,
   "ohm_per_1000ft_aluminum": 1.29856,
   "ohm_per_1000ft_copper_75c": 0.96333
  },
  {
   "awg": "10",
   "diameter_in": 0.1019,
   "diameter_mm": 2.5882,
   "area_cmil": 10383.0,
   "area_mm2": 5.2612,
   "ohm_per_1000ft_copper": 0.99884,
   "ohm_per_1000ft_aluminum": 1.63745,
   "ohm_per_1000ft_copper_75c": 1.21474
  },
  {
   "awg": "11",
   "diameter_in": 0.09074,
   "diameter_mm": 2.3048,
   "area_cmil": 8234.1,
   "area_mm2": 4.1723,
   "ohm_per_1000ft_copper": 1.25952,
   "ohm_per_1000ft_aluminum": 2.06478,
   "ohm_per_1000ft_copper_75c": 1.53176
  },
  {
   "awg": "12",
   "diameter_in": 0.08081,
   "diameter_mm": 2.0525,
   "area_cmil": 6529.9,
   "area_mm2": 3.3088,
   "ohm_per_1000ft_copper": 1.58822,
   "ohm_per_1000ft_aluminum": 2.60364,
   "ohm_per_1000ft_copper_75c": 1.93151
  },
  {
   "awg": "13",
   "diameter_in": 0.07196,
   "diameter_mm": 1.8278,
   "area_cmil": 5178.5,
   "area_mm2": 2.624,
   "ohm_per_1000ft_copper": 2.00271,
   "ohm_per_1000ft_aluminum": 3.28313,
   "ohm_per_1000ft_copper_75c": 2.43559
  },
  {
   "awg": "14",
   "diameter_in": 0.06408,
   "diameter_mm": 1.6277,
   "area_cmil": 4106.7,
   "area_mm2": 2.0809,
   "ohm_per_1000ft_copper": 2.52537,
   "ohm_per_1000ft_aluminum": 4.13996,
   "ohm_per_1000ft_copper_75c": 3.07123
  },
  {
   "awg": "15",
   "diameter_in": 0.05707,
   "diameter_mm": 1.4495,
   "area_cmil": 3256.8,
   "area_mm2": 1.6502,
   "ohm_per_1000ft_copper": 3.18443,
   "ohm_per_1000ft_aluminum": 5.22039,
   "ohm_per_1000ft_copper_75c": 3.87274
  },
  {
   "awg": "16",
   "diameter_in": 0.05082,
   "diameter_mm": 1.2908,
   "area_cmil": 2582.7,
   "area_mm2": 1.3087,
   "ohm_per_1000ft_copper": 4.01549,
   "ohm_per_1000ft_aluminum": 6.58279,
   "ohm_per_1000ft_copper_75c": 4.88344
  },
  {
   "awg": "17",
   "diameter_in": 0.04526,
   "diameter_mm": 1.1495,
   "area_cmil": 2048.2,
   "area_mm2": 1.0378,
   "ohm_per_1000ft_copper": 5.06344,
   "ohm_per_1000ft_aluminum": 8.30074,
   "ohm_per_1000ft_copper_75c": 6.1579
  },
  {
   "awg": "18",
   "diameter_in": 0.0403,
   "diameter_mm": 1.0237,
   "area_cmil": 1624.3,
   "area_mm2": 0.823,
   "ohm_per_1000ft_copper": 6.38488,
   "ohm_per_1000ft_aluminum": 10.46704,
   "ohm_per_1000ft_copper_75c": 7.76497
  },
  {
   "awg": "19",
   "diameter_in": 0.03589,
   "diameter_mm": 0.9116,
   "area_cmil": 1288.1,
   "area_mm2": 0.6527,
   "ohm_per_1000ft_copper": 8.05119,
   "ohm_per_1000ft_aluminum": 13.1987,
   "ohm_per_1000ft_copper_75c": 9.79145
  },
  {
   "awg": "20",
   "diameter_in": 0.03196,
   "diameter_mm": 0.8118,
   "area_cmil": 1021.5,
   "area_mm2": 0.5176,
   "ohm_per_1000ft_copper": 10.15236,
   "ohm_per_1000ft_aluminum": 16.64325,
   "ohm_per_1000ft_copper_75c": 12.34679
  },
  {
   "awg": "21",
   "diameter_in": 0.02846,
   "diameter_mm": 0.7229,
   "area_cmil": 810.1,
   "area_mm2": 0.4105,
   "ohm_per_1000ft_copper": 12.80189,
   "ohm_per_1000ft_aluminum": 20.98675,
   "ohm_per_1000ft_copper_75c": 15.56902
  },
  {
   "awg": "22",
   "diameter_in": 0.02535,
   "diameter_mm": 0.6438,
   "area_cmil": 642.4,
   "area_mm2": 0.3255,
   "ohm_per_1000ft_copper": 16.14288,
   "ohm_per_1000ft_aluminum": 26.46381,
   "ohm_per_1000ft_copper_75c": 19.63217
  },
  {
   "awg": "23",
   "diameter_in": 0.02257,
   "diameter_mm": 0.5733,
   "area_cmil": 509.5,
   "area_mm2": 0.2582,
   "ohm_per_1000ft_copper": 20.3558,
   "ohm_per_1000ft_aluminum": 33.37024,
   "ohm_per_1000ft_copper_75c": 24.75571
  },
  {
   "awg": "24",
   "diameter_in": 0.0201,
   "diameter_mm": 0.5106,
   "area_cmil": 404.0,
   "area_mm2": 0.2047,
   "ohm_per_1000ft_copper": 25.66819,
   "ohm_per_1000ft_aluminum": 42.0791,
   "ohm_per_1000ft_copper_75c": 31.21637
  },
  {
   "awg": "25",
   "diameter_in": 0.0179,
   "diameter_mm": 0.4547,
   "area_cmil": 320.4,
   "area_mm2": 0.1624,
   "ohm_per_1000ft_copper": 32.36699,
   "ohm_per_1000ft_aluminum": 53.06077,
   "ohm_per_1000ft_copper_75c": 39.36312
  },
  {
   "awg": "26",
   "diameter_in": 0.01594,
   "diameter_mm": 0.4049,
   "area_cmil": 254.1,
   "area_mm2": 0.1288,
   "ohm_per_1000ft_copper": 40.81402,
   "ohm_per_1000ft_aluminum": 66.90839,
   "ohm_per_1000ft_copper_75c": 49.63597
  },
  {
   "awg": "27",
   "diameter_in": 0.0142,
   "diameter_mm": 0.3606,
   "area_cmil": 201.5,
   "area_mm2": 0.1021,
   "ohm_per_1000ft_copper": 51.46553,
   "ohm_per_1000ft_aluminum": 84.36992,
   "ohm_per_1000ft_copper_75c": 62.58981
  },
  {
   "awg": "28",
   "diameter_in": 0.01264,
   "diameter_mm": 0.3211,
   "area_cmil": 159.8,
   "area_mm2": 0.081,
   "ohm_per_1000ft_copper": 64.89684,
   "ohm_per_1000ft_aluminum": 106.38851,
   "ohm_per_1000ft_copper_75c": 78.92429
  },
  {
   "awg": "29",
   "diameter_in": 0.01126,
   "diameter_mm": 0.2859,
   "area_cmil": 126.7,
   "area_mm2": 0.0642,
   "ohm_per_1000ft_copper": 81.8334,
   "ohm_per_1000ft_aluminum": 134.15343,
   "ohm_per_1000ft_copper_75c": 99.52169
  },
  {
   "awg": "30",
   "diameter_in": 0.01003,
   "diameter_mm": 0.2546,
   "area_cmil": 100.5,
   "area_mm2": 0.0509,
   "ohm_per_1000ft_copper": 103.19002,
   "ohm_per_1000ft_aluminum": 169.16435,
   "ohm_per_1000ft_copper_75c": 125.49454
  },
  {
   "awg": "31",
   "diameter_in": 0.00893,
   "diameter_mm": 0.2268,
   "area_cmil": 79.7,
   "area_mm2": 0.0404,
   "ohm_per_1000ft_copper": 130.12021,
   "ohm_per_1000ft_aluminum": 213.31231,
   "ohm_per_1000ft_copper_75c": 158.24569
  },
  {
   "awg": "32",
   "diameter_in": 0.00795,
   "diameter_mm": 0.2019,
   "area_cmil": 63.2,
   "area_mm2": 0.032,
   "ohm_per_1000ft_copper": 164.07855,
   "ohm_per_1000ft_aluminum": 268.98186,
   "ohm_per_1000ft_copper_75c": 199.54413
  },
  {
   "awg": "33",
   "diameter_in": 0.00708,
   "diameter_mm": 0.1798,
   "area_cmil": 50.1,
   "area_mm2": 0.0254,
   "ohm_per_1000ft_copper": 206.89924,
   "ohm_per_1000ft_aluminum": 339.17986,
   "ohm_per_1000ft_copper_75c": 251.62051
  },
  {
   "awg": "34",
   "diameter_in": 0.0063,
   "diameter_mm": 0.1601,
   "area_cmil": 39.8,
   "area_mm2": 0.0201,
   "ohm_per_1000ft_copper": 260.89512,
   "ohm_per_1000ft_aluminum": 427.69791,
   "ohm_per_1000ft_copper_75c": 317.2876
  },
  {
   "awg": "35",
   "diameter_in": 0.00561,
   "diameter_mm": 0.1426,
   "area_cmil": 31.5,
   "area_mm2": 0.016,
   "ohm_per_1000ft_copper": 328.98267,
   "ohm_per_1000ft_aluminum": 539.31711,
   "ohm_per_1000ft_copper_75c": 400.09228
  },
  {
   "awg": "36",
   "diameter_in": 0.005,
   "diameter_mm": 0.127,
   "area_cmil": 25.0,
   "area_mm2": 0.0127,
   "ohm_per_1000ft_copper": 414.83949,
   "ohm_per_1000ft_aluminum": 680.06631,
   "ohm_per_1000ft_copper_75c": 504.50705
  },
  {
   "awg": "37",
   "diameter_in": 0.00445,
   "diameter_mm": 0.1131,
   "area_cmil": 19.8,
   "area_mm2": 0.01,
   "ohm_per_1000ft_copper": 523.10294,
   "ohm_per_1000ft_aluminum": 857.54779,
   "ohm_per_1000ft_copper_75c": 636.17164
  },
  {
   "awg": "38",
   "diameter_in": 0.00397,
   "diameter_mm": 0.1007,
   "area_cmil": 15.7,
   "area_mm2": 0.008,
   "ohm_per_1000ft_copper": 659.62063,
   "ohm_per_1000ft_aluminum": 1081.3478,
   "ohm_per_1000ft_copper_75c": 802.19762
  },
  {
   "awg": "39",
   "diameter_in": 0.00353,
   "diameter_mm": 0.0897,
   "area_cmil": 12.5,
   "area_mm2": 0.0063,
   "ohm_per_1000ft_copper": 831.76625,
   "ohm_per_1000ft_aluminum": 1363.5544,
   "ohm_per_1000ft_copper_75c": 1011.55253
  },
  {
   "awg": "40",
   "diameter_in": 0.00314,
   "diameter_mm": 0.0799,
   "area_cmil": 9.9,
   "area_mm2": 0.005,
   "ohm_per_1000ft_copper": 1048.83788,
   "ohm_per_1000ft_aluminum": 1719.41035,
   "ohm_per_1000ft_copper_75c": 1275.54419
  }
 ]
}