Copper Wire Resistance Values

(26 AWG thru 44 AWG)


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Bare Copper

( 26 AWG thru 44 AWG )

Size
(AWG)
Diameter
(inches)
Resistance (ohms per 1000 feet @ 20C)
100% IACS 101.5% IACS
  Minimum Nominal Maximum Minimum Nominal Maximum Minimum Nominal Maximum
26 .0157 .0159 .0161 40.01 41.02 42.07 39.42 40.42 41.45
27 .0141 .0142 .0143 50.72 51.43 52.17 49.97 50.67 51.39
28 .0125 .0126 .0127 64.30 65.33 66.37 63.35 64.36 65.39
29 .0112 .0113 .0114 79.80 81.22 82.68 78.62 80.02 81.46
30 .0099 .0100 .0101 101.7 103.7 105.8 100.2 102.2 104.3
31 .0088 .0089 .0090 128.0 130.9 133.9 126.1 129.0 131.9
32 .0079 .0080 .0081 158.1 162.0 166.2 155.7 159.7 163.7
33 .0070 .0071 .0072 200.1 205.7 211.7 197.1 202.7 208.5
34 .0062 .0063 .0064 253.2 261.3 269.8 249.5 257.4 265.8
35 .0055 .0056 .0057 319.2 330.7 342.8 314.5 325.8 337.7
36 .0049 .0050 .0051 398.7 414.8 431.9 392.8 408.7 425.6
37 .0044 .0045 .0046 490.1 512.1 535.7 482.9 505.0 527.8
38 .0039 .0040 .0041 617.0 648.2 681.9 607.8 639.0 671.8
39 .0034 .0035 .0036 800.2 846.6 897.1 788.4 834.0 883.9
40 .0030 .0031 .0032 1013 1097 1152 997.8 1063.0 1135.3
41 .0027 .0028 .0029 1233 1323 1423 1215.0 1303.0 1401.6
42 .0024 .0025 .0026 1534 1659 1801 1511.5 1635.0 1773.9
43 .0021 .0022 .0023 1960 2143 2352 1913.5 2111.0 2316.9
44 .0019 .0020 .0021 2352 2593 2873 2316.9 2554.0 2830.4
45 .00169 .00176 .00183 3080.0 3348.0 3616.0 3051.1 3299.0 3577.5
46 .00151 .00157 .00164 3870.0 4207.5 4544.0 3799.0 4145.0 4481.3
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