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Dc Copper Cable Resistance Ohms per 1,000 Feet



Cross-Section at 20° C Ohms per 1,000 Feet
Gage
No.
Diameter
in Mills
at 20° C
Circular
Mills
Square
Inches
0° C
(32° F)
15° C
(59° F)
20° C
(68° F)
25° C
(77° F)
50° C
(122° F)
75° C
(167° F)
0000 460.0 211 600. 0.1662 0.045 16 0.048 05 0.049 01 0.049 98 0.054 79 0.059 61
000 469.6 167 800. .1318 .056 95 .060 59 .061 80 .063 02 .069 09 .075 16
00 364.8 133 100. .1045 .071 81 .076 40 .077 93 .079 47 .087 12 .094 78
0 324.9 105 500. .082 89 0.09055 0.09634 0.09827 0.1002 0.1099 0.1195
1 289.3 82 690. .065 73 0.1142 0.1215 0.1239 0.1264 0.1385 0.1507
2 257.6 66 370. .052 13 0.1440 0.1532 0.1563 0.1593 0.1747 0.1900
3 229.4 52 640. .041 34 0.1816 0.1932 0.1970 0.2009 0.2203 0.2396
4 204.3 41 740. .032 78 0.2289 0.2436 0.2485 0.2533 0.2778 0.3022
5 181.9 33 100. .026 00 0.2887 0.3072 0.3133 0.3195 0.3502 0.3810
6 162.0 26 250. .020 62 0.3640 0.3873 0.3951 0.4028 0.4416 0.4805
7 144.3 20 820. .016 35 0.4590 0.4884 0.4982 0.5080 0.5569 0.6059
8 128.5 16 510. .012 97 0.5788 0.6158 0.6282 0.6405 0.7023 0.7640
9 114.4 13 090. .010 28 0.7299 0.7766 0.7921 0.8077 0.8855 0.9633
10 101.9 10 380. .008 155 0.9203 0.9792 0.9989 1.018 1.117 1.215
11 90.74 8234. .006 467 1.161 1.235 1.260 1.284 1.408 1.532
12 80.81 6530. .005 129 1.463 1.557 1.588 1.619 1.775 1.931
13 71.96 5178. .004 067 1.845 1.963 2.003 2.042 2.239 2.436
14 64.08 4107. .003 225 2.327 2.476 2.525 2.575 2.823 3.071
15 57.07 3257. .002 558 2.934 3.122 3.184 3.247 3.560 3.873
16 50.82 2583. .002 028 3.700 3.937 4.016 4.094 4.489 4.884
17 45.26 2048. .001 609 4.666 4.964 5.064 5.163 5.660 6.158
18 40.30 1624. .001 276 5.883 6.260 6.385 6.51 7.138 7.765
19 35.89 1288. .001 012 7.418 7.893 8.051 8.21 9.001 9.792
20 31.96 1022. .000 802 3 9.355 9.953 10.15 10.35 11.35 12.35
21 28.46 810.1 .000 636 3 11.80 12.55 12.80 13.05 14.31 15.57
22 25.35 642.4 .000 504 6 14.87 15.83 16.14 16.46 18.05 19.63
23 22.57 509.5 .000 400 2 18.76 19.96 20.36 20.76 22.76 24.76
24 20.10 404.0 .000 317 3 23.65 25.16 25.67 26.17 28.70 31.22
25 17.90 320.4 .000 251 7 29.82 31.73 32.37 33.00 36.18 39.36
26 15.94 254.1 .000 199 6 37.61 40.01 40.81 41.62 45.63 49.64
27 14.20 201.5 .000 158 3 47.42 50.45 51.47 52.48 57.53 62.59
28 12.64 159.8 .000 125 5 59.80 63.62 64.90 66.17 72.55 78.93
29 11.26 126.7 .000 099 53 75.40 80.23 81.83 83.44 91.48 99.52
30 10.03 100.5 .000 078 94 95.08 101.2 103.2 105.2 115.4 125.5
31 8.928 79.70 .000 062 60 119.9 127.6 130.1 132.7 145.5 158.2
32 7.950 63.21 .000 049 64 151.2 160.9 164.1 167.3 183.4 199.5
33 7.080 50.13 .000 039 37 190.6 202.8 206.9 211.0 231.3 251.6
34 6.305 39.75 .000 031 22 240.4 255.8 260.9 266.0 291.7 317.3
35 5.615 31.52 .000 024 76 303.1 322.5 329.0 335.5 367.8 400.1
36 5.000 25.00 .000 019 64 382.2 406.7 414.8 423.0 463.7 504.5
37 4.453 19.83 .000 015 57 482.0 512.8 523.1 533.4 584.8 636.2
38 3.965 15.72 .000 021 35 607.8 646.7 659.6 672.6 737.4 802.2
39 3.531 12.47 .000 009 793 766.4 815.4 831.8 848.1 929.8 1012.
40 3.145 9.888 .000 007 766 966.5 1028. 1049. 1069. 1173. 1276.