American Wire Gauge Cable Sizes

American Wire Gauge (AWG) Cable / Conductor Sizes and Properties

Properties of Conductors

Size
(AWG
MCM)
Area
circle
(mils)
Concentric lay
conductors
Bare conductors DC resistance Ω/M ft
at 77°F (25°C)**
No. of
wires
Diameter
each wire
(inch)
Diameter
(inch)
Area
(sq inch)
Copper Aluminum
Bare Tin’d
18 1620 0.0403 0.0013 6.51 6.79 10.7
16 2580 0.0508 0.0020 4.10 4.26 6.72
14 4110 0.0641 0.0032 2.57 2.68 4.22
12 6530 0.0808 0.0051 1.62 1.68 2.66
10 10,380 0.1019 0.0081 1.018 1.06 1.67
8 16,510 0.1285 0.0130 0.6404 0.659 1.05
6 26,240 7 0.0612 0.184 0.027 0.410 0.427 0.674
4 41,740 7 0.0772 0.232 0.042 0.259 0.269 0.424
3 52,620 7 0.0867 0.260 0.053 0.205 0.213 0.336
2 66,360 7 0.0974 0.292 0.067 0.162 0.169 0.266
1 83,690 19 0.0664 0.332 0.087 0.129 0.134 0.211
0 105,600 19 0.0745 0.372 0.109 0.102 0.106 0.168
00 133,100 19 0.0837 0.418 0.137 0.0811 0.0843 0.133
000 167,800 19 0.0940 0.470 0.173 0.0642 0.0668 0.105
0000 211,600 19 0.1055 0.528 0.219 0.0509 0.0525 0.0836
250 250,000 37 0.0822 0.575 0.260 0.0431 0.0449 0.0708
300 300,000 37 0.0900 0.630 0.312 0.0360 0.0374 0.0590
350 350,000 37 0.0973 0.681 0.364 0.0308 0.0320 0.0505
400 400,000 37 0.1040 0.728 0.416 0.0270 0.0278 0.0442
500 500,000 37 0.1162 0.813 0.519 0.0216 0.0222 0.0354
600 600,000 61 0.0992 0.893 0.626 0.0180 0.0187 0.0295
700 700,000 61 0.1071 0.964 0.730 0.0154 0.0159 0.0253
750 750,000 61 0.1109 0.998 0.782 0.0144 0.0148 0.0236
800 800,000 61 0.1145 1.030 0.833 0.0135 0.0139 0.0221
900 900,000 61 0.1215 1.090 0.933 0.0120 0.0123 0.0197
1000 1,000,000 61 0.1280 1.150 1.039 0.0108 0.0111 0.0177
1250 1,250,000 91 0.1172 1.289 1.305 0.00863 0.00888 0.0142
1500 1,500,000 91 0.1284 1.140 1.561 0.00719 0.00740 0.0118
1750 1,750,000 127 0.1174 1.526 1.829 0.00616 0.00634 0.0101
2000 2,000,000 127 0.1255 1.630 2.087 0.00539 0.00555 0.00885

** The resistance values given in the last three columns apply only to direct current. When using conductors larger than number 4/0 with alternating current, use the multiplying factors in the table below to compensate for skin effect.

 

Multiplying Factors for Converting Resistance
to 60-Hertz AC Resistance

Size Multiplying factor
For nonmetallic sheathed
cables in air or
nonmetallic conduits
For metallic sheathed cables
or all cables in
metallic raceways
Copper Aluminum Copper Aluminum
Up to 3 AWG 1.000 1.000 1.00 1.00
Up to 2 AWG 1.000 1.000 1.01 1.00
Up to 1 AWG 1.000 1.000 1.01 1.00
0 1.001 1.000 1.02 1.00
00 1.001 1.001 1.03 1.00
000 1.002 1.001 1.04 1.01
0000 1.004 1.002 1.05 1.01
250 MCM 1.005 1.002 1.06 1.02
300 MCM 1.006 1.003 1.07 1.02
350 MCM 1.009 1.004 1.08 1.03
400 MCM 1.011 1.005 1.10 1.04
500 MCM 1.018 1.007 1.13 1.06
600 MCM 1.025 1.010 1.16 1.08
700 MCM 1.034 1.013 1.19 1.11
750 MCM 1.039 1.015 1.21 1.12
800 MCM 1.044 1.017 1.22 1.14
1000 MCM 1.067 1.026 1.30 1.19
1250 MCM 1.102 1.040 1.41 1.27
1500 MCM 1.142 1.058 1.53 1.36
1750 MCM 1.185 1.079 1.67 1.46
2000 MCM 1.233 1.100 1.82 1.56