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 conductorsDC resistance Ω/M ft
at 77°F (25°C)**
No. of
wires
Diameter
each wire
(inch)
Diameter
(inch)
Area
(sq inch)
CopperAluminum
BareTin’d
1816200.04030.00136.516.7910.7
1625800.05080.00204.104.266.72
1441100.06410.00322.572.684.22
1265300.08080.00511.621.682.66
1010,3800.10190.00811.0181.061.67
816,5100.12850.01300.64040.6591.05
626,24070.06120.1840.0270.4100.4270.674
441,74070.07720.2320.0420.2590.2690.424
352,62070.08670.2600.0530.2050.2130.336
266,36070.09740.2920.0670.1620.1690.266
183,690190.06640.3320.0870.1290.1340.211
0105,600190.07450.3720.1090.1020.1060.168
00133,100190.08370.4180.1370.08110.08430.133
000167,800190.09400.4700.1730.06420.06680.105
0000211,600190.10550.5280.2190.05090.05250.0836
250250,000370.08220.5750.2600.04310.04490.0708
300300,000370.09000.6300.3120.03600.03740.0590
350350,000370.09730.6810.3640.03080.03200.0505
400400,000370.10400.7280.4160.02700.02780.0442
500500,000370.11620.8130.5190.02160.02220.0354
600600,000610.09920.8930.6260.01800.01870.0295
700700,000610.10710.9640.7300.01540.01590.0253
750750,000610.11090.9980.7820.01440.01480.0236
800800,000610.11451.0300.8330.01350.01390.0221
900900,000610.12151.0900.9330.01200.01230.0197
10001,000,000610.12801.1501.0390.01080.01110.0177
12501,250,000910.11721.2891.3050.008630.008880.0142
15001,500,000910.12841.1401.5610.007190.007400.0118
17501,750,0001270.11741.5261.8290.006160.006340.0101
20002,000,0001270.12551.6302.0870.005390.005550.00885

** 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

SizeMultiplying factor
For nonmetallic sheathed
cables in air or
nonmetallic conduits
For metallic sheathed cables
or all cables in
metallic raceways
CopperAluminumCopperAluminum
Up to 3 AWG1.0001.0001.001.00
Up to 2 AWG1.0001.0001.011.00
Up to 1 AWG1.0001.0001.011.00
01.0011.0001.021.00
001.0011.0011.031.00
0001.0021.0011.041.01
00001.0041.0021.051.01
250 MCM1.0051.0021.061.02
300 MCM1.0061.0031.071.02
350 MCM1.0091.0041.081.03
400 MCM1.0111.0051.101.04
500 MCM1.0181.0071.131.06
600 MCM1.0251.0101.161.08
700 MCM1.0341.0131.191.11
750 MCM1.0391.0151.211.12
800 MCM1.0441.0171.221.14
1000 MCM1.0671.0261.301.19
1250 MCM1.1021.0401.411.27
1500 MCM1.1421.0581.531.36
1750 MCM1.1851.0791.671.46
2000 MCM1.2331.1001.821.56