Electrical Properties of Standard Annealed Copper Wire
Bare Wire
Gauge*
AWG
Diameter
(Nominal)
in
Area,
Circular Mils
Ohms/1000
ft
Ft/ohm Ampacity
Outside
Engine
Space
Ampacity
Inside
Engine
Space
0000 0.4600 211,600 0.04901 20,400 445
378.3
000 0.4096 167,800 0.06180 16,180 385
327.3
00 0.3648 133,100 0.07793 12,830 330
280.5
0 0.3249 105,500 0.09827 10,180 285
242.3
2 0.2576 66,370 0.1563 6,400 210
178.5
4 0.2043 41,740 0.2485 4,025 160
136
6 0.1620 26,250 0.3951 2,531 120
102
8 0.1285 16,510 0.6282 1,592 80
68
10 0.1019 10,380 0.9989 1,001 60
51
12 0.08081 6,530 1.588 630 45
38.3
14 0.06408 4,107 2.525 396 35
29.8
16 0.05082 2,583 4.016 249 25
21.3
18 0.04030 1,624 6.385 157 20
17
20 0.03196 1,022 10.15 98.5 - -
22 0.02535 642.4 16.14 61.95 - -
24 0.02010 404.0 25.67 38.96 - -
26 0.01594 254.1 40.81 24.50 - -
28 0.01264 159.8 64.90 15.41 - -
30 0.01003 100.5 103.2 9.691 - -
32 0.00795 63.21 164.1 6.095 - -
36 0.00500 25.00 414.8 2.411 - -
40 0.003145 9.888 1,049 0.9534 - -