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Electrical Properties of Standard Annealed Copper Wire


technical article from Blue Sea Systems

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 _ _

Original article from Blue Sea Systems

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