Technical data and wire gauge charts.
Note: I got the following information from a variety of sources. I have not personally verified the data shown.
AWG
SizeInsulation
ThicknessDiameter Approx.
Weight6 65 mils 0.333 in. 116 lbs./1000' 4 65 mils 0.360 in. 158 lbs./1000' 2 60 mils 0.440 in. 244 lbs./1000' 1 60 mils 0.480 in. 304 lbs./1000' 1/0 65 mils 0.520 in. 370 lbs./1000' 2/0 65 mils 0.570 in. 458 lbs./1000' 3/0 78 mils 0.660 in. 586 lbs./1000' 4/0 78 mils 0.740 in. 779 lbs./1000'
Allowable Amperage of Conductors for Under 50V (Per SAE J-378)
Note: Since most wire is rated at 85°C use the 80°C values.
Conductor Size
(AWG)Inside Engine Spaces 67°C
(140°F)75°C
(167°F)80°C
(176°F)90°C
(194°F)105°C
(221°F)125°C
(257°F)18
5.8 7.5 11.7 16.4 17.0 22.3 16
8.7 11.3 15.6 20.5 21.3 26.7 14
11.6 15.0 19.5 29.8 35.6 45 12
14.5 18.8 27.3 32.8 38.3 44.5 10
23.2 30.0 39.0 45.1 51.0 62.3 8
31.9 48.8 54.6 57.4 68.0 80.1 6
46.4 71.3 78.0 82.0 102.0 111.3 4
60.9 93.8 101.4 110.7 136.0 151.3 3
69.6 108.8 117.0 127.1 153.0 173.6 2
81.2 127.5 136.5 147.6 178.5 200.3 1
95.7 146.3 163.8 172.2 208.3 235.9 0 or 1/0
113.1 172.5 191.1 200.9 242.3 271.5 2/0
130.5 198.8 222.3 233.7 280.5 316.0 3/0
150.8 232.5 257.4 270.6 327.3 364.9 4/0
174.0 270.0 300.3 315.7 378.3 422.8
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Revised: 06/18/06.