TEMCo Industrial Power Supply

About TEMCo  |  Contact Us  |  Other TEMCo Products  |  877.474.8209

0 Gauge Cable

Product Guide & Information

When choosing 0 gauge cable, insulation type, ampacity rating, wire length, and electrical rating of the cable should meet your application requirements.
0 gauge cable

0 Gauge Cable

0 gauge cable is a general term that refers to a wire size using the standard American Wire Gauge system. Typically, when people are searching for 0 gauge cable, they are looking for a large size cable that is capable of handling a high amount of amps, particularly for audio amplifiers, power inverters, arc welders, or batteries. Although a typical copper 0 gauge cable has a max current of approximately 150 amps and is reasonably safe for many large applications, there are other factors that should be considered when choosing the gauge size of your cable. Insulation type, ampacity rating, wire length, and electrical rating of the cable should meet your application requirements.

0 gauge cable
Insulation

The insulation type that is important depends on the environment where you are planning to install your 0 gauge cable. PVC, XLP, Neoprene, EPDM, and other insulation types all have different specifications and are intended for different applications. EPDM and Neoprene insulated 0 gauge cables are highly durable, resistant to high temperatures, can be used for arc welding, and are suitable for harsh environments. PVC and XLP are good insulations to use in automotive settings.

0 gauge cable
Ampacity

The ampacity rating is important when choosing the gauge size of your cables. You will need to look for gauge sizes that can handle the electrical currents (amps) that your applications require. The ampacity rating is the safe current-carrying capacity of the wire before damage occurs to the insulation.

0 gauge cable
Cable Length and Resistance

Since all wire conductors cause resistance to electrons traveling through the wire, the larger the distance the electrons have to travel, the greater the resistance. If you have a specific ampacity you must meet, the length of the 0 gauge cable should be considered.

Current limits for copper wire with the standard American Wire Gauge.

Gauge (AWG) Resistance (Ohms/1000 ft.) Resistance (Ohms/km) Max Current (Amps)
4/0 0.049 0.16072 302
3/0 0.0618 0.202704 239
2/0 0.0779 0.255512 190
1/0 0.0983 0.322424 150
1 0.1239 0.406392 119
2 0.1563 0.512664 94
3 0.197 0.64616 75
4 0.2485 0.81508 60
5 0.3133 1.027624 47
6 0.3951 1.295928 37
7 0.4982 1.634096 30
8 0.6282 2.060496 24
9 0.7921 2.598088 19
10 0.9989 3.276392 15
11 1.26 4.1328 12
12 1.588 5.20864 9.3
13 2.003 6.56984 7.4
14 2.525 8.282 5.9
15 3.184 10.44352 4.7
16 4.016 13.17248 3.7
17 5.064 16.60992 2.9
18 6.385 20.9428 2.3
19 8.051 26.40728 1.8
20 10.15 33.292 1.5
21 12.8 41.984 1.2
22 16.14 52.9392 0.92
23 20.36 66.7808 0.729
24 25.67 84.1976 0.577
25 32.37 106.1736 0.457
26 40.81 133.8568 0.361
27 51.47 168.8216 0.288
28 64.9 212.872 0.226
29 81.83 268.4024 0.182
30 103.2 338.496 0.142
31 130.1 426.728 0.113
32 164.1 538248 0.091
33 206.9 678.632 0.072
34 260.9 855.752 0.056
35 329 1079.12 0.044
36 414.8 1360 0.035
37 523.1 1715 0.0289
38 659.6 2163 0.0228
39 831.8 2728 0.0175
40 1049 3440 0.0137

Call us at 877.474.8209 to speak with an application engineer about your project.