Cable size convention developed by American Wire Guide (AWG) to establish standards

for copper stranding content, stranding outside diameter, and insulation diameters.

Terminals, lugs, and connectors are sized to accommodate specific wire sizes. Lug sizes

run from 8 Gauge to 1000MCM (insulated terminals are for smaller, "primary wire" e.g.

22Ga.,14Ga,12Ga.) A table of lug wire sizes follows:

 

8 Gauge        .186           1/0 AWG         .410           250MCM          .625

6 Gauge        .232           2/0 AWG         .460           350MCM          .750

4 Gauge        .286           3.0 AWG         .510           500MCM          .830

2 Gauge        .337           4/0 AWG         .560          750MCM          1.030

1 Gauge        .360                                                 1000MCM         1.120