electric cable equivalents
American Wire Gauge to metric (ISO)

The American Wire Gauge is based on the wire's diameter; the metric conductor sizes are based on the nominal area of the cross section of the conductor. The actual cross-sectional areas depend in part upon the stranding of the cable.

A cable with the metric value shown will have at least as much carrying capacity as the AWG cable for which it is being substituted. In other words, values have always been rounded up. For that reason, do not use this table to find the AWG equivalent to a metric cable. For that, go here.

The table assumes the metric-sized cable will be substituted for an AWG-sized cable of the same type. It cannot be used, for example, to find a metric-sized aluminum cable to substitute for a copper AWG cable. If the types are dissimilar, consult the cable manufacturer's literature to determine capacity.

American
Wire Gauge
(AWG)
Substitute this Metric
Nominal Cross-sectional Area,
square millimeters
6/0 185
5/0 150
4/0 120
3/0 95
2/0 70
0 70
1 50
2 35
3 35
4 25
5 25
6 16
7 16
8 10
9 10
10 6
11 6
12 4
13 4
14 2.5
15 2.5
16 1.5
17 1.5
18 1
19 0.75
20 0.75
21 0.5

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