序 规 电缆 平均外径
标称 下限 上限
号 格 外径
1 2×0.75 6.44 6.0 8.2
2 2×1.0 6.96 6.6 8.8
3 2×1.5 8.51 8.0 10.5
4 2×2.5 10.63 9.5 12.5
5 *2×4 12.56 10.6 13.7
6 *2×6 14.25 11.8 15.1
7 3×0.75 7.00 6.50 8.8
8 3×1.0 7.35 7.00 9.2
9 3×1.5 9.00 8.6 11.0
10 3×2.5 11.27 10.0 13.0
11 *3×4 13.33 11.3 14.5
12 *3×6 15.13 12.6 16.1
13 4×0.75 7.61 7.1 9.6
14 4×1.0 8.00 7.6 10
15 4×1.5 10.03 9.6 12.5
16 4×2.5 12.55 11.0 14.0
17 *4×4 14.83 12.7 16.2
18 *4×6 16.83 14.0 17.9
19 5×0.75 8.49 8.0 11.0
20 5×1.0 8.92 8.5 11.5
21 5×1.5 10.94 10.5 13.5
22 5×2.5 13.93 12.5 15.5
23 *5×4 16.46 14.1 17.9
24 *5×6 18.87 15.7 20.0
25 *6×0.75 9.19 8.2 10.7
26 *6×1.0 9.87 8.7 11.5
27 *6×1.5 12.09 10.9 14.0
28 *6×2.5 15.37 13.2 16.9
29 *6×4 18.16 15.5 19.8
30 *6×6 20.79 17.4 22.1