Metric Cable Sizes (mm²)

Every common metric size with its Method C rating and a representative maximum run.

Size	Rating (A)	mV/A/m	~Max run @ 80% load, 230 V, 5%
1.5 mm²	20	30.0	24 m
2.5 mm²	27	18.0	30 m
4 mm²	37	11.2	35 m
6 mm²	47	7.5	41 m
10 mm²	64	4.5	50 m
16 mm²	85	2.8	60 m
25 mm²	112	1.8	71 m
35 mm²	138	1.3	81 m
50 mm²	168	0.9	95 m
70 mm²	213	0.6	105 m
95 mm²	258	0.5	118 m
120 mm²	299	0.4	128 m

Built & maintained by Murugan Vellaichamy · Every calculation verified against NEC Chapter 9 Table 8 & Table 310.16 published values · Informational reference — not engineering advice