No. of Cores x Nominal Cross Sectional Area of Conductor |
Max DC Conductor Resistance at 20°C |
Nominal Insulation Thickness |
Nominal Sheath Thickness |
Max Overall Diameter of Cable |
Current Rating |
mm2 |
Bare (Ω/km) |
Tinned (Ω/km) |
mm |
mm |
mm |
Amps |
4C x 0.5 sqmm |
39.0 |
40.1 |
0.6 |
0.9 |
8.0 |
4 |
4C x 0.75 sqmm |
26.0 |
26.7 |
0.6 |
0.9 |
8.4 |
8 |
4C x 1 sqmm |
19.5 |
20.0 |
0.6 |
0.9 |
8.8 |
12 |
4C x 1.5 sqmm |
13.3 |
13.7 |
0.6 |
1.0 |
10.4 |
16 |
4C x 2.5 sqmm |
7.98 |
8.21 |
0.7 |
1.0 |
12.0 |
22 |
4C x 4 sqmm |
4.95 |
5.09 |
0.8 |
1.0 |
13.6 |
29 |
4C x 6 sqmm |
3.30 |
3.39 |
0.8 |
1.2 |
15.5 |
37 |
4C x 10 sqmm |
1.91 |
1.95 |
1.0 |
1.4 |
19.5 |
51 |
4C x 16 sqmm |
1.21 |
1.24 |
1.0 |
1.4 |
23.0 |
68 |
4C x 25 sqmm |
0.780 |
0.795 |
1.2 |
1.6 |
28.5 |
86 |
4C x 35 sqmm |
0.554 |
0.565 |
1.2 |
1.7 |
32.7 |
110 |
4C x 50 sqmm |
0.386 |
0.393 |
1.4 |
2.0 |
38.6 |
145 |
Please refer to IS 3961 for Derating factors for the Current Rating.