Group Rating Factors For more than One Twin or Multicore Armoured Or Unarmoured Cables In Horizontal Formation Laid In Direct Ground:
| No. of cables |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
| Cables laid touching |
0.81 |
0.7 |
0.63 |
0.59 |
0.55 |
0.52 |
0.5 |
0.48 |
0.47 |
0.45 |
0.44 |
| Cables laid 15 cm apart |
0.87 |
0.78 |
0.74 |
0.70 |
0.68 |
0.66 |
0.64 |
0.63 |
0.62 |
0.61 |
0.6 |
| Cables laid 30 cm apart |
0.91 |
0.84 |
0.81 |
0.78 |
0.77 |
0.75 |
0.75 |
0.74 |
0.73 |
0.73 |
0.72 |
| Cables laid 45 cm apart |
0.93 |
0.88 |
0.86 |
0.84 |
0.83 |
0.82 |
0.81 |
0.81 |
0.8 |
0.8 |
0.8 |
| Cables laid 60 cm apart |
0.95 |
0.9 |
0.89 |
0.87 |
0.87 |
0.86 |
0.86 |
0.85 |
0.85 |
0.85 |
0.84 |