Calculation factor according to German Standard VDE 0276-1000 (1999), Table 11, first part, applicable to multicore cables in air with spacing of one cable diameter.
arrangement | layers | cables 1 | 2 | 3 | 4 | 5 | 6 |
---|---|---|---|---|---|---|---|
on the surface | 1 | 0.97 | 0.96 | 0.94 | 0.93 | 0.915 | 0.9 |
tray without holes | 1 | 0.97 | 0.96 | 0.94 | 0.93 | 0.915 | 0.9 |
2 | 0.97 | 0.95 | 0.92 | 0.9 | 0.88 | 0.86 | |
3 | 0.97 | 0.94 | 0.91 | 0.89 | 0.865 | 0.84 | |
4 | 0.97 | 0.937 | 0.907 | 0.887 | 0.862 | 0.837 | |
5 | 0.97 | 0.934 | 0.904 | 0.884 | 0.859 | 0.834 | |
6 | 0.97 | 0.93 | 0.9 | 0.88 | 0.855 | 0.83 | |
tray with holes | 1 | 1.0 | 1.0 | 0.98 | 0.95 | 0.93 | 0.91 |
2 | 1.0 | 0.99 | 0.96 | 0.92 | 0.895 | 0.87 | |
3 | 1.0 | 0.98 | 0.95 | 0.91 | 0.88 | 0.85 | |
4 | 1.0 | 0.977 | 0.947 | 0.907 | 0.877 | 0.847 | |
5 | 1.0 | 0.974 | 0.944 | 0.904 | 0.874 | 0.844 | |
6 | 1.0 | 0.97 | 0.94 | 0.9 | 0.875 | 0.84 | |
horizontal ladder | 1 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
2 | 1.0 | 0.99 | 0.98 | 0.97 | 0.965 | 0.96 | |
3 | 1.0 | 0.98 | 0.97 | 0.96 | 0.945 | 0.93 | |
4 | 1.0 | 0.977 | 0.967 | 0.954 | 0.939 | 0.924 | |
5 | 1.0 | 0.974 | 0.964 | 0.947 | 0.932 | 0.917 | |
6 | 1.0 | 0.97 | 0.96 | 0.94 | 0.925 | 0.91 | |
vertical supports | 1 | 1.0 | 0.91 | 0.89 | 0.88 | 0.875 | 0.87 |
2 | 1.0 | 0.91 | 0.88 | 0.87 | 0.86 | 0.85 |