Factor Table 11, second part

Calculation factor according to German Standard VDE 0276-1000 (1999), Table 11, second part, applicable to multicore cables in air with touching cables.

The factors are according to CENELEC Report R064.001 for Standard HD 384.5.523:1991.
A cable tray is a continuous plate with walls on the side but without a cover.
A cable tray is considered with holes when the holes cover at least 30 % of the total plate surface.

Symbol

$F_{T11,t}$

Unit

p.u.

Choices

arrangement	layers	cables 1	2	3	4	5	6	7	8	9
on the surface	1	0.97	0.85	0.78	0.75	0.73	0.71	0.7	0.69	0.68
tray without holes	1	0.97	0.85	0.78	0.75	0.73	0.71	0.7	0.69	0.68
	2	0.97	0.84	0.76	0.73	0.705	0.68	0.7	0.69	0.63
	3	0.97	0.83	0.75	0.72	0.69	0.66	0.644	0.627	0.61
	4	0.97	0.824	0.744	0.71	0.68	0.65	0.637	0.614	0.6
	5	0.97	0.817	0.737	0.7	0.67	0.64	0.624	0.607	0.59
	6	0.97	0.81	0.73	0.69	0.66	0.63	0.614	0.597	0.58
tray with holes	1	1.0	0.88	0.82	0.79	0.775	0.76	0.75	0.74	0.73
	2	1.0	0.87	0.8	0.77	0.75	0.73	0.714	0.697	0.68
	3	1.0	0.86	0.79	0.76	0.735	0.71	0.694	0.677	0.66
	4	1.0	0.854	0.784	0.75	0.725	0.7	0.685	0.67	0.654
	5	1.0	0.847	0.777	0.74	0.715	0.69	0.676	0.662	0.647
	6	1.0	0.84	0.77	0.73	0.705	0.68	0.667	0.654	0.64
horizontal ladder	1	1.0	0.87	0.82	0.8	0.795	0.79	0.787	0.784	0.78
	2	1.0	0.86	0.8	0.78	0.77	0.76	0.75	0.74	0.73
	3	1.0	0.85	0.79	0.76	0.745	0.73	0.72	0.71	0.7
	4	1.0	0.844	0.78	0.75	0.734	0.717	0.707	0.697	0.687
	5	1.0	0.837	0.77	0.74	0.724	0.704	0.694	0.684	0.674
	6	1.0	0.83	0.76	0.73	0.71	0.69	0.68	0.67	0.66
vertical supports	1	1.0	0.88	0.82	0.78	0.755	0.73	0.727	0.724	0.72
	2	1.0	0.88	0.81	0.76	0.735	0.71	0.707	0.704	0.7
on wall	1	0.95	0.78	0.73	0.72	0.86	0.68	0.674	0.667	0.66