The following information will assist you to select the size of trunking for the required number and size of cable in your installation. |
Cable table |
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Normal conductor size mm | 1.5 | 1.5 | 2.5 | 2.5 | 4 | 6 | 10 | 16 | 25 | 35 | 50 | 70 | 95 | 120 | 150 | 240 | ||||||||||||||||
Factor copper or aluminum | 1.7 | 8.1 | 10.2 | 11.4 | 15 | 22 | 38 | 50 | 75 | 95 | 133 | 177 | 227 | 284 | 346 | 552 |
To determine trunking size: Using the cable table above multiply the quantities of each size of cable by the appropriate factors, to determine the capacity units required.Then, using the trunking size table below select the trunking size which has the nearest higher capacity figure. |
Example :What trunking size is needed to run 24 x 16mm cables and 36 x 6mm cables? |
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Using the trunking size table below, the trunking size required is 100x50 as this has the next higher figure f | capacity units.
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