Skirting Trunking

Skirting Trunking Points : Skirting Trunking Wiring System Skirting trunking is used extensively in commercial buildings, laboratories, hospitals etc. It consists of a shallow steel trunking, approximately 44mm deep with two or more compartments. One compartment is usually used for socket or lighting Wiring and one for bell or internal telephone wiring.

The trunking can be shaped to form the skirting. It is fitted round the outer walls of a building .where sockets, telephones connections are likely to be required.

The regulations governing wiring in conduit also apply to wiring in trunking. MI sections of trunking, bends and other accessories must be effectively earthed. According to IEE regulations, gives the sizes of protective cables required and it will be seen that the size depends upon ‘the size of the largest cable contained in trunking. To ensure that cables can be installed, a space factor of 45% should be used.

The rating of cables installed in trunking is also affected by ambient temperatures and a de-rating of P.V.C insulated cables will be necessary if the ambient temperature exceeds 30°c.