Electrical Trunking. Lincoln Robinson Caliphor Fagan Richard Lawrence Wesley Esson Anthony Gore . What is Electrical Trunking?.
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Over –head Bus-Bar Trunking
Single Compartment Trunking: Can be used when one type of cable i.e. electrical or data or telephone cables.
with conduits running from the trunking to the point controlling the current using apparatus. When an alteration or extension is required it is easy to drill a hole in the side of the trunking and run a conduit to the new point. The new wiring can then be drawn through the new conduit and the existing trunking to the supply point.
Trunking may be secured direct to a surface or suspended by means of brackets.
As trunking material is thin, there is no room for countersunk holes. Roundhead screws are suggested, unless of course the fixing surface requires bolts. There are occasions when the trunking has to be suspended by means of brackets.
Note: (i) These factors are for metal trunking and may be optimistic for plastic trunking where the cross-sectional area available may be significantly reduced from the nominal by the thickness of the wall material. (ii) The provision of spare space is advisable; however, any circuits added at a later date must take into account grouping