Installation of Trunking

Installation of Trunking Points : Installation of Trunking, Materials of Trunking, Common Sizes of Trunking The installation layout must be planned before starting to work. If the installation is in a new or altered building, all internal structural and wall finishes should have been completed. The trunking should be cut using a fine tooth saw. Clean off any bums or swarf after making the cut. The main component of the trunking is generally fitted to the surface of the wall by using screws. It is advise- able to use Washers under the screw heads. Trunking should be fixed at intervals of not more 5 00mm and there should also be fixings within about 100mm. of the end. Once the trunking has been fixed, the cables can be run. Where there are vertical runs of trunking pin racks should be fitted inside the trunking to support the cables. These pin racks consist. of steel pins, sheathed by an insulating material mounted on a back late of the trunking, made the earth continuity between’ sections of trunking. In case of non-metallic trunking, it is advisable to run an insulated conductor for earthing purpose. Materials of Trunking (i) Tees
(ii) Bends
(iii) Flanges
(iv) Reducer channels
(v) Elbows
(vi) Connectors
(vii) Couplers
(viii) Trunking
(ix) Screws
(x) Washers Common Sizes of Trunking 1.5 x 1.5
2 x 1.5
3 x 1.5
3 x 2
4 x 1.5
4 x 2
3 x 3
6 x 1.5
4 x 3
6 x 2
6 x 3
6 x 4
6 x 6
9 x 4