Trunking Wiring System

Trunking System Points : Trunking Wiring System Trunking for industrial and commercial installation is often used in place of the larger sizes of conduit. Trunking system is more flexible than conduit systems. Trunking is available in both metallic and non-metallic type. We can install the trunking easily in surface fitting. Surface metal turking come in various sizes and types of material. It may include heavy industrial listed surface metal trunking that can withstand physical damage and specially approved for industrial locations.

Trunking is also painted to match the decor and provide a quick, decorative, efficient way to comply with modem-day requirements for convenience outlets located throughout the facility. Surface metal trunking must be of such construction as to distinguish them from other raceways.

Their elbows, couplings and other similar fittings shall be designed so that the sections can be electrically and mechanically coupled together. In multistory buildings trunking of suitable capacity .and with the necessary number of compartment is usually provided.

In trunking system the telecommunications companies to insist that their cables are completely segregated from all other wiring system. Therefore, for this purpose, install 3 or 4 compartment trunking. Cables feeding emergency; lighting and fire alarms must be segregated from the wiring of any other circuits.

Many reputable manufacturers can now supply trunking ranging from 1.5 x 1.5 inch to 4 x 9 inch or even larger, with two or more compartments.

Trunking is available in length of 6-ft to 8-ft where there are vertical runs of cables in trunking, then pin racks should be fitted inside the trunking to support the weight of these cables.

These pin racks consist of steel pins, sheathed by an insulating material and fitted at intervals of Sm. Where vertical trunking passes through floors it must be provided with internal fire barriers. These fires barriers consist of nonflammable materials. When large cable are installed in trunking care must be taken to ensure that all cables are of sufficient radius to avoid damaging. In this system P.V.C / V.I.R cables are commonly used.