Which among these is a type of internal wiring? I. Cleat wiring II. Conduit wiring III. CTS wiring
Right Answer is:
I, II & III
Electrical wiring is done in residential and commercial buildings to provide power for lights, fasts, pumps, and other domestic appliances are known as domestic wiring. There are several wiring systems in practice such as tree systems and distribution systems.
Types Of wiring
The following are the different types of wiring systems used for domestic electrical installation.
- Cleat wiring system
- The wooden casing-capping wiring system
- PVC wiring or CTS or TRS wiring system
- Lead sheathed wiring system
- Conduit wiring system.
This system of wiring is the cheapest one. This system is used for insulated cables like rubber insulated cable, PVC cable, etc. The cables are run over cleats made of porcelain. The cleats are generally in pairs having the bottom and top halves. The bottom half is grooved to receive the wire and the top is for cable grip.
This wiring is suitable for temporary installations where cost is the main criterion. Since this type of wiring installation is affected by weather conditions therefore it is mainly used as internal wiring.
PVC wiring or CTS or TRS wiring system:
This system is very widely used. In such wiring, the wires used are sheathed with the tough rubber of P.V.C. wires and they are clipped on the wooden button with clips. The button is ﬁxed on the wall or ceiling.
This wiring is suitable for damp climates, but cannot withstand much heat and so is not suitable for places of very hot weather and there is also the danger of mechanical damage and ﬁre hazard. C.T.S. wires are not suitable for outdoor use. Therefore, they should not be exposed to direct sunlight and where there are corrosive acid fumes.
Conduit wiring system
In conduit wiring, wires are carried through steel or iron pipes giving good protection from mechanical injury or ﬁre risks. The conduits are buried inside the walls on wooden gutties and the wires are drawn through them with fish (steel) wires. This system is the best and most desirable system of wiring for workshops and public buildings.
Nowadays P.V.C. conduit pipes are also available which do not require threading. Jointing is done with a special mode solution. These are ﬂexible and can be bent easily. For concealed wiring, the pipes are directly buried in the wall and roofs, and then wires are drawn through them.