In this system of wiring lead covered cables are used on a batten or sometimes without batten, so it is known as Lead sheathed cable wiring. The wire is supported by means of the clips. An earth wire runs along to maintain the earth continuity. The wires can be single or twin core.
Advantages of Lead Sheathed Wiring
- These wires are safe from fire, moisture and mechanical damages.
- It has long life.
- It can be done in damp places, open areas even which are exposed to sun and rains also.
- It has good appearance.
Disadvantages of Lead Sheathed Wiring
- Skilled worker required so the labour is costly.
- It is costly because of lead covering.
- Extension is not so easy.
- Fault location is not easy.
The power wiring should be carried out separately from the lighting circuit. In this wiring all the joint boxes and ends of the wires are sealed with compound, so that moisture may not enter in the cable or wires.
Uses of Lead Sheathed Wiring
It is not a common type of wiring. It is used in the places where dampness, exposing to run and rain etc. are there. It should not be used the places, where in chemical corrosion may occur.