This type of wiring is also adopted for low voltage installation.
This system is more of less similar to CTS wiring except that the cable used is different in this wiring.
In this system conductors used are insulated with V. I. R and the coverd with an outer sheath of lead aluminum alloy containing 95% lead and 5% aluminum.
Advantages
1 Conductor are protected against mechanical injury.
2 It has longer life.
3 It is suitably employed under damp situation.
4 Conductor are protected against chemical.
Disadvantages
1 Cables are costlier than CTS or TRS wires.
2 In case of leakage there is eveey risk of shock.
3 Skilled labour and proper supervision is required.
Application
This wiring system is suitable for low voltage installation.
It may be used in places exposed to sun and rain provided no joint is exposed.
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