Wiring System and classification

Wiring system :

1 Cleat wiring system 

2 Wooden casing capping wiring system 

3 CTS or TRS wiring system 

4 Lead sheathed or metal sheated wiring system 

5 Conduit wiring system 

Wires & types of wire

Wire & types of wire 

Wire Material: 

1 Copper 

2 Aluminum 

Insulation of wire:

1   VIR: Vulcanised  Indian rubber 

2  TRS: Tough Rubber Sheath

3  PVC: poly vinyl chloride 

4  paper 

5  Enemel

6  Cotton

Size of wire:

0.75mm sq 

1 mm

1.5mm

2mm

2.5mm

4sqmm 

After 4 sq mm cable size start 

Core of wire : 

1 2 core

2 3 core

3 4 core