Showing posts with label diploma. Show all posts
Showing posts with label diploma. Show all posts

Sunday, November 1, 2020

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