1.Conductor
Plain annealed copper or aluminum
2.Insulation
General purpose PVC compound
3.Colour of cores
Single core - red or black
2 cores - red and black
3 cores - red, yellow and blue
4 cores - red, yellow, blue and black
4. Formation
1) Single core
2) 2,3, or 4 cores - stranded together and the interstices may be filled with the sheathing compound or textile. A nonhygroscopic binder tape may be applied over the laid-up cores.
5.Bedding
Black general purpose PVC compound
6.Armour
Single core - Aluminum wire
2,3, or 4 cores - Galvanized steel wire
7.Sheath
Black general purpose PVC compound
Power cables for energy supply are used for industry and distribution boards, power stations, house connecting boxes and street lighting
Overall, where increased electrical and also mechanical protection are required. Those cables are installed in open air, in underground, in water, indoors and in cable ducts.
