These type of cables are suitable for energy supplying are installed in open air , underground , in water , indoors , in cable ducts , power stations , for industry and distribution boards as well as in subscriber networks , where mechanical damages are not to be expected .
conductor : Annealed copper of class 1 (solid) or of class 2 (stranded) or of class 5 (flexible ) according to
IEC 60228 [ ISIRI (3084) ] .
insulation : PVC compound of type PVC/A .
core assembly : The cores in multi core cables are twisted together.
inner covering : The twisted cores are covered by an extruded PVC compound or a lapped helical tape .
sheath : PVC compound of type PVC/ST1 . Sheath color is normally black .
Standard : IEC 60502 [ ISIRI 3569 ] with rated voltage 600/1000 volt .