INSULATION: The PVC covering over conductor is called insulation and provided by extrusion process. The insulated conductor is called a core. As per IS: 694 the insulation should be of type A PVC compound as per IS-5831 and it is suitable for 70° C continuous operation.
LAYING UP: In case of multi core cables the cores are laid up with suitable lay.
SHEATH: The PVC coating on core and on laid up cores in case of multi-core cables is called SHEATH. As per IS-694 it should be of type ST-1 PVC compound as per IS-5831.IT is suitable for 70° C continuous operation.
DELIVERY LENGTH: The cables are generally delivered in 90 Meters coils wrapped with polyethylene and packed in card board boxes. The bigger size cables are supplied on wooden drums.