Cores: 1 core, 3 core 1. Conductor: copperor aluminum 2. Semiconductive conductor screen 3.Insulation: xlpe (cross-linked polyethylene) 4. Semiconductive insulation screen 5. Metallic screen(copper tape screen) 6. Pvc bedding 7. Armour: Single core cable: aluminum wire Three core cable: galvanized steel wires armour or galvanized steel tape armour 8. Pvc outer sheath