CableDataSheet, Cable and Wire Technical Consulting Service

Paper Insulated Lead Covered Service Cables

The service cables below where used on the network prior to the introduction of plastic cables.
Cable Construction
A. Copper conductors – 2 or 4 core versions
• Range of conductor sizes on the network 4 - 35mm2
• 2 core overall diameter range between 19 – 24.6mm
• 4 core overall diameter range between 22 – 31.9mm
B. Layers of paper insulation impregnated with mineral oil compound – thickness 1.0 to 1.2mm between the conductor and sheath
C. Additional (belt) insulation layer
D. Lead sheath, covered with bitumen coated paper and hessian layers, as a bedding for the armour wires
E. Steel tape armours
F. Bitumen coated hessian tape serving (oversheath)