Conductor: conductor shall be annealed in pure copper according to BS 6360.
Insulation material: insulation material shall be PE type 03 specified in type PVC TI1 and BS6234 specified in BS6746.
Screen: AL/PET tape. The minimum overlap should be 25%.
Paving: the required logarithms should be combined using reverse or reciprocating laying techniques.
The construction of cables should make paired cables in concentric circles.
Public screen: each pair should have a layer of pressure screen tape. The minimum overlap should be 25%.
Bedding: according to the requirements of BS 6746, a TM1 or 6 type black PVC composite material should be used on the bed.
Lead sheath: according to BS801 regulations, a sheath made of lead alloy is used on the PVC cushion.
Separate sheath: the TM1 type black PVC composite material will be covered with extruded bedding according to the requirements of BS 6746.
Armor: single galvanized steel wire armour, its size should be spiral covered in the table.