Nuclear power cable structure:
Current-carrying conductor: Copper
Thermal barrier: Taping with two mica tapes.
Insulation: XLPE (color or digital coded conductors).
Core arrangement and twisting: Insulated conductors, screened cores and screened pairs are twisted in a cable core by concentric layer.
Taping: fiberglass tape.
Over sheath: PVC-compound of low fire hazard.