PVC Insulated Single-Core High Temperature Cables 105°C or 130°C PVC insulated single-core (high temperature) cables, heat resistant wires with solid or flexible conductor. PVC HIGH TEMPERATURE CABLES STRUCTURE Electrolytic plain or tinned copper, Class 1 solid conductor and Class 5 stranded conductor 105 °C rated PVC insulation or high thermal stability PVC insulation suitable for applications up to 130 °C