What's the construction of 4 core steel wire armoured cable ? Conductor Copper conductor( Class 2 stranded copper conductor according to BS EN60228 (previouslyBS 6360) Insulation XLPE(cross-linked Polyethylene according to IEC 60502-1) Filler Polypropylene rope Wrap tape Non-woven fabric Outer Sheath PVC(polyvinyl chloride according to IEC60502-1) What's the characteristics of power cable ? Voltage Rating (Uo/U) 0.6/1 kV Test Voltage 3.5 KV (5 min) The max temperature of short circuit 250 °C(The longest time is 5s) Max Operating Temperature 90 °C The lowest circumstance temperature of installation 0 °C Temperature Rating Fixed: -20/+90 °C Outer Sheath Color Black (customized) Minimum Bending Radius Single core: 20OD ± 5% Multi-core: 15OD ± 5% (Remark: OD is outer diameter of power cable)