Suitable for all types of industrial low voltage connections, urban grids, building installations. Fire retardant. Outer sheath : Flexible PVC, grey colour. Conductor : Electrolytic copper, class 2 (flexible) based on IEC 60228 and IEC 60228. Flexibility equivalent to Class 5. Insulation : Cross-linked polyethylene (XLPE) The standard identification of insulated conductors is the following: 1 x Black 2 x Blue + Brown 3 G Blue + brown + green + yellow 4 x Black + brown + grey + greenyellow 5 G Brown + Black + Grey + Blue + Yellowgreen