Stranded/Solid Copper Conductor, Extruded PE / PVC / HR-PVC / XLPE Insulated, Core / Pair / Triad / Quad laid up together overall shielded with Mylar / Drain Wire / AI-Mylar, Extruded PE / PVC(FR/FRLS) / LSZH Inner sheathed, Unarmoured/GI Steel round Wire / Strip / GI Steel Wire braided, Extruded HDPE / PVC(FR/FRLS) / LSZH Outer Sheathed generally as per BSEN:50288-7 / BS:5308(P-1&2) / IEC:60189 / VDE:0207.