Solid/Stranded Flexible (Tinned / Bare) copper conductor, insulated with PVC/PE/XLPE, 2 cores to form a pair, 3 cores to form a triad, such pair such or triad individually screened with Lapping/Alumylar taping or Braiding such units laid up to form cable,polyster taped , overall screened or braiding if required and outer sheathed with PVC/PE/LSZH.