Model: Cu(Al)/PVC/PVC: Cu or Al conductor, PVC insulated, PVC sheath Cu(Al)/PVC/STA/PVC: Cu or Al conductor, PVC insulated, steel tape armoured, PVC sheath Cu(Al)/PVC/SWA/PVC: Cu or Al conductor, PVC insulated, steel wire armoured, PVC sheath. Votage Class: LV: 0.6/1KV MV: 1.8/3, 3.6/6, 6/10, 8.7/10, 8.7/15, 12/20, 21/35, 26/35kV.