... ,PVC insulated ,PVC sheathed power cableFor laying indoors, in tunnel or cable trench,unable to bear extermal mechanical forces ... armoured ,PVC sheathed power cableFor laying indoors, in cable trench or direct in ground ,able to bear external mechanical forces, but ... wire armoured,PVC insulated power cableFor laying indoors, in cable or direct in ground ,able to bear external mechanical forces, but ...