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