bids are invited for earthing system material for construction of earthing pits , material for construction of concrete box with lid , copper plate , copper strip , material for construction of foundation of rcc base for erecting gi mast poles under ground level. , material for construction of rcc base for erecting gi mast poles above foundation work on ground level , conventional lightning arrestor system , pvc insulated multi strand copper cable for la , brazing of interconnection , material for construction of inspection chamber , pvc pipe for earth pits , common salt , charcol , gi galvanized mast poles , frangible fibre reinforced plastic frp poles , self supporting heavy duty folding ladder , installation testing and commissioning sitc of lightning arrestor system along with conventional total quantity : 1502