bids are invited for supply 1 20 copper plate 600mmx600mmx3015mm , copper strip atleast 25mm width 3mm thickness , copper cable 4 mm od , copper rod lightning arrestor 0.75 inch dia 4 feet , copper clad earthing rods 6 feet , pvc insulated multi strand copper cable for la 50 sq mm , pvc pipe for earth pits 40mm dia 10 feet length 5 mm thickness , common salt granular about 1 to 3 cm granules , charcoal granular about 1 to 3cm granules , primary power surge protector 3 phase input type ii , secondary series power filter msspf 1 phase output type ii 32 amps 1 phase , dc power cable 1.5 sqmm , ac power cable 2.5 sqmm , extension boards 4x5 and 15 amp socket with individual switch , aluminium ladder a type 10 feet , cat 6 cable , transient earth bonding device , ceramic insulator 1 to 3 ft length total quantity : 3103