SHEET METAL BUS BAR CHAMBERS (COPPER STRIPS): Supply and erection of sheet metal bus-bar chamber (factory fabricated) duly powder coated on existing surface with required no. of bus-bar strips of suitable length and cross-sectional area. Copper strips of suitable length and cross-sectional area should be tinned and mounted on DMC/ SMC moulds at sufficient distance enclosure made of M.S. sheet 1.6mm thick with hinged cover and lock, fitted with dust excluding gaskets and secured with sufficient no. of cadmium plated iron screws and of given overall dimensions and to be fixed with G.I. bolts and nuts/ rag bolts and nuts etc. complete with all accessories including connections with suitable size of thimbles, bonding to the existing earth and painting etc. as desired by the Engineer-in-charge at site. Sheet metal bus bar chamber suitable for 200amp. 415 volts capacity with 4 tinned copper strip bus bars each of length 635mm and cross sectional area (25mm x 5mm) enclosure having over all dimensions (780mm x 510mm x 215mm) nominal