tender for work of supply, installation, testing and commissioning of surge suppressor to all buildings of h.b.t. medical college and dr. r. n. cooper mun. gen. hospital-1 work of sitc of surge suppressor to all buildings 2 600 x 600 x 3.15 mm copper plate, 3000mm dip with suitable size cu strip earth pit as per is 3043. the earth pit shall be provided with watering pipe ( class b ) with wire messed funnel, 25x3 cu strip / 2x8swg cu.wire up to chamber, disconnecting links with 600 x 600 mm ( clear ) rcc chamber & 3mm thick heavy duty ci chequered plate cover with hinge. bentonite shall be provided for earth pits. excavation, back filling, removal of excess soil is included in the scope 3 earthing continuity conductors - 25 x 3mm tinned copper 4 vertical air terminal with accessories:providing of air terminals as per is-iec -62305 part-3 16mm rod tapered to 10 mm aluminium rod : meets the technical specification according to din en 50164-2 ( vde 0815 part 202 ) . meets the requirement of vde0185 / 305 ( is / iec 62305 ) 4mtr airterminal: semi-hard ( ealmgsio5 corresponds to din 48801 ) suitable for high wind load. 5 use of scarf folding