bids are invited for custom bid for services - rectification and repair of various faults and breakdowns of electrical systems at balgi colony of srk blg sub area of korba area for 365 days operation and maintenance of electrical systems/electrical installations rectification of earth faults rectification of short circuiting rectification of single phasing rectification of insulator damage, conductor damage by climbing pole of all ht and lt circuits rectification of isolators rectification of starter of all surface pumping stations rectification of lighting transformers of all colony substation, dy. gm office, filter plant, store, main substation. fault checking and repairing of lights at various places such as colony street lights, dy. gm office, hospital, filter plant, store and substations cable lying and jointing of all isolators, starters, lighting transformers and all pumping motors during breakdown jumpering/jumper checking and maintenance ht & lt repairing of earth wire, guarding, stay and stay insulators. fixing and operational maintenance and repair of all ictp, mccb, rccb, overload relays, idmt relay, earth leakage relay etc. of substations. total quantity :