bids are invited for repair maintenance of 63 kva taking down carefully transformer 63kva from pole oblique plinth by dismantling disconnecting ht and lt side , material and labour for shifting of the transformer mounted on plinth pole from existing location to workshop and vice , material and labour hv copper coil replacement , material and labour lv copper coil replacement , material and labour silica gel breather with assembly , rubbersied cork sheet gasket of 6mm thickness , material and labour hv bushing , material and labour lv bushing , material and labour for transformer oil , excavation in trenches not exceeding 1 point 5 m wide and not exceeding 1 point 5 m deep , returning filling in trenches including spreading levelling watering and well ramming in layers not exceeding 25cm , removing excavated material not exceeding 50m and depositing where directed , material and labour for sand filling with clean dry find sand unwashed including , supply and laying unreinforced pre cast flat concrete cable protection cover , supply and laying xlpe insulated screened pvc bedded galvanised steel strip total quantity : 226