complete rewinding & repairing of 1000kva single phase 550v / 220v lighting transformer installed at canteen 6 no. dhawrah make gec under loyabad colliery-2 new changing of primary copper coil 3 new changing of secondary copper coil 4 new extra copper changing for secondary 5 insulating materials cost 15 % 6 covering of copper strip tpc 7 soldering materials ( rupaton ) 8 tank cleaning & painting 9 hv side 550v porcelain insulator 10 hv side brass stud 5 / 8 14 inch with thread nut washer & check nut set 11 lv side procelain insulator 12 lv side brass 3 / 4*14 with nut washer &check nut set 13 copper strip 2*1 / 4 for connecting transformer to bushing 14 cork sheet 1 / 4 15 transporting charge 16 fevicol 17 labour charges ( a ) electrician gr-i ( 03*04 shift ) 18 labour charges ( b ) electrician gr-ii ( 03*04 shift ) 19 less scrape valve 20 total impact of gst for the purpose of ctc