complete rewinding of 50 kva, 550 / 220 volt sl.no.790285 lighting transformer for manager bungalow of akwmc under katras area- item description / heading 2 relacementof new dcc copper wire 3 insulating materials 15% 4 less scrap value ( - ) 5 replcement of cork sheet 6 mm 6 replacement of insulator with stud for secondary 7 replacement of insulator with stud for primary 8 connection and jointing tin solderstick 80% 9 transporting both side 10 labour charge:- ( a ) electrician gr-i2 headx 5 shift 11 ( b ) electrician gr-ii 2 heads x 5 shift 12 total impact of gst for the purpose of ctc