NSHES-Material and labour charges towards cutting and welding of supporting L-angles and C-channels later placing and welding of cable trays to supporting L-angles from newly constructed cables trenches at OD yard to unit-2 cooling water floor area for laying of 3core 240 sq. mm armoured aluminium cable between 11KV/415 V RST-1 and RST-2 station incoming supply transformers and R-4 and R-6 breakers on reserve board pertaining to Indoor Electrical maintenance sub division at N.S. Power House, Nagarjuna sagar