improvement and repair of tubewells at golf view apartment saket and near h. no. h / 47-48, h- block saket in ward no. 154 under south zone. 1 sitc of pvc insulated pvc sheathed copper conductor flexible cables complete as required. ( polycab / kei / rr make ) ( a ) 3*6 mm flat submersible 2 supply, lowering and fixing following size of g.i. pipe ( m-class ) i / c cutting threading on both sides etc. isi marked etc as reqd. 40mm ( nominal bore ) 3 supply, lowering and fixing following size of g.i. pipe ( m-class ) i / c cutting threading on both sides etc. isi marked etc as reqd. 50mm ( nominal bore ) 4 s & f following size of g.i. socket. as reqd. 40mm 5 s & f following size of g.i. socket. as reqd. 50mm 6 s & f following size of g.i. union. as reqd. 40mm 7 s & f following size of g.i. union. as reqd. 50mm 8 s & f following size of g.i. elbow. as reqd.. 40mm 9 s & f following size of g.i. elbow. as reqd.. 50mm 10 development of tube well with suitable capacity of air compressor i / c lowering of the necessary induction pipe or line i / c cost of fuel, hire charges of compressor etc as reqd. the development shall be considered complete when gravel stop sinking, discharge ceased to improve and the sand contents are not more than 10 ppm after 20 minutes of starting the pump complete as reqd. 11 s & f ms clamp made up of iron flat of size 50x6 mm with 4 nut bolt for holding the gi pipe pipe as reqd.32 mm 12 supplying, lowering, testing and commissioning of vertical type, multistage, totally enclosed water filled deep well submersible pumping set complete i / c connection etc. as reqd. single phase 3.0 hp having discharge of 100 lpm approx. at 52 m head 13 supplying, lowering, testing and commissioning of vertical type, multistage, totally enclosed water filled deep well submersible pumping set complete i / c connection etc. as reqd. three phase 5.0 hp having discharge of 108 lpm approx. at 92 m head. 14 supply, installation, testing and commissioning of cubical type control panel board for single phase & three phase submersible pumping set of following rating complete with contactor, relay , mcb , condenser , voltmeter, ammeter and indication lamp etc including connections etc as reqd. 5 hp ( three phase ) 15 supplying and fixing following sizes of insulated steel flexible safety rope for holding submersible pump set i / c clips etc complete as reqd.6 mm 16 providing and laying earth connection from earth electrode with 6 swg dia g.i. wire in 15 mm dia g.i. pipe from earth electrode including connection with g.i. thimble excavation and re-filling as required. 17 providing and fixing 6 swg dia g.i. wire on surface or in recess for loop earthing along with existing surface / recessed conduit / submain wiring / cable as required. 18 earthing with g.i. earth pipe 4.5 metre long, 40 mm dia including accessories, and providing masonry enclosure with cover plate having locking arrangement and watering pipe etc. ( without charcoal / coke and salt ) as required. 19 supplying and fixing 5 a to 32 a rating, 240 / 415 v, 10 ka, c curve, miniature circuit breaker suitable for inductive load of following poles in the existing mcb db complete with connections, testing and commissioning etc. as required. single poles and netural 20 supplying and fixing following rating, four pole, 415 v, isolator in the existing mcb db complete with connections, testing and commissioning etc. as required. 63 amps