Providing and fixing of chemical earth pit, change over switch and F.N Switch etc. for new D.G 100 KW at 9.0 Under Kathara Colliery.

Amount

Maintenance less earth resistance of cjemical ratty pit (A) latest techonology for sandy region (i) safe earthing electrode having two custom made G.I tubes ( galvanized 80 microns, minimum) one side the other of light 2 mtrs ( outer dia 80mm) field the conductor rich srystalline mixture (CCM)=01 No x 11932.00=11932.00 ii) back fill compound bag of 25 kg each=2 bag x 1708=3416.00 iii) installation charge 01 no x 700 =700.00 iv) brick work with common burnt clay R.P.S (none modular) ( brick of class designation 7.5 in foundation and plinth in cement mortar (1.6) 1 Cement: 6 coarse sand-01 no=0.8 Cum x 6991.00=5593.00 Total (11932.00+3416.00+700.00+5593.00) Total=31641.00 (01 No)

Supplying and laying 25mmx6mm G.I Dtrip at 0.50 meter below ground as strip earth electrode, including connection/ triminating with G.I nut, bolt spring washer etc as required (jointing shall be done by overlapping and with 2 sets of G.I nut bolt & spring washer spaced at 50mm)

Providing of charges over switch 800 Amps, 4 pole

Providing of F.N Switch 400 Amps, 4 pole

Labour charges

Wiring for circuit / sub main wiring along with earth wire with the following sizes of FRLS PVC insulated copper conductor, single core cable in surface/ recessed I) 2 x4 Sqmm + 1x4 sq.mm earth wire

Laying of one number PVC insulated and pvc sgeathed/ XPLE power cable of 1.1 KV graded of following size in the exixting masonry open duct as required above 35 sq.mm and upto 95 sq.mm

Supply and fixing of double interposing gland bush 70 Sqmm to 120 sqmm

Total impact of GST for the purpose of CTC

M/S SREE RAM ENTERPRISES

M/S TIGER ENTERPRISES