| 1 | Material and labour for concealed sub main wiring (Three run i.e. 1 x phase and 1 x netural and one run for continues as earth wire connected to earth dolly etc., using red, black and green colour wires as colour coding) with 4 Sqmm single core, FRLSH PVC insulated multistrand copper conductor drawn through and including PVC conduit medium mechanical stresses class PVC conduit as per IS 9537 (Part-III): 1983 of suitable nominal dia as required at site but not less than 25 mm nominal size, with all fittings and all accessories i.e. pipe bend, elbow, pipe hook/PVC clamps etc., for independent circuit from panel/DB to sheet metal enclosure and including cutting of chases in wall, including making good with cement mortar (1:3) and finishes as per existing complete all as specified and as directed.
Note :-Three run of copper wire and one run conduit shall be measured as one RM length for payment but extra length of cables required for connection to MCBs/DB shall not be measured and the cost for the same shall deemed to be included in the unit rate. | 2051.00 | RM |
| 2 | Supply and fixing (concealed in wall or as directed) single pole and neutral sheet metal enclosure with a two pin and earth (3-pin, 2P+E) plug and socket, designed with IP-54 protection (protection against dust and splashing water), complete with one single pole MCB of capacity 20/25 Amps (C-Curve, 10kA breaking capacity), 240 volts, AC supply complete all as specified and as directed. | 88.00 | Each |
| 3 | Supply and fixing SPN MCB C curve, 32 Amps, 240 volts AC supply, with over load and short circuit protection and rupturing capacity not less than 10 KA, fixing in existing DB after removing blanking plate complete all as specified and as directed. | 88.00 | Each |
| 4 | Material and labour for maintenance free chemical earthing complete with copper solid rod 10 feet length, 17.2 mm dia, made of copper-bonded grounding rod (250+ microns) is a high-tensile, low-carbon steel rod molecularly bonded with 99.9% pure copper, complies with Underwriters Laboratories (UL, UL 467) standards, with exothermally jointed copper bus bar of 50 X 6 X 200 mm for connection. The rod and exothermic joint together successfully tested at 25KA fault current by CPRI, filling around the electrode with minimum 50 kg eco-friendly earth enhancing compound (bentonite/graphite based conductive compound) having low resistivity with each earth rod comply to IEC:62561-7, The earth electrode shall be installed by boring a hole of approx 125 mm dia up to a depth of 4.5 mtr below ground level, top edge of earth rod at a depth not less than 1.5 metre below normal ground level or as per manufacturers instruction, electrode connections by using earth continuity copper strip 32x6 mm (upto test point from top of rod, i.e. 7.5m min) by means of brass bolts/nuts/washers and drawn through and including protected by 50mm dia GI light grade protection pipe from earth plate to test point, including excavation and earth work, complete with HDPE/PVC earth pit chamber with FRP cover of suitable size, installation, commissioning and testing complete all as specified and as directed.
| 5.00 | Each Job |
| 5 | Notes for BOQ item 4 above :- (a) Installation of earthing shall be carried out by the manufacturer/company s authorised engineer, from a company approved by GE, at site. The cost of installation, supervision and commissioning shall be deemed to be included in the quoted unit rate. Nothing extra shall be paid on this account.
(b) Testing shall be carried out by the authorised representative of the manufacturer/company in the presence of the Engineer-in-Charge. The earth resistance value shall not exceed 1 Ohm. The contractor shall make all necessary arrangements for testing of earthing, including providing required instruments, accessories and labour, as directed by the Engineer-in-Charge. Test result will be recorded in a register and signed by all concern.
(c) The contractor shall submit a five-year guarantee certificate from the manufacturer/company after the certified date of completion of the work for maintaining earth result less than 1 ohm. Obtaining and submission of the said guarantee certificate shall be the responsibility of the contractor. Security deposit on account of this guarantee shall be withheld from the contractor s payments during the guarantee period, i.e., 10% of the quoted rate for a period up to five years. This security deposit shall be refunded to the contractor after expiry of the guarantee period, provided the system has performed satisfactorily. Alternatively, the contractor may submit a separate interest-bearing Term Deposit Receipt (TDR) in favour of GE for the above amount, valid for the entire guarantee period.
(d) Additional earth enhancing compound, if required to achieve earth resistance not exceeding 1 Ohm, shall be provided by the contractor and the cost of the same shall be deemed to be included in the quoted unit rate. No extra payment shall be made on this account.
(e) Cost of earthwork and necessary PCC work for fixing earthing pit shall deemed to be included in the quoted unit rate.
(f) Purchase voucher of earthing will be produced before payment. Payment shall be made only after getting satisfactory result.
(g) Test point shall be measured & paid separately under appropriate item of this BOQ. | | |
