Electrical Works & Installation Tenders

ENVIRONMENTALLY SAFE MAINTENANCE FREE COPPER ROD EARTHING SYSTEM Necessary soil treatment is to be made by the contractor in order to improve the Pit resistance Value.Supply,Installation and Testing of 75 mm copper Pipe Filled with Crystalline conductive Mixture with Eco friendly GEM Backfill Compound 2No. Bags also having Earth pit chamber (300mm x 300mm) with man- hole cover for the above. Including cost of 20mm Wide copper strip as required in one run fitted with of brass nut bolt & spring washer from EARTHING ROD up to MAIN Control PANEL through suitable DWC High Density Poly ethylene Pipe having Corrugation complete job.

(B) ELECTRICAL WORK:

M&L Earthing with galvanized mild steel earth plate electrode 60 centimetre x 60 centimetre x 6 mm thick buried directly in ground vertically to a depth not less than 2.25 metres below ground level, the top edge of the earth plate at a depth of not less than 1.5 metres below ground level connected to galvanized iron earth wire of 4 mm dia by means of bolts, nuts and washers made out of GI / steel earth wire protected by GI light grade pipe 15 mm bore, 20mm dia light grade galvanised iron pipe with funnel wire mesh for watering and connecting to main switch board / control board all s shown in electrical plate of SSR Pt - I connected to earthing test point and including testing on completion complete all as specified and as directed. Note: The unit rate shall also include for excavation, earth work in hard/dense soil, plain cement concrete 1:3:6 type C1 by using 20 mm graded aggregate in pit, 50 mm thick reinforced cement concrete 1:2:4 type B1 using 20 mm graded aggregate cover duly reinforced with 8 mm dia TMT bars @ 100mm centre to centre both ways, CI cover with CI frame hinges, galvanised iron funnel with watering pipe, wire mesh, complete.

Materials &Labour for concealed submain wiring with two single core PVC insulated, unsheathed, stranded copper conductor, FRLSH, of size 1.5 Sqmm and one single core PVC insulated, unsheathed stranded copper conductor FRLSH, of size 1.5 Sqmm green in colour as earth continuity conductor connected to existing main switch board / distribution board of each building / qtr as ordered, drawn into and including 20 mm dia PVC conduit (medium grade) with all fitting & accessories and testing on completion including taking down old unserviceable sub-main wiring complete all as specified and directed by Eng-in-Charge. (Note: Two runs of 1.5 Sqmm cable and one run of 1.5 Sqmm earthing cable along with conduit altogether shall be measured as one unit.)

Materials &Labour for concealed submain wiring with two single core PVC insulated, unsheathed, stranded copper conductor, FRLSH, of size 1.5 Sqmm and one single core PVC insulated, unsheathed stranded copper conductor FRLSH, of size 1.5 Sqmm green in colour as earth continuity conductor connected to existing main switch board / distribution board of each building / qtr as ordered, drawn into and including 20 mm dia PVC conduit (medium grade) with all fitting & accessories and testing on completion including taking down old unserviceable sub-main wiring complete all as specified and directed by Eng-in-Charge. (Note: Two runs of 1.5 Sqmm cable and one run of 1.5 Sqmm earthing cable along with conduit altogether shall be measured as one unit.)