Supply, Installation, Testing and Commissioning of Earthing for Electrical Installations at C-DOT Campus
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Supply installation, testing and commissioning and providing independent earthing with copper earth plate 600 mm X 600 mm X 3 mm thick and 25mm dia. 'B' Class 2.7 meter long GI pipe and covered with mesh of suitable size funnel and providing brick masonry enclosure with FRP or CI cover plate having lifting /locking arrangement etc. internal size of chamber is 450x450x450 (depth) mm, filling with salt and charcoal shall be cover the Plate earthing. the connection from the electrode will be through 50x6mm copper strip provided at the top with 12mm holes (2nos) of the GI pipe along with GI (10mm) nut bolts and washers complete as directed by Engineer In-charge and technical specifications (as per IS 3043).
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Supply installation, testing and commissioning and providing independent earthing with G.I earth plate 600 mm X 600 mm X 6 mm thick and 25mm dia. 'B' Class 2.7 meter long GI pipe and covered with mesh of suitable size funnel and providing brick masonry enclosure with FRP or CI cover plate having lifting /locking arrangement etc. internal size of chamber is 450x450x450 (depth) mm, filling with salt and charcoal shall be cover the Plate earthing. the connection from the electrode will be through 50x6mm GI strip provided at the top with 12mm holes (2nos) of the GI pipe along with GI (10mm) nut bolts and washers complete as directed by Engineer In-charge and technical specifications (as per IS 3043).
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Supply installation, testing and commissioning and providing independent earthing with 40mm dia. ‘B’ Class 3.0 meter long GI pipe and covered with mesh of suitable size funnel and providing brick masonry enclosure with FRP or CI cover plate having lifting /locking arrangement etc. internal size of chamber is 300x300x300(depth)mm. The GI pipe required to be provided with staggered holes of 16nos of 12mm. dia to the earth electrode, filling with 200mm layers height of salt and charcoal around dia. 400mm (keeping GI pipe in center) and from the bottom of the pipe to the bottom of the chamber. The connection from the electrode will be through 25x5mm GI strip provided at the top with 12mm holes (4nos) of the GI pipe along with GI (10mm) nut bolts and washers complete as directed by Engineer In-charge and technical specifications (as per IS 3043)
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Supplying and laying 50 mm X 5 mm copper strip at 0.50 meter below ground as strip earth electrode, including connection/ terminating with nut, bolt, spring, washer etc. as required. (Jointing shall be done by overlapping and with 2 sets of brass nut bolt & spring washer spaced at 50mm)
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Supplying and laying 25 mm X 5 mm G.I strip at 0.50 meter below ground as strip earth electrode, including connection/ terminating 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)
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Demolishing of the nonfunctional earth pit chamber, if required as per the site constraints as directed by Engineer in charge Please Enable Macros to View BoQ information
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