tender for improvement of earthing system at kondli gharoli sps and dallupura sps., 1 earthing with copper earth plate 600 mm x600 mm x 3 mm thick including accessories, and providing masonry enclosure with cover plate having locking arrangement and watering pipe of 2.7 meter long etc. with charcoal/ coke and salt as required. 2 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) 3 supply and pasting of 3 mm thickness insulating mats for electrical purpose conforming to is 15652/2000 make djb approved