Electrical Works & Installation Tenders

Power cable: Supply, laying, testing and commissioning of 3 core × 2.5 sqmm copper conductor un-armoured power cable suitable for outdoor electrical supply to CCTV equipment complete in all respects conforming to the following specifications:

Supply, installation of maintenance free Chemical Earthing system with 76.2 mm diameter x 3mtrs. long Earth electrode,hot dip galvanized 80-100 micron zinc. coated ,pipe filled with molecularly bonded crystalline conductive material in order to prevent the pipe from inner corrosion. The inner strip must be of size 25mm x3mm and the connecting outer terminal must be of size 50mm x6 mm. 6-8 inches dma bore must be made up to 10.5 feet depth. The pipe should be placed on the center of the Earth pit and the pit sorroundings must be filled with Electrolyte/Conductolyte compound at least 75 kg.The compound should be filled with necessary processing as advised by company representative. In case where soil resistivity is high additional loops may be made by adding more number of electrodes to achieve the required result and the same shall be paid including this item. The connections must well be made with hot dip galvanized 80-100 micron Earth Strip as per required sizes for various devices as specified.The Strip at ground level should be covered with heat shrink PVC Sleeve and the wiring must be insulated by providing DMC insulator and GI saddle.The joining of strips should have at least two nut bolts and the same should be welded properly so that no free space exhists on joints.Each joint should be oiled and painted to prevent corrosion. The Earth pits should be covered with Pit Cover of size1.5 ft dia x1.5 foot length and must be Mason worked with brick and cement to hold the pit cover firmly. Each connecting points for devices should possess Earth bar of size 300 x300 made of copper 6 terminal box type which should possess insulation.In case where proper clayaee soil is not available then a pit of dia 1.5 mtrs must be dug. Before Earthing installation of electrodes necessary processing must made for soil treatment as guided by company representatives. Note: (a) The ohmic value shall no be more than 01 ohm. (b) If the resistivity of the soil not achieved the required ohmic value as per above. The Contractor shall filled with fresh soil from outside with such restivity to achieve such ohmic value. No extra payment shall be made for pouring outside soil, testing of soil for getting restivity and necessay soil shall be paid and measured including this item. (c) Additional BFC required to achieve the ohmic value shall be measured and paid including this item. No extra cost shall be made to the contractor. (d) During payment of RAR/ Final Bill the contractor shall submit necessary report of ohmic value for each location duly signied by Contractor, JE, Engineer-In-Charge and by the user representative.

doing pipe-in-pipe technology earthing. Earthing electric rod Only

Point wiring for 5A -10A socket out lets (computer points) with 2x2.5 sq mm (P+N)FRLS PVC insulated 660/1100volt grade flexible stranded copper conductor wires of Havells/ Polycab/ Anchor/ Finolex/KEI/RR make in recessed or surface conduiting system and earthing the point with 1 x 2.5 sq. mm single core copper wire (loop earthing), (Maximum two points shall be connected on one circuit).(Havells/ Polycab/ Anchor/ Finolex/KEI/RR/Apar/Grandly or equivalent) excluding cost of conduit.