GAIL (India) Limited

16CHAPTER 31. Scope:LAYING OF CABLESThis specification is intended to cover the requirements of installation and energizing of PVC / XLPE /PILCDSTA power cables including jointing of cables.2. Standards:The power cable and its fixing accessories shall comply with the latest relevant Indian Standards andNational Electrical Code.3. Laying of Cables:3 1 General:3.1 Before the commencement of cable laying routing shall be ensured by the engineer- in-charge.3.1.2 The material such as bricks, sand, cable route markers, RCC slab of best quality as approved by theEngineer-in-Charge only shall be used for cable laying works.3.1.3 The contractor shall provide all the necessary labour, tools, plants and other requisites at his own cost forcarrying out pumping of water and removing of water from trenches, if any, where required.3.1.4 Installation shall be carried out in a neat, workman like manner by skilled, experienced and competentworkman in accordance with standard practices.3.1.5 While laving the cable care shall be taken to avoid formation of twists and also damage to the cable. In thecase of cable bends, it shall not have bent radius lesser than 20 times the overall diameter of the cable.3.1.6 A cable loops of about five meters length and as directed by the Engineer-in-Charge shall be provided atthe following locationsa) Near the termination pointsb) Near to the straight through joint3.1.7 The method of cable laying and routing of cables, shall in every, case be as directed by the Engineer-in-Charge / consultant.3 1 8 Whenever cable passes through Hume pipes/GI pipes embedded across the wall in a building, both theends of the pipe shall be suitably sealed.3.1.9 Identification tags indicating the size of (the cable and feeder designation shall be securely attached atboth ends of the cable. Such tags shall also be attached to the cable at intervals of 50 Mtrs. The materialsof the tag shall be of either 12 SWG GI Sheet. In case of plastic, the details have to be engraved andincase of GI sheet, the details should be punched Cable route markers shall be provided at the intervals of200 M with a minimum of one number route marker. The details of the route makers shall be as per thedrawing. At the locations of straight through joints, necessary joint-markers shall be provided.3.1.10 When cable runs vertically, it shall be clamped on mild steel flats or angle iron fixed on walls and isspaced at such intervals as to prevent buckling of the cables. All steelwork shall be painted with a coat ofred oxide and thereafter finished with suitable anticorrosive paints.