1.7 different voltage cables for different purposes should not be laid in the same layer cable tray: (1) 1kV and above and below 1kV cables: (2) the same path to a load of double-circuit power supply cable; (3) emergency lighting and Other lighting cables: (4) power, control and telecommunications cables. If the different levels of cable laid in the same cable tray, intermediate bulkhead should be increased isolation. 1.8 When the steel cable tray straight sections longer than 30m Nanyang cable manufacturers, aluminum alloy cable bridge over 15m. Or when should retractable cable tray after building (settlement) seam allowance leaving O-30mm compensate its connection should telescopic webs. 1.9 cable ladder, tray width and height should be chosen to meet the requirements of the filling factor, cable ladders, under normal circumstances tray fill rate of cable, power cable desirable 40% -50%, 50% of the control cable is preferable. 70% of l0% and should set aside a 252 project development margin. 1.10 When choosing cable tray load rating, cable bridge work uniform load should not exceed the load rating of the selected cable tray rated uniform load, if the actual span cable tray hangers are not equal to 2m. The cable is defective site remedial measures when confronted with a lot of cable failure is particularly troublesome in this to tell you when it occurs in the cable field how remedies. Cable laying process in the field of cable jacket surface scratch phenomenon is widespread damage, the damage is only minor injuries to the jacket, how to ensure the quality of repair, and repair a short time, but also ensures the quality of becoming cable consumption by widespread concern. And invest in small, under harsh conditions and easy to implement on-site Nanyang cable prices, so repair technology and quality site sheath increasingly becoming of interest to users. Site construction generally poor condition of the cable, may be located in the initial construction of power plants, may also be located preliminary field new railway under construction, may be on the bridge, possibly cable in the cable tunnel, since the field cable jacket patches are used Plastic welding gun, and the need for heating the plastic gun 220V AC, while new construction projects in the field, on-site general lack of power, or power supply may be due to the location of the site lay immediately of cable to provide power to bring a certain difficulties, so to achieve the cable sheath repair, one person is in place, the other main power supply is provided, only make the two pieces of basic preparatory work in order to achieve the cable sheath repair normal work and get on. Nanyang cable best, Teflon electricity (certified), cable provided by Nanyang Fu Long Electric Power Engineering Company Limited. Nanyang Fu Long Electric Power Engineering Co., Ltd. (www.nyfulong.com) is Nanyang, Henan, transmission equipment and materials leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Teflon power in leadership with the staff warmly welcome all inquiries negotiations to create Teflon electricity better future.