[Chai Jin cable tray to recommend the star product - bridge] bridge fire zone fire safety requirements, must be steel or non-combustible, fire-retardant materials. I produced a series of cable tray are BJⅢ fire bridge. V. Ground 1, the bridge system should have a reliable electrical connection and ground (only metal bridge). 2, when the system configuration should be allowed to use the bridge circuit grounding line meets the following requirements. Connection resistance between the ends of the bridge should not exceed 0.00033 ohms Cascade cable bridge, grounding holes should remove the insulation coating. [Chai Jin cable tray to recommend the star product - bridge] at the time of selection, cable tray manufacturing plant is provided to allow the load should be greater than the actual amount of the total amount of load G. When the cable tray with cover installed outdoors FRP cable tray price, but also counted cable tray withstand the maximum load of snow and other effects. Cable tray width b is determined with the different power cables and control cables work system rather different. As the power cables in the bridge are generally single-level emissions, so the installation of the bridge width b is: b = n1 (d1 + k1) + n2 (d2 + k2) + n3 (d3 + k3) + ...... Where: d1 , d2, d3 ...... for a variety of cable outer diameter of the inner tray cable tray, the unit is mmn1, n2, n3 ...... above the number of the same types of specifications of the cable. K1, k2, k3 ...... pitch of said cable when placed. The value should be greater than 1/4 of the minimum diameter of the cable. In general, control cables can be arranged either horizontally within the bridge can also be stacked. Trough type cable tray, tray corporate integrity Chai Jin (certified), Jinhua cable tray cable tray provided by the Tianjin Chai Jin Limited. Chai Jin Tianjin cable bridge Limited (www.tjcjdlqj.com) is Tianjin, metal building materials leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Chai Jin leader in cable tray with the staff warmly welcome all inquiries negotiations to create Chai Jin cable tray a better future.