A: Each section of a cable tray needs to be grounded; however, an independent connection back to the TGB for each section is not required. While electrical services, telecommunications equipment, and all other low voltage systems are required to be bonded to ground per national and local electrical codes and industry standards for safety reasons; the specific need to ground screened and shielded network cabling systems is only a. The correct way to ground and bond a cabling system is to ensure all conductive components, such as cable trays, patch panels, racks, and metallic enclosures, are electrically connected to a single, properly installed ground point. This process needs to comply with recognised standards like BS 7671. I've taken over designing a system that drives current (max 25 mA @ 150 kHz w/ 0-5Vpp) through a shielded SMA cable on a PCB (we'll call it PCB1) out to a user-defined circuit (circuit is unknown to me, just compatible with the spec's that I've listed above). PCB1 is connected to chassis ground. from the main electrical service ground shall be installed to meet C 250. 94 and TIA/EIA requirements type. Ground res stance shall not exceed 2 ohms unless approved by UN ed so that the TBB for telecommunications is as short and str BC shall be Green insulated conductor sized from Tab ri minimum. Specific attention must be paid to instrument grounding, especially where field instruments are connected to a computer or microprocessor based control system. Proper grounding of the shield ensures that captured interference is safely dissipated, protecting both the cable from.
