Table 16-30 shows the grounding specifications for communication power supplies. The inlet for the AC power cable at the equipment room should be equipped with a surge protection device (C-level) with a nominal discharge current no less than 20 kA. The protective ground for the power supply and. This article will explore the risks of connecting commons and provide a practical guide to designing a robust power distribution strategy that avoids these issues. Before diving into ground loops, we must clarify some basic terms. In electronics, the “common” or “COM” terminal is the 0V reference. Grounding is a cornerstone of safety and performance in industrial electrical and electronic systems. Not only does it protect personnel by ensuring safe voltage levels on exposed metal surfaces, but it also safeguards sensitive electronic equipment from electrical disturbances like transients and. An earthing system (internationally ) or grounding system (US) connects specific parts of an electric power system, such as the conductive surfaces of equipment, with the ground for safety and functional purposes. The choice of earthing system can affect the safety and electromagnetic. Actually, grounding and earthing are not required for either AC or DC systems to function. However, grounding via the neutral, equipment grounding conductor (EGC), or protective ground wire is necessary and mandatory for personnel and equipment protection against electric shock, as well as for. Grounding is undoubtedly one of the most difficult subjects in system design.
