What’s in the Code? Applying the NEC to medium- and high-voltage grounding
Grounding techniques and National Electrical Code (NEC) requirements play a critical role in ensuring the safety and reliability of electrical systems, especially those operating at higher voltages such as 5-kilovolt (kV) and 15-kV systems. Unlike systems with voltages of 1,000V or less, these higher voltage systems necessitate specific grounding provisions to manage potential hazards effectively. For systems exceeding 1,000V, the NEC mandates more stringent grounding practices to prevent dangerous voltage levels, control fault currents, and safeguard personnel and equipment. This includes provisions for specialized grounding electrodes, bonding conductors, and fault protection schemes tailored to the elevated voltage levels. By adhering to these regulations, engineers and electricians ensure that high-voltage systems operate safely and reliably, mitigating the risks associated with their operation.