What does bonding of grounding electrodes at a structure serve to improve?

The practice of bonding grounding electrodes at a structure is primarily intended to enhance grounding performance. Bonding connects various grounding components, such as electrodes, metal parts of equipment, and structures, ensuring that they share the same electrical potential. This is crucial because it reduces the risk of electrical shock and protects equipment from voltage surges or faults.

When grounding electrodes are well bonded, it creates a more effective path for fault currents to return to the ground. This can improve the reliability of the grounding system in safely diverting any unexpected currents, such as those caused by lightning strikes or equipment faults. Enhanced grounding performance also means better protection against electromagnetic interference, contributing to the overall safety and effectiveness of electrical systems.

While reducing voltage drops, increasing current capacity, and minimizing wire resistance are all important aspects of electrical installations, they are secondary outcomes that can occur as a result of effective grounding practices. The primary goal of bonding grounding electrodes is to foster a safe and effective grounding performance.