2025 NEC Article 690 Practice Test – Complete Study Guide

The main purpose of a grounding electrode system in photovoltaic (PV) installations is primarily centered on safety and protection. Grounding provides a pathway for electrical faults to dissipate safely into the ground, mitigating the risks of electric shock to personnel and equipment. It serves to protect the system components from damage due to lightning strikes, surges, or accidental contact with energized parts. By establishing a grounding system, the installation ensures that in the event of a fault, the electricity is directed safely, preventing harm to individuals and reducing fire hazards.

While grounding may indirectly influence system efficiency and performance, its foremost function is to create a safe operational environment for both equipment and individuals. This emphasis on safety is vital in addressing the unique risks associated with electrical installations, particularly those exposed to outdoor elements and the possibility of weather-related electrical surges.