Why is grounding important in a PV system as stated in Article 690?

Grounding in a photovoltaic (PV) system is crucial for several reasons, primarily related to safety and system performance. By providing an effective grounding system, the risks associated with electric shock are significantly minimized. A grounded system helps to ensure that, in the event of a fault or overvoltage situation, excess electrical energy is safely directed to the ground, reducing the potential for electric hazards to individuals working on or near the system.

Moreover, grounding helps facilitate the reliable operation of the equipment. It can aid in mitigating transient voltages and provide a stable reference point for the electrical system, which ensures proper functioning and efficiency of the components involved. This is essential not only for the safety of personnel but also for maintaining the integrity and performance of the PV system itself.

By fulfilling these roles, grounding contributes to creating a safer working environment and ensures that the PV system operates effectively according to the standards set forth in Article 690 of the National Electrical Code.