In Article 690, what aspect of PV systems does the term "grounding" refer to?

The term "grounding" in the context of photovoltaic (PV) systems, as outlined in Article 690 of the NEC, specifically refers to creating an electrical pathway to the earth. Grounding is crucial for safety in electrical systems, as it provides a defined path for electrical currents, particularly during fault conditions. By directing excess current away from equipment and individuals, grounding helps mitigate the risk of electric shock and reduces the potential for damage to electrical equipment.

This pathway to the earth allows fault currents to be safely dissipated, thus enhancing the overall safety and reliability of the PV installation. It also plays a pivotal role in ensuring that any stray voltages caused by lightning or electrical surges do not pose a risk to both the equipment and users. Therefore, grounding is an essential practice in PV system design and installation for safeguarding both people and property.