Which section of the NEC specifically relates to grounding for PV systems?

The section of the National Electrical Code (NEC) that specifically addresses grounding for photovoltaic (PV) systems is Article 690. This article focuses on solar energy systems and provides detailed requirements regarding installation, wiring, and safety measures, including grounding practices to ensure safe operation and protection of both the equipment and personnel working with or near the systems.

Grounding is a critical aspect of PV system installation as it helps to prevent electrical shock hazards and ensures that any fault currents are safely directed to the ground. Article 690 specifies how grounding should be implemented, including the types of grounding conductors, equipment bonding, and the requirements for grounding electrical equipment used in solar energy systems.

While other articles in the NEC, such as Article 250, also discuss grounding and bonding, they provide more general information applicable to all types of electrical systems rather than the specific requirements for PV systems. Article 300 outlines general installation techniques for conductors and cables, and Article 100 defines terms used throughout the NEC. Therefore, Article 690 is the correct reference for grounding requirements specific to photovoltaic systems.