Which section of Article 690 covers the general requirements for PV systems?

The general requirements for photovoltaic (PV) systems are outlined in Section 690.1 of Article 690. This section establishes the scope and the purpose of the article, providing a framework for understanding how the other sections fit together in the context of solar energy installations. It lays down the foundational concepts and definitions that are critical for correctly interpreting and applying the rest of the NEC provisions related to PV systems.

Section 690.2, on the other hand, focuses on the definitions related to PV systems, which are essential for clarity but do not outline requirements. Section 690.3 deals with the specific installation requirements that follow after the general principles have been established, thus it is more about detailed protocols rather than overarching requirements. Similarly, Section 690.4 addresses specific types of equipment and their needed compliance within the overall system dynamics rather than the broader system requirements.

Understanding these distinctions helps reinforce the structure of Article 690 and the role of Section 690.1 as the starting point for comprehending the safety and regulatory standards of photovoltaic installations.