Which of the following is a safety consideration in PV installations as mentioned in Article 690?

Minimizing the risk of accidental grounding is an essential safety consideration in photovoltaic (PV) installations as outlined in Article 690 of the National Electrical Code (NEC). In PV systems, grounding plays a crucial role in ensuring safety and preventing electrical shock hazards. Accidental grounding can lead to dangerous conditions, such as equipment damage, unexpected power outages, and increased risk of electrical fires. By having clear guidelines on grounding practices, the NEC helps ensure that systems are installed safely and can effectively protect both equipment and individuals from electrical hazards.

While the other options touch upon various aspects of safety and installation best practices, they do not specifically address the unique grounding considerations that are critical in PV installations. For example, reducing the number of components can improve reliability but does not directly relate to grounding safety. Using outdoor-rated equipment is important for environmental durability, and proper labeling assists with maintenance and troubleshooting, but neither directly impacts the electrical safety concerning grounding. Thus, minimizing the risk of accidental grounding stands out as a key safety consideration necessary for the effective functioning and safety of PV installations.