What is emphasized about the accessibility of disconnecting means in a PV system?

In a photovoltaic (PV) system, the accessibility of disconnecting means is crucial for safety and operational efficiency. The requirement for disconnecting means to be easily accessible allows for prompt action in emergencies, such as a fire or equipment malfunction. This accessibility is outlined in Article 690 of the National Electrical Code (NEC), which emphasizes that individuals (such as first responders or maintenance personnel) should be able to reach these disconnects without delay to ensure the safety of both people and property.

Additionally, easy access allows for routine maintenance and ensures that the system can be quickly shut down for repairs or during adverse conditions. The design intent is to prevent scenarios where critical disconnects are difficult to reach, which could lead to dangerous situations. By mandating an easily accessible location, the code helps ensure a standardized approach to safety across various installations.

Other options do not align with the NEC's emphasis on accessibility. For instance, while disconnects may be sealed or locked for security, those features should not hinder the immediate accessibility necessary in emergencies.