Master the Sunshine: NABCEP PV Installation Pro Test 2026 – Shine Bright in Solar!

The correct answer is that systems larger than 10 kW cannot be interconnected at various points in a facility. This is because most jurisdictions have regulations that dictate how and where larger systems can be interconnected to ensure safety, reliability, and compliance with local electrical codes. Interconnecting multiple points within a facility for high-capacity systems can introduce complexity and potential hazards, such as overload, electrical faults, and challenges in the operation of protection equipment.

To mitigate these risks and maintain system integrity, guidelines often restrict interconnection to specific points, typically those designed to handle the capacity and ensure that safety features such as circuit protection are effective. Compliance with local codes, such as the National Electrical Code (NEC) in the United States, often takes precedence over system size, establishing a framework for safe interconnection practices that notably focuses on systems above certain thresholds.

While there may be exceptions based on utility regulations or specific facility requirements, the general rule prevents arbitrary interconnections. Hence, understanding these regulations is critical for safe and effective PV system installation and operation.