What is required for the installation of PV source circuits according to Article 690?

The requirement for the installation of photovoltaic (PV) source circuits, as outlined in Article 690, emphasizes the importance of minimizing the risk of shock and fire. This is critical because PV systems operate at potentially hazardous voltage levels, and proper installation practices are essential to ensure both the safety of individuals and the operational integrity of the solar power systems.

Minimizing risks involves several considerations, such as ensuring that wiring is correctly rated for the current it will carry, using appropriate materials that can withstand environmental conditions, and implementing proper routing of PV circuits to avoid hazards. This aligns with the NEC’s overarching goal of promoting safety in electrical installations.

While options referring to conduit, grounding, and conductor size are also relevant to PV systems—since they relate to physical protection, grounding methods, and current carrying capacity—they do not encapsulate the primary requirement of focusing on risk mitigation. The broad aim of risk reduction covers a range of safety measures, making it the most comprehensive and relevant answer regarding Article 690 requirements for PV source circuits.