What does "PV" stand for in the context of Article 690?

In the context of Article 690 of the National Electrical Code, "PV" stands for Photovoltaic. The term Photovoltaic is used to describe technology that converts sunlight directly into electricity using semiconductor materials that exhibit the photovoltaic effect. This is fundamental to the functioning of solar panels commonly used in renewable energy systems.

The inclusion of "Photovoltaic" emphasizes the focus on solar energy applications and the necessary safety and installation standards outlined in Article 690. Photovoltaic systems are designed to harness solar energy efficiently, and understanding this term is key for anyone working with solar electric systems.

While "Photo Voltaic" may seem like a plausible answer due to its similar spelling, it is not the officially recognized terminology within the NEC framework. The option "Power Voltage" does not relate to the specific technology or its application in solar energy systems. "Photonic Voltage," although it sounds technical, is not a valid term used in the context of photovoltaic technology or the NEC.