Which NEC article completes labeling requirements for PV systems along with 690?

Which NEC article completes labeling requirements for PV systems along with 690?

• A. 694
• B. 705
• C. 250
• D. 706

Answer: (B)

Labeling PV installations properly isn’t just about the PV equipment itself. When a photovoltaic system is connected to the building’s electrical system alongside other energy sources, there must be clear labeling that identifies each source and how they interconnect. The article that covers interconnected electric power production sources provides the specific labeling requirements for these systems—how to mark the presence of a production source, identify backfed conductors and breakers, and document the interconnection so workers know what is energized and how to shut it off safely. This completes the labeling picture with 690 because 690 handles the PV equipment labeling, while 705 (Interconnected Electric Power Production Sources) handles labeling related to systems that interconnect PV with other power sources. The other options deal with different topics (such as grounding and bonding, or energy storage systems), which do not address the interconnection labeling requirements that accompany 690.

Labeling PV installations properly isn’t just about the PV equipment itself. When a photovoltaic system is connected to the building’s electrical system alongside other energy sources, there must be clear labeling that identifies each source and how they interconnect. The article that covers interconnected electric power production sources provides the specific labeling requirements for these systems—how to mark the presence of a production source, identify backfed conductors and breakers, and document the interconnection so workers know what is energized and how to shut it off safely.

This completes the labeling picture with 690 because 690 handles the PV equipment labeling, while 705 (Interconnected Electric Power Production Sources) handles labeling related to systems that interconnect PV with other power sources. The other options deal with different topics (such as grounding and bonding, or energy storage systems), which do not address the interconnection labeling requirements that accompany 690.