The installation of optical fiber is covered in NEC Article ___?

• A. Article 725
• B. Article 805
• C. Article 770
• D. Article 600

Answer: (C)

Optical fiber installations are treated as a communications cabling topic in the NEC, not as general power or other kinds of low‑voltage wiring. The NEC designates a specific article to cover fiber optic communications, including how the fiber is installed, spliced, terminated, and protected, as well as routing and bend-radius requirements. That article is dedicated to fiber optic systems, so it’s the one that provides the proper rules for this work. The other articles address different kinds of circuitry (power, other low-voltage systems, etc.) and don’t specifically govern fiber optic installation, which is why they aren’t the appropriate reference for this topic.