Low-power broadband cables in raceways with optical fiber cables permitted option?

• A. Both conductive and nonconductive optical fiber cables
• B. Only conductive cables
• C. Copper twisted-pair cables
• D. Only nonconductive optical fiber cables

Answer: (A)

The main idea is that raceways for limited‑energy systems can carry multiple types of communications cables, including optical fiber, as long as you stay within fill and separation rules. Optical fiber cables come in two broad forms: nonconductive fibers, which have no metal conductors, and conductive fibers, which include a metal element but are still used for low‑voltage communication purposes. Because these cables carry low power and are part of communications circuits, they can share the same raceway with low‑power broadband cables without requiring separate raceways for each fiber type. The result is that both conductive and nonconductive optical fiber cables may be installed in the same raceway as low‑power broadband cables, provided you respect raceway fill and any applicable separation from higher‑voltage conductors.