Cables complying with the requirements are Type OFNP, OFCP, OFNR, OFCR, OFN, OFNG, OFC and OFCG cables. UL 1651 specifies the requirements for listing cable of these types and they include flame performance testing, marking durability, and other marking requirements. 24 Mechanical Execution of Work. Optical fiber cables shall be installed in a neat and workmanlike manner. Cables installed exposed on the surface of. Fiber optic cables enable high-speed, long-distance data transfer, forming the backbone of modern communication. Yet, outdoors, they face temperature swings, moisture, UV exposure, rodents, and human interference. Protecting them is essential for long-term reliability. 179 from "Communications Wires and Cables" to "Wires and Cables". The 2023 NEC, which replaces the 2020 NEC, will be overs Communications Systems. The 2020 edition of the NEC introduced a new Article into Chapter 8, Article 800, General Requirements for Communications Systems. Recommendations for Fiber Optic Cable Installation Where reels are supplied with protective material fitted over the cable, the protection should remain in place until the cable will be installed.
