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| Article 800 General Requirements for Communications Systems |
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nfpa-70_national-electric-code |
Article 800 General Requirements for Communications Systems
Part IV. Installation Methods Within Buildings
800.110 Raceways, Cable Routing Assemblies, and Cable Trays.
800.110(A) Types of Raceways.
Wires and cables shall be permitted to be installed in raceways that comply with either 800.110(A)(1) or (A)(2). Medium-power network-powered broadband communications cables shall not be permitted to be installed in raceways that comply with 800.110(A)(2).
800.110(A)(1) Raceways Recognized in Chapter 3.
Wires and cables shall be permitted to be installed in any raceway included in Chapter 3. The raceways shall be installed in accordance with the requirements of Chapter 3.
800.110(A)(2) Communications Raceways.
Wires and cables shall be permitted to be installed in plenum communications raceways, riser communications raceways, and general-purpose communications raceways selected in accordance with Table 800.154(b), listed in accordance with 800.182, and installed in accordance with 800.113 and 362.24 through 362.56, where the requirements applicable to nfpa-70_362_ent apply.
800.110(A)(3) Innerduct for Communications Wires and Cables, Coaxial Cables, or Network-Powered Broadband Communications Cables.
Listed plenum communications raceways, listed riser communications raceways, and listed general-purpose communications raceways selected in accordance with Table 800.154(b) shall be permitted to be installed as innerduct in any type of listed raceway permitted in Chapter 3.
800.110(B) Raceway Fill.
The raceway fill requirements of Chapters 3 and 9 shall apply to medium-power network-powered broadband communications cables.
800.110(C) Cable Routing Assemblies.
Cables shall be permitted to be installed in plenum cable routing assemblies, riser cable routing assemblies, and general-purpose cable routing assemblies selected in accordance with Table 800.154(c), listed in accordance with 800.182, and installed in accordance with 800.110(C)(1) and (C)(2) and 800.113.
800.110(C)(1) Horizontal Support.
Cable routing assemblies shall be supported where run horizontally at intervals not to exceed 900 mm (3 ft) and at each end or joint, unless listed for other support intervals. In no case shall the distance between supports exceed 3 m (10 ft).