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+---
+title: Article 800 General Requirements for Communications Systems
+tags:
+  - exclude-from-word-count
+  - topic/construction/electrical
+  - type/media/reference
+up: "[[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|electrical nonmetallic tubing (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).