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Chapter 7 Special Conditions | 770.106(A) | Grounding shall comply with 770.106(A)(1) and (A)(2). Installations Without Mobile Home Service Equipment. If there is no mobile home service equipment located within 9.0 m (30 ft) of the exterior wall of the mobile home it serves, the non-current-carrying metallic members of optical fiber cables entering the mobile home shall be grounded in accordance with 770.100(B)(3).Installations Without Mobile Home Disconnecting Means. If there is no mobile home disconnecting means grounded in accordance with 250.32 and located within 9.0 m (30 ft) of the exterior wall of the mobile home it serves, the non-current-carrying metallic members of optical fiber cables entering the mobile home shall be grounded in accordance with 770.100(B)(3). [770.106(A)](https://2023.antflix.net#770.106(A)) | https://2023.antflix.net#770.106(A) |
Chapter 7 Special Conditions | 770.106(B) | The grounding electrode shall be bonded to the metal frame or available grounding terminal of the mobile home with a copper conductor or other equivalent corrosion-resistant material not smaller than 12 AWG under either of the following conditions: If there is no mobile home service equipment or disconnecting means as in 770.106(A)If the mobile home is supplied by cord and plug [770.106(B)](https://2023.antflix.net#770.106(B)) | https://2023.antflix.net#770.106(B) |
Chapter 7 Special Conditions | 770.110(A) | Optical fiber cables shall be permitted to be installed in any raceway that complies with either 770.110(A)(1) or (A)(2). [770.110(A)](https://2023.antflix.net#770.110(A)) | https://2023.antflix.net#770.110(A) |
Chapter 7 Special Conditions | 770.110(A)(1) | Optical fiber cables shall be permitted to be installed in any raceway included in Chapter 3. The raceways shall be installed in accordance with Chapter 3. [770.110(A)(1)](https://2023.antflix.net#770.110(A)(1)) | https://2023.antflix.net#770.110(A)(1) |
Chapter 7 Special Conditions | 770.110(A)(2) | Optical fiber cables shall be permitted to be installed in listed communications raceways selected in accordance with Table 800.154(b). [770.110(A)(2)](https://2023.antflix.net#770.110(A)(2)) | https://2023.antflix.net#770.110(A)(2) |
Chapter 7 Special Conditions | 770.110(B) | Raceway fill for optical fiber cables shall comply with either 770.110(B)(1) or (B)(2). [770.110(B)](https://2023.antflix.net#770.110(B)) | https://2023.antflix.net#770.110(B) |
Chapter 7 Special Conditions | 770.110(B)(1) | Where optical fiber cables are installed in raceway without electric light or power conductors, the raceway fill requirements of Chapters 3 and 9 shall not apply. [770.110(B)(1)](https://2023.antflix.net#770.110(B)(1)) | https://2023.antflix.net#770.110(B)(1) |
Chapter 7 Special Conditions | 770.110(B)(2) | Where nonconductive optical fiber cables are installed with electric light or power conductors in a raceway, the raceway fill requirements of Chapters 3 and 9 shall apply. [770.110(B)(2)](https://2023.antflix.net#770.110(B)(2)) | https://2023.antflix.net#770.110(B)(2) |
Chapter 7 Special Conditions | 770.110(C) | Optical fiber cables shall be permitted to be installed in listed cable routing assemblies selected in accordance with Table 800.154(c). [770.110(C)](https://2023.antflix.net#770.110(C)) | https://2023.antflix.net#770.110(C) |
Chapter 7 Special Conditions | 770.110(D) | Optical fiber cables shall be permitted to be installed in metal or listed nonmetallic cable tray systems. [770.110(D)](https://2023.antflix.net#770.110(D)) | https://2023.antflix.net#770.110(D) |
Chapter 7 Special Conditions | 770.111 | 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. [770.111](https://2023.antflix.net#770.111) | https://2023.antflix.net#770.111 |
Chapter 7 Special Conditions | 770.113 | Installation of optical fiber cables shall comply with 770.113(A) through (J). Installation of raceways and cable routing assemblies shall comply with 770.110. [770.113](https://2023.antflix.net#770.113) | https://2023.antflix.net#770.113 |
Chapter 7 Special Conditions | 770.113(A) | Optical fiber cables installed in buildings shall be listed in accordance with 770.179 and installed in accordance with the limitations of the listing. Exception: Optical fiber cables that are installed in compliance with 770.48 shall not be required to be listed. [770.113(A)](https://2023.antflix.net#770.113(A)) | https://2023.antflix.net#770.113(A) |
Chapter 7 Special Conditions | 770.113(B) | Installations of optical fiber cables in ducts specifically fabricated for environmental air shall be in accordance with 770.113(B)(1) and (B)(2). [770.113(B)](https://2023.antflix.net#770.113(B)) | https://2023.antflix.net#770.113(B) |
Chapter 7 Special Conditions | 770.113(B)(1) | The following cables shall be permitted in ducts specifically fabricated for environmental air as described in 300.22(B) if they are directly associated with the air distribution system: Up to 1.22 m (4 ft) of Types OFNP and OFGPTypes OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC installed in raceways that are installed in compliance with 300.22(B)Informational Note: For information on fire protection of wiring installed in fabricated ducts, see NFPA 90A-2018, Standard for the Installation of Air-Conditioning and Ventilating Systems. [770.113(B)(1)](https://2023.antflix.net#770.113(B)(1)) | https://2023.antflix.net#770.113(B)(1) |
Chapter 7 Special Conditions | 770.113(B)(2) | Types OFNR, OFCR, OFNG, OFCG, OFN, and OFC shall not be permitted to be installed in ducts specifically fabricated for environmental air as described in 300.22(B). Informational Note: See NFPA 90A-2021, Standard for the Installation of Air-Conditioning and Ventilating Systems, for information on fire protection of wiring installed in fabricated ducts. [770.113(B)(2)](https://2023.antflix.net#770.113(B)(2)) | https://2023.antflix.net#770.113(B)(2) |
Chapter 7 Special Conditions | 770.113(C) | Installations of optical fiber cables in other spaces used for environmental air shall be in accordance with 770.113(C)(1) and (C)(2). [770.113(C)](https://2023.antflix.net#770.113(C)) | https://2023.antflix.net#770.113(C) |
Chapter 7 Special Conditions | 770.113(C)(1) | The following cables shall be permitted in other spaces used for environmental air as described in 300.22(C): Types OFNP and OFCPTypes OFNP and OFCP installed in plenum communications racewaysTypes OFNP and OFCP installed in plenum cable routing assembliesTypes OFNP and OFCP supported by open metal cable tray systemsTypes OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC installed in raceways that are installed in compliance with 300.22(C)Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC supported by solid bottom metal cable trays with solid metal covers in other spaces used for environmental air (plenums), as described in 300.22(C)Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC installed in plenum riser and general-purpose communications raceways supported by solid bottom metal cable trays with solid metal covers in other spaces used for environmental air (plenums), as described in 300.22(C) [770.113(C)(1)](https://2023.antflix.net#770.113(C)(1)) | https://2023.antflix.net#770.113(C)(1) |
Chapter 7 Special Conditions | 770.113(C)(2) | Types OFNR, OFCR, OFNG, OFCG, OFN, and OFC shall not be permitted to be installed in other spaces used for environmental air (plenums). Informational Note: See NFPA 90A-2018, Standard for the Installation of Air-Conditioning and Ventilating Systems, for information on fire protection of wiring installed in other spaces used for environmental air. [770.113(C)(2)](https://2023.antflix.net#770.113(C)(2)) | https://2023.antflix.net#770.113(C)(2) |
Chapter 7 Special Conditions | 770.113(D) | Installations of optical fiber cables in vertical runs shall be in accordance with 770.113(D)(1) and (D)(2). (l) Uses Permitted. The following cables shall be permitted in vertical runs penetrating one or more floors and in vertical runs in a shaft:Types OFNP, OFCP, OFNR, and OFCRTypes OFNP, OFCP, OFNR, and OFCR installed in the following:Plenum communications racewaysPlenum cable routing assembliesRiser communications racewaysRiser cable routing assemblies [770.113(D)](https://2023.antflix.net#770.113(D)) | https://2023.antflix.net#770.113(D) |
Chapter 7 Special Conditions | 770.113(2) | Types OFNG, OFCG, OFN, and OFC shall not be permitted to be installed in vertical runs. Informational Note: See 770.26 for firestop requirements for floor penetrations. [770.113(2)](https://2023.antflix.net#770.113(2)) | https://2023.antflix.net#770.113(2) |
Chapter 7 Special Conditions | 770.113(E) | The following cables and innerducts shall be permitted in metal raceways in a riser having firestops at each floor: Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFCTypes OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC installed in the following:Plenum communications raceways (innerduct)Riser communications raceways (innerduct)General-purpose communications raceways (innerduct)Informational Note: See 770.26 for firestop requirements for floor penetrations. [770.113(E)](https://2023.antflix.net#770.113(E)) | https://2023.antflix.net#770.113(E) |
Chapter 7 Special Conditions | 770.113(F) | The following cables shall be permitted to be installed in fireproof riser shafts having firestops at each floor: Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFCTypes OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC installed in the following:Plenum communications racewaysPlenum cable routing assembliesRiser communications racewaysRiser cable routing assembliesGeneral-purpose communications racewaysGeneral-purpose cable routing assembliesInformational Note: See 770.26 for firestop requirements for floor penetrations. [770.113(F)](https://2023.antflix.net#770.113(F)) | https://2023.antflix.net#770.113(F) |
Chapter 7 Special Conditions | 770.113(G) | The following cables shall be permitted in one- and two- family dwellings: Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFCTypes OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC installed in the following:Plenum communications racewaysPlenum cable routing assembliesRiser communications racewaysRiser cable routing assembliesGeneral-purpose communications racewaysGeneral-purpose cable routing assemblies [770.113(G)](https://2023.antflix.net#770.113(G)) | https://2023.antflix.net#770.113(G) |
Chapter 7 Special Conditions | 770.113(H) | The following cables shall be permitted to be supported by cable trays: Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFCTypes OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC installed in the following:Plenum communications racewaysRiser communications racewaysGeneral-purpose communications raceways [770.113(H)](https://2023.antflix.net#770.113(H)) | https://2023.antflix.net#770.113(H) |
Chapter 7 Special Conditions | 770.113(I) | The following cables shall be permitted to be installed in distributing frames and cross-connect arrays: (2) Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC (3) Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC installed in the following:Plenum communications racewaysPlenum cable routing assembliesRiser communications racewaysRiser cable routing assembliesGeneral-purpose communications racewaysGeneral-purpose cable routing assemblies [770.113(I)](https://2023.antflix.net#770.113(I)) | https://2023.antflix.net#770.113(I) |
Chapter 7 Special Conditions | 770.113(J) | The following cables shall be permitted to be installed in building locations other than the locations covered in 770.113(B) through (I): Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFCTypes OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC installed in:Plenum communications racewaysPlenum cable routing assembliesRiser communications racewaysRiser cable routing assembliesGeneral-purpose communications racewaysGeneral-purpose cable routing assembliesTypes OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC installed in a raceway of a type recognized in Chapter 3 [770.113(J)](https://2023.antflix.net#770.113(J)) | https://2023.antflix.net#770.113(J) |
Chapter 7 Special Conditions | 770.114 | Non-current-carrying conductive members of optical fiber cables shall be bonded to a grounded equipment rack or enclosure, or grounded in accordance with the grounding methods specified by 770.100(B) using a conductor specified in 770.100(A). [770.114](https://2023.antflix.net#770.114) | https://2023.antflix.net#770.114 |
Chapter 7 Special Conditions | 770.133(A) | Conductive optical fiber cables contained in an armored or metal-clad-type sheath and nonconductive optical fiber cables shall be permitted to occupy the same cable tray or raceway with conductors for electric light, power, Class 1, non-power-limited fire alarm, Type ITC, or medium-power network-powered broadband communications circuits operating at 1000 volts or less. Conductive optical fiber cables without an armored or metal-clad-type sheath shall not be permitted to occupy the same cable tray or raceway with conductors for electric light, power, Class 1, non-power-limited fire alarm, Type ITC, or medium-power network-powered broadband communications circuits, unless all of the conductors of electric light, power, Class 1, non—power-limited fire alarm, and medium-power network-powered broadband communications circuits are separated from all of the optical fiber cables by a permanent barrier or listed divider. [770.133(A)](https://2023.antflix.net#770.133(A)) | https://2023.antflix.net#770.133(A) |
Chapter 7 Special Conditions | 770.133(B) | Nonconductive optical fiber cables shall not be permitted to occupy the same cabinet, outlet box, panel, or similar enclosure housing the electrical terminations of an electric light, power, Class 1, non—power-limited fire alarm, or medium-power network-powered broadband communications circuit unless one or more of the following conditions exist: The nonconductive optical fiber cables are functionally associated with the electric light, power, Class 1, non-power-limited fire alarm, or medium-power network-powered broadband communications circuit.The conductors for electric light, power, Class 1, non-power-limited fire alarm, Type ITC, or medium-power network-powered broadband communications circuits operate at 1000 volts or less.The nonconductive optical fiber cables and the electrical terminations of electric light, power, Class 1, non—power-limited fire alarm, or medium-power network-powered broadband communications circuit are installed in factory- or field-assembled control centers.The nonconductive optical fiber cables are installed in an industrial establishment where conditions of maintenance and supervision ensure that only qualified persons service the installation. (C) With Other Circuits. Conductive and nonconductive optical fiber cables shall be permitted in the same raceway, cable tray, box, enclosure, or cable routing assembly, with conductors of any of the following: When optical fibers are within the same hybrid cable for electric light, power, Class 1, non—power-limited fire alarm, or medium-power network-powered broadband communications circuits operating at 1000 volts or less, they shall be permitted to be installed only where the functions of the optical fibers and the electrical conductors are associated.Optical fibers in hybrid optical fiber cables containing only current-carrying conductors for electric light, power, or Class 1 circuits rated 1000 volts or less shall be permitted to occupy the same cabinet, cable tray, outlet box, panel, raceway, or other termination enclosure with conductors for electric light, power, or Class 1 circuits operating at 1000 volts or less.Optical fibers in hybrid optical fiber cables containing current-carrying conductors for electric light, power, or Class 1 circuits rated over 1000 volts shall be permitted to occupy the same cabinet, cable tray, outlet box, panel, raceway, or other termination enclosure with conductors for electric light, power, or Class 1 circuits in industrial establishments, where conditions of maintenance and supervision ensure that only qualified persons service the installation.Class 2 and Class 3 remote-control, signaling, and power-limited circuits in compliance with 645.5(E)(2) or Parts I and II of Article 725Power-limited fire alarm systems in compliance with Parts I and III of Article 760Communications circuits in compliance with Parts I and V of Article 805Community antenna television and radio distribution systems in compliance with Parts I and V of Article 820Low-power network-powered broadband communications circuits in compliance with Parts I and V of Article 830 [770.133(B)](https://2023.antflix.net#770.133(B)) | https://2023.antflix.net#770.133(B) |
Chapter 7 Special Conditions | 770.133(D) | Raceways shall be used for their intended purpose. Optical fiber cables shall not be strapped, taped, or attached by any means to the exterior of any conduit or raceway as a means of support. Exception: Overhead (aerial) spans of optical fiber cables shall be permitted to be attached to the exterior of a raceway-type mast intended for the attachment and support of such cables. [770.133(D)](https://2023.antflix.net#770.133(D)) | https://2023.antflix.net#770.133(D) |
Chapter 7 Special Conditions | 770.154 | Permitted and nonpermitted applications of listed optical fiber cables shall be as indicated in Table 770.154(a). The permitted applications shall be subject to the installation requirements of 770.110 and 770.113. The substitutions for optical fiber cables in Table 770.154(b) and illustrated in Figure 770.154 shall be permitted. Table 770.154(a) Applications of Listed Optical Fiber Cables in Buildings Applications Listed Optical Fiber Cable Type OFNP, OFCP OFNR, OFCR OFNG, OFCG, OFN, OFC In ducts specifically fabricated for environmental air as described in 300.22(B) In fabricated ducts Y* N N In metal raceway that complies with 300.22(B) Y* Y* Y* In other spaces used for environmental air (plenums) as described in 300.22(C) In other spaces used for environmental air Y* N N In metal raceway that complies with 300.22(C) Y* Y* Y* In plenum communications raceways Y* N N In plenum cable routing assemblies Y* N N Supported by open metal cable trays Y* N N Supported by solid bottom metal cable trays with solid metal covers Y* Y* Y* In risers In vertical runs Y* Y* N In metal raceways Y* Y* Y* In fireproof shafts Y* Y* Y* In plenum communications raceways Y* Y* N In plenum cable routing assemblies Y* Y* N In riser communications raceways Y* Y* N In riser cable routing assemblies Y* Y* N In one- and two-family dwellings Y* Y* Y* Within buildings in other than air-handling spaces and risers General Y* Y* Y* Supported by cable trays Y* Y* Y* In distributing frames and cross-connect arrays Y* Y* Y* In any raceway recognized in Chapter 3 Y* Y* Y* In plenum communications raceway Y* Y* Y* In plenum cable routing assemblies Y* Y* Y* In riser communications raceways Y* Y* Y* In riser cable routing assemblies Y* Y* Y* In general-purpose communications raceways Y* Y* Y* In general-purpose cable routing assemblies Y* Y* Y* Note: "N" indicates that the cable type shall not be permitted to be installed in the application. "Y*" indicates that the cable type shall be permitted to be installed in the application subject to the limitations described in 770.110 and 770.113. Informational Note No. 1: Part V of Article 770 covers installation methods within buildings. This table covers the applications of listed optical fiber cables in buildings. The definition of Point of Entrance is in 770.2. Informational Note No. 2: For information on the restrictions to the installation of optical fiber cables in ducts specifically fabricated for environmental air, see 770.113(B). Table 770.154(b) Cable Substitutions Cable Type Permitted Substitutions OFNP None OFCP OFNP OFNR OFNP OFCR OFNP, OFCP, OFNR OFNG, OFN OFNP, OFNR OFCG, OFC OFNP, OFCP, OFNR, OFCR, OFNG, OFN FIGURE 770.154 Cable Substitution Hierarchy. [770.154](https://2023.antflix.net#770.154) | https://2023.antflix.net#770.154 |
Chapter 7 Special Conditions | 770.179 | Optical fiber cables shall be listed and identified in accordance with 770.179(A) through (G) and shall be marked in accordance with Table 770.179. Optical fiber cables shall have a temperature rating of not less than 60°C (140°F). The temperature rating shall be marked on the jacket of optical fiber cables that have a temperature rating exceeding 60°C (140°F). Informational Note: See UL 1651-2015, Standard for Optical Fiber Cable, for information on optical fiber cables. [770.179](https://2023.antflix.net#770.179) | https://2023.antflix.net#770.179 |
Chapter 7 Special Conditions | 770.179(A) | Types OFNP and OFCP nonconductive and conductive optical fiber plenum cables shall be suitable for use in ducts, plenums, and other space used for environmental air and shall also have adequate fire-resistant and low-smoke-producing characteristics. Informational Note: See NFPA 262-2019, Standard Method of Test for Flame Travel and Smoke of Wires and Cables for Use in Air-Handling Spaces, for one method of defining that a cable has adequate fire-resistant and low-smoke-producing characteristics where the cable exhibits a maximum peak optical density of 0.50 or less, an average optical density of 0.15 or less, and a maximum flame spread distance of 1.52 m (5 ft) or less. [770.179(A)](https://2023.antflix.net#770.179(A)) | https://2023.antflix.net#770.179(A) |
Chapter 7 Special Conditions | 770.179(B) | Types OFNR and OFCR nonconductive and conductive optical fiber riser cables shall be suitable for use in a vertical run in a shaft or from floor to floor and shall also have the fire-resistant characteristics capable of preventing the carrying of fire from floor to floor. Informational Note: See ANSI/UL 1666-2017, Standard Test for Flame Propagation Height of Electrical and Optical-Fiber Cable Installed Vertically in Shafts, for one method of defining fire-resistant characteristics capable of preventing the carrying of fire from floor to floor. [770.179(B)](https://2023.antflix.net#770.179(B)) | https://2023.antflix.net#770.179(B) |
Chapter 7 Special Conditions | 770.179(C) | Types OFNG and OFCG nonconductive and conductive general-purpose optical fiber cables shall be suitable for general-purpose use, with the exception of risers and plenums, and shall also be resistant to the spread of fire Informational Note No. 1: See CSA Vertical Flame Test - Cables in Cable Trays, as described in CSA C22.2 No. 0.3-2009 (R2019), Test Methods for Electrical Wires and Cables, for one method of defining resistant to the spread of fire for the damage (char length) not to exceed 1.5 m (4 ft 11 in.) when performing the test. Informational Note No. 2: See ANSI/UL 1685-2015, Standard for Safety for Vertical-Tray Fire-Propagation and Smoke-Release Test for Electrical and Optical-Fiber Cables, for another method of defining resistant to the spread of fire where the cables do not spread fire to the top of the tray in the UL flame exposure, vertical tray flame test. The smoke measurements in the test method are not applicable. [770.179(C)](https://2023.antflix.net#770.179(C)) | https://2023.antflix.net#770.179(C) |
Chapter 7 Special Conditions | 770.179(D) | Types OFN and OFC nonconductive and conductive optical fiber cables shall be suitable for general-purpose use, with the exception of risers, plenums, and other spaces used for environmental air, and shall also be resistant to the spread of fire. Informational Note No. 1: See ANSI/UL 1685-2015, Standard for Safety for Vertical-Tray Fire-Propagation and Smoke-Release Test for Electrical and Optical-Fiber Cables, for one method of defining resistant to the spread of fire where the cables do not spread fire to the top of the tray in the UL flame exposure, vertical tray flame test. The smoke measurements in the test method are not applicable. Informational Note No. 2: See CSA Vertical Flame Test - Cables in Cables Trays, as described in CSA C22.2 No. 0.3-2009 (R2019), Test Methods for Electrical Wires and Cables, for another method of defining resistant to the spread of fire where the damage (char length) does not exceed 1.5 m (4 ft 11 in.). Informational Note No. 3: Cable types are listed in descending order of fire resistance rating. Within each fire resistance rating, nonconductive cable is listed first because it is often substituted for conductive cable. [770.179(D)](https://2023.antflix.net#770.179(D)) | https://2023.antflix.net#770.179(D) |
Chapter 7 Special Conditions | 770.179(E) | Cables that are used for survivability of critical circuits under fire conditions shall meet either 770.179(E)(1), (E)(2), or (E)(3). [770.179(E)](https://2023.antflix.net#770.179(E)) | https://2023.antflix.net#770.179(E) |
Chapter 7 Special Conditions | 770.179(E)(1) | Cables specified in 770.179(A) through (D), and used for survivability of critical circuits, shall be marked with the additional classification using the suffix "CI" In order to maintain its listed fire rating, CI cable shall only be installed in free air in accordance with 770.24. CI cables shall only be permitted to be installed in a raceway where specifically listed and marked as part of a fire-resistive cable system as covered in 770.179(E)(2). Informational Note: See UL 2196, Standard for Fire Test for Circuit Integrity of Fire-Resistive Power, Instrumentation, Control and Data Cables, for one method of defining CI cable for establishing a minimum 2-hour fire resistance rating for the cable as specified in UL 1651, Optical Fiber Cable. UL Guide Information for Optical Cable Fiber (QAYK) contains information to identify the cable and its installation limitations to maintain the fire-resistive rating. [770.179(E)(1)](https://2023.antflix.net#770.179(E)(1)) | https://2023.antflix.net#770.179(E)(1) |
Chapter 7 Special Conditions | 770.179(E)(2) | Cables specified in 770.179(A) through (D) and 770.179(E)(1) that are part of an electrical circuit protective system shall be fire-resistive cable and identified with the protective system number on the product or on the smallest unit container in which the product is packaged and installed in accordance with the listing of the protective system. Informational Note: See UL 2196, Standard for Fire Test for Circuit Integrity of Fire-Resistive Power, Instrumentation, Control and Data Cables, for one method of defining an electrical circuit protective system for establishing a rating for the system. UL Guide Information for Electrical Circuit Integrity Systems (FHIT) contains information to identify the system and its installation limitations to maintain a minimum fire-resistive rating. [770.179(E)(2)](https://2023.antflix.net#770.179(E)(2)) | https://2023.antflix.net#770.179(E)(2) |
Chapter 7 Special Conditions | 770.179(F) | Field-assembled optical fiber cable shall comply with the following: The specific combination of jacket and optical fibers intended to be installed as a field-assembled optical fiber cable shall be one of the types in 770.179(A), (B), or (D) and shall be marked in accordance with Table 770.179.The jacket of a field-assembled optical fiber cable shall have a surface marking indicating the specific optical fibers with which it is identified for use.The optical fibers shall have a permanent marking, such as a marker tape, indicating the jacket with which they are identified for use.The jacket without fibers shall meet the listing requirements for communications raceways in 800.182(A), (B), or (C) in accordance with the cable marking. [770.179(F)](https://2023.antflix.net#770.179(F)) | https://2023.antflix.net#770.179(F) |
Chapter 7 Special Conditions | 770.179(G) | Cables shall be permitted to be surface marked to indicate special characteristics of the cable materials. Informational Note: These markings can include, but are not limited to, markings for limited-smoke halogen-free, low-smoke halogen-free, and sunlight resistance. Table 770.179 Cable Markings Cable Marking Type OFNP Nonconductive optical fiber plenum cable OFCP Conductive optical fiber plenum cable OFNR Nonconductive optical fiber riser cable OFCR Conductive optical fiber riser cable OFNG Nonconductive optical fiber general-purpose cable OFCG Conductive optical fiber general-purpose cable OFN Nonconductive optical fiber general-purpose cable OFC Conductive optical fiber general-purpose cable [770.179(G)](https://2023.antflix.net#770.179(G)) | https://2023.antflix.net#770.179(G) |
Chapter 7 Special Conditions | 770.180 | Where bonding or grounding is required, devices used to connect a shield, a sheath, or noncurrent-carrying metallic members of a cable to a bonding conductor or grounding electrode conductor shall be listed or be part of listed equipment. [770.180](https://2023.antflix.net#770.180) | https://2023.antflix.net#770.180 |
Chapter 8 Communications Systems | 800.1 | This article covers general requirements for communications systems. These general requirements apply to communications circuits, community antenna television and radio distribution systems, network-powered broadband communications systems, and premises-powered broadband communications systems, unless modified by Articles 805, 820, 830, or 840. Informational Note No. 1: See 90.2(D)(4) for installations of circuits and equipment that are not covered. Informational Note No. 2: See Part II of Article 725 for information on the installation of Class 2 and Class 3 circuits and 722.135(E) for the substitution of communications cables for Class 2 and Class 3 cables. Informational Note No. 3: See Part II of Article 760 for information on the installation of power-limited fire alarm circuits, including the substitution of communications cables for power-limited fire alarm cables. [800.1](https://2023.antflix.net#800.1) | https://2023.antflix.net#800.1 |
Chapter 8 Communications Systems | 800.2 | The requirements of 110.21(A)(2) shall apply. [800.2](https://2023.antflix.net#800.2) | https://2023.antflix.net#800.2 |
Chapter 8 Communications Systems | 800.3 | Only those sections of Chapters 1 through 7 referenced in Chapter 8 shall apply to Chapter 8. The definitions from Article 100 apply to Chapter 8. Installations of circuits and equipment shall comply with 800.3(A) through (H). [800.3](https://2023.antflix.net#800.3) | https://2023.antflix.net#800.3 |
Chapter 8 Communications Systems | 800.3(A) | As appropriate for the services provided, the output circuits derived from a network-powered broadband communications system's network interface unit (NIU) or from a premises-powered broadband communications system's network terminal shall comply with the requirements of the following:
Installations of Class 2 and Class 3 circuits — Part II of Article 725 and Parts I and II of Article 722
Installations of power-limited fire alarm circuits — Part III of Article 760
Installations of optical fiber cables — Part V of Article 770
Installations of communications circuits — Part IV of Article 805
Informational Note: The communications circuits covered by Article 805 are commonly referred to as POTS (plain old telephone service) circuits.
Installations of premises (within buildings) community antenna television and radio distribution circuits — Part V of Article 820
[800.3(A)](https://2023.antflix.net#800.3(A)) | https://2023.antflix.net#800.3(A) |
Chapter 8 Communications Systems | 800.3(B) | Circuits and equipment installed in a location that is classified in accordance with 500.5 and 505.5 shall comply with the applicable requirements of Chapter 5. [800.3(B)](https://2023.antflix.net#800.3(B)) | https://2023.antflix.net#800.3(B) |
Chapter 8 Communications Systems | 800.3(C) | The requirements of 300.22(A) shall apply. [800.3(C)](https://2023.antflix.net#800.3(C)) | https://2023.antflix.net#800.3(C) |
Chapter 8 Communications Systems | 800.3(D) | The requirements of 300.22(C)(3) shall apply. [800.3(D)](https://2023.antflix.net#800.3(D)) | https://2023.antflix.net#800.3(D) |
Chapter 8 Communications Systems | 800.3(E) | The requirements of 110.3(B) shall apply. [800.3(E)](https://2023.antflix.net#800.3(E)) | https://2023.antflix.net#800.3(E) |
Chapter 8 Communications Systems | 800.3(F) | Where optical fiber cable is used to provide a communications circuit within a building, Article 770 shall apply. [800.3(F)](https://2023.antflix.net#800.3(F)) | https://2023.antflix.net#800.3(F) |
Chapter 8 Communications Systems | 800.3(G) | Vertical installations of circuit integrity (CI) cables and conductors installed in a raceway or conductors and cables of fire-resistive cable systems shall be installed in accordance with 300.19. [800.3(G)](https://2023.antflix.net#800.3(G)) | https://2023.antflix.net#800.3(G) |
Chapter 8 Communications Systems | 800.3(H) | The requirements of 250.4(A)(5) shall apply to the metal shields of cables used for communications. [800.3(H)](https://2023.antflix.net#800.3(H)) | https://2023.antflix.net#800.3(H) |
Chapter 8 Communications Systems | 800.21 | Access to electrical equipment shall not be denied by an accumulation of wires and cables that prevents removal of panels, including suspended ceiling panels. [800.21](https://2023.antflix.net#800.21) | https://2023.antflix.net#800.21 |
Chapter 8 Communications Systems | 800.24(A) | Circuits and equipment shall be installed in a neat and workmanlike manner. Cables installed exposed on the surface of ceilings and sidewalls shall be supported by the building structure in such a manner that the cable will not be damaged by normal building use. Such cables shall be secured by hardware, including straps; staples: cable ties listed and identified for securement and support; and hangers, or similar fittings, designed and installed so as not to damage the cable. The installation shall also conform to 300.4 and 300.11. Plenum cable ties and other nonmetallic cable accessories used to secure and support cables in other spaces used for environmental air (plenums) shall be listed as having low smoke and heat release properties in accordance with 800.170. Informational Note No. 1: See ANSI/BICSI Nl-2019, Installation Practices for Telecommunications and IC Cabling and Related Cabling Infrastructure, ANSI/TIA-568.1-E-2020, Commercial Building Telecommunications Infrastructure Standard; ANSI/TIA-569-E-2019, Telecommunications Pathways and Spaces; ANSI/TIA-570-C-2012, Residential Telecommunications Infrastructure Standard; ANSI/ TIA-1005-A-2012, Telecommunications Infrastructure Standard for Industrial Premises; ANSI/ TIA-1179-A-2017, Healthcare Facility Telecommunications Infrastructure Standard; ANSI/TIA-4966-2014, Telecommunications Infrastructure Standard for Educational Facilities; and other ANSI-approved installation standards for accepted industry practices. Informational Note No. 2: See NFPA 90A-2021, Standard for the Installation of Air-Conditioning and Ventilating Systems, for discrete combustible components installed in accordance with 300.22(C). Informational Note No. 3: Paint, plaster, cleaners, abrasives, corrosive residues, or other contaminants may result in an undetermined alteration of wire and cable properties. [800.24(A)](https://2023.antflix.net#800.24(A)) | https://2023.antflix.net#800.24(A) |
Chapter 8 Communications Systems | 800.24(B) | CI cable shall be supported at a distance not exceeding 610 mm (24 in.). Cable shall be secured to the noncombustible surface of the building structure. Cable supports and fasteners shall be steel. [800.24(B)](https://2023.antflix.net#800.24(B)) | https://2023.antflix.net#800.24(B) |
Chapter 8 Communications Systems | 800.25 | The accessible portion of abandoned cables shall be removed. Where cables are identified for future use with a tag, the tag shall be of sufficient durability to withstand the environment involved. [800.25](https://2023.antflix.net#800.25) | https://2023.antflix.net#800.25 |
Chapter 8 Communications Systems | 800.26 | Installations of cables, communications raceways, cable routing assemblies in hollow spaces, vertical shafts, and ventilation or air-handling ducts shall be made so that the possible spread of fire or products of combustion will not be substantially increased. Openings around penetrations of cables, communications raceways, and cable routing assemblies through fire-resistant-rated walls, partitions, floors, or ceilings shall be firestopped using approved methods to maintain the fire resistance rating. Informational Note: Directories of electrical construction materials published by qualified testing laboratories contain many listing installation restrictions necessary to maintain the fire-resistive rating of assemblies where penetrations or openings are made. Building codes also contain restrictions on membrane penetrations on opposite sides of a fire resistance-rated wall assembly. An example is the 600 mm (24 in.) minimum horizontal separation that usually applies between boxes installed on opposite sides of the wall. Assistance in complying with 800.26 can be found in building codes, fire resistance directories, and product listings. [800.26](https://2023.antflix.net#800.26) | https://2023.antflix.net#800.26 |
Chapter 8 Communications Systems | 800.27 | No wire or cable shall be used in such a manner that its operating temperature exceeds that of its rating. [800.27](https://2023.antflix.net#800.27) | https://2023.antflix.net#800.27 |
Chapter 8 Communications Systems | 800.44 | Overhead (aerial) communications wires and cables and CATV-type coaxial cables entering buildings shall comply with 800.44(A) through (D). Informational Note: See ANSI C2-2017, National Electrical Safely Code, Part 2 Safety Rules for Overhead Lines, for additional information regarding overhead (aerial) wires and cables. [800.44](https://2023.antflix.net#800.44) | https://2023.antflix.net#800.44 |
Chapter 8 Communications Systems | 800.44(A) | If communications wires and cables or CATV-type coaxial cables and electric light or power conductors are supported by the same pole or are run parallel to each other in-span, the conditions described in 800.44(A)(1) through (A)(4) shall be met. [800.44(A)](https://2023.antflix.net#800.44(A)) | https://2023.antflix.net#800.44(A) |
Chapter 8 Communications Systems | 800.44(A)(1) | If practicable, the communications wires and cables and CATV- type coaxial cables shall be located below the electric light or power conductors. [800.44(A)(1)](https://2023.antflix.net#800.44(A)(1)) | https://2023.antflix.net#800.44(A)(1) |
Chapter 8 Communications Systems | 800.44(A)(2) | Communications wires and cables and CATV-type coaxial cables shall not be attached to a cross-arm that carries electric light or power conductors. [800.44(A)(2)](https://2023.antflix.net#800.44(A)(2)) | https://2023.antflix.net#800.44(A)(2) |
Chapter 8 Communications Systems | 800.44(A)(3) | The climbing space through wires and cables shall comply with the requirements of 225.14(B). [800.44(A)(3)](https://2023.antflix.net#800.44(A)(3)) | https://2023.antflix.net#800.44(A)(3) |
Chapter 8 Communications Systems | 800.44(A)(4) | Supply service drops and sets of overhead service conductors of 0 volts to 750 volts running above and parallel to communications wires and cables and CATV-type coaxial service drops shall have a minimum separation of 300 mm (12 in.) at any point in the span, including the point of their attachment to the building, provided that the ungrounded conductors are insulated and that a clearance of not less than 1.0 m (40 in.) is maintained between the two services at the pole. [800.44(A)(4)](https://2023.antflix.net#800.44(A)(4)) | https://2023.antflix.net#800.44(A)(4) |
Chapter 8 Communications Systems | 800.44(B) | Communications wires and cables and CATV-type coaxial cables shall have a vertical clearance of not less than 2.5 m (8 ft) from all points of roofs above which they pass. Exception No. 1: Communications wires and cables and CATV-type coaxial cables shall not be required to have a vertical clearance of not less than 2.5 m (8 ft) above auxiliary buildings, such as garages and the like. Exception No. 2: A reduction in clearance above only the overhanging portion of the roof to not less than 450 mm (18 in.) shall be permitted if (1) not more than 1.2 m (4 ft) of communications and CATV-type service-drop conductors pass above the roof overhang and (2) they are terminated at a through- or above-the-roof raceway or approved support. Exception No. 3: Where the roof has a slope of not less than 100 mm in 300 mm (4 in. in 12 in.), a reduction in clearance to not less than 900 mm (3 ft) shall be permitted. Informational Note: See ANSI/IEEE C2-2017, National Electrical Safety Code, Part 2, Safety Rules for Overhead Lines, for additional information regarding overhead (aerial) wire and cables. [800.44(B)](https://2023.antflix.net#800.44(B)) | https://2023.antflix.net#800.44(B) |
Chapter 8 Communications Systems | 800.44(C) | Overhead (aerial) communications wires and cables and CATV-type coaxial cables shall be permitted to be attached to an above-the-roof raceway mast that does not enclose or support conductors of electric light or power circuits. [800.44(C)](https://2023.antflix.net#800.44(C)) | https://2023.antflix.net#800.44(C) |
Chapter 8 Communications Systems | 800.44(D) | Communications and CATV-type coaxial cables extending between buildings or structures, and also the supports or attachment fixtures, shall be identified and shall have sufficient strength to withstand the loads to which they might be subjected. Exception: If a communications cable or a CATV-type coaxial cable does not have sufficient strength to be self-supporting, it shall be attached to a supporting messenger cable that, together with the. attachment fixtures or supports, shall be acceptable for the purpose and shall have sufficient strength to withstand the loads to which they may be subjected. [800.44(D)](https://2023.antflix.net#800.44(D)) | https://2023.antflix.net#800.44(D) |
Chapter 8 Communications Systems | 800.44(E) | Where attached to buildings, communications wires and cables and CATV-type coaxial cables shall be securely fastened in such a manner that they will be separated from other conductors in accordance with 800.44(E)(1) and (E)(2). [800.44(E)](https://2023.antflix.net#800.44(E)) | https://2023.antflix.net#800.44(E) |
Chapter 8 Communications Systems | 800.44(E)(1) | The communications wires and cables and CATV-type coaxial cables shall have a separation of at least 100 mm (4 in.) from electric light, power, Class 1, or non-power-limited fire alarm circuit conductors not in raceway or cable, or shall be permanently separated from conductors of the other system by a continuous and firmly fixed nonconductive barrier in addition to the insulation on the wires. [800.44(E)(1)](https://2023.antflix.net#800.44(E)(1)) | https://2023.antflix.net#800.44(E)(1) |
Chapter 8 Communications Systems | 800.44(E)(2) | Communications wires and cables and CATV-type coaxial cables shall be installed so that there will be no unnecessary interference in the maintenance of the separate systems. In no case shall the wires, cables, messenger strand, or equipment of one system cause abrasion to the wires, cables, messenger strand, or equipment of any other system. [800.44(E)(2)](https://2023.antflix.net#800.44(E)(2)) | https://2023.antflix.net#800.44(E)(2) |
Chapter 8 Communications Systems | 800.47 | Underground communications wires and cables, CATV-type coaxial cables, and network-powered broadband communications cables entering buildings shall comply with 800.47(A) and (B). The requirements of 310.10(C) shall not apply to communications wires and cables and CATV-type coaxial cables. [800.47](https://2023.antflix.net#800.47) | https://2023.antflix.net#800.47 |
Chapter 8 Communications Systems | 800.47(A) | Underground communications wires and cables, CATV-type coaxial cables, and network-powered broadband communications cables in a raceway, pedestal, handhole enclosure, or manhole containing electric light, power, Class 1, or non-power-limited fire alarm circuit conductors shall be in a section separated from such conductors by means of brick, concrete, or tile partitions or by means of a suitable barrier. [800.47(A)](https://2023.antflix.net#800.47(A)) | https://2023.antflix.net#800.47(A) |
Chapter 8 Communications Systems | 800.47(B) | Direct-buried communications wires and cables, CATV-type coaxial cables, and network-powered broadband communications cables shall be separated at least 300 mm (12 in.) from conductors of any light or power, non-power-limited fire alarm circuit conductors, or Class 1 circuit. Exception No. 1: Separation shall not be required if electric service conductors or all the direct-buried communications wires and cables, CATV-type coaxial cables, and network-powered broadband communications cables are installed in raceways or have metal cable armor. Exception No. 2: Separation shall not be required under one of the following conditions: (1) If the. electric light or power branch-circuit or feeder conductors or Class 1 circuit conductors are installed in a raceway or in metal-sheathed, metal-clad, or Type UF or Type USE cables (2) If all the direct-buried communications wires cables, CATV-type coaxial cables, and network-powered broadband communications cables have metal cable armor or are installed in raceway [800.47(B)](https://2023.antflix.net#800.47(B)) | https://2023.antflix.net#800.47(B) |
Chapter 8 Communications Systems | 800.48 | Unlisted outside plant communications cables and unlisted outside plant CATV-type coaxial cables shall be permitted to be installed in building spaces other than risers, ducts used for environmental air, plenums used for environmental air, and other spaces used for environmental air if all of the following applies: The length of the cable within the building, measured from its point of entrance, does not exceed 15 m (50 ft).The cable enters the building from the outside.The unlisted outside plant communications cable is terminated in an enclosure or on a listed primary protector, or the unlisted outside plant CATV type coaxial cable is terminated at a grounding block.The point of entrance shall be permitted to be extended from the penetration of the external wall, roof, or floor slab by continuously enclosing the entrance cables in rigid metal conduit (RMC) or intermediate metal conduit (IMC) to the point of emergence.Informational Note No. 1: Splice cases or terminal boxes, both metallic and plastic types, are typically used as enclosures for splicing or terminating communications cables.Informational Note No. 2: This section limits the length of unlisted outside plant cable to 15 m (50 ft) from the point of entrance, while 805.90(B) requires that the primary protector be located as close as practicable to the point of entrance of the cable. Therefore, in installations requiring a primary protector, the outside plant cable may not extend 15 m (50 ft) into the building if it is practicable to place the primary protector closer to the point of entrance. [800.48](https://2023.antflix.net#800.48) | https://2023.antflix.net#800.48 |
Chapter 8 Communications Systems | 800.49 | Metal conduit containing entrance wire or cable shall be connected by a bonding conductor or grounding electrode conductor to a grounding electrode or, where present, the building grounding electrode system in accordance with 800.100(B). [800.49](https://2023.antflix.net#800.49) | https://2023.antflix.net#800.49 |
Chapter 8 Communications Systems | 800.53 | Where practicable on buildings, a separation of at least 1.8 m (6 ft) shall be maintained between lightning protection conductors and all communications wires and cables and CATV-type coaxial cables. Informational Note No. 1: See ANSI C2-2017 National Electrical Safety Code, Part 2, Safety Rules for Overhead Lines, for additional information regarding overhead (aerial) wires and cables. Informational Note No. 2: See NFPA 780-2020, Standard for the Installation of Lightning Protection Systems, for information on calculation of separation distances using the sideflash equation. [800.53](https://2023.antflix.net#800.53) | https://2023.antflix.net#800.53 |
Chapter 8 Communications Systems | 800.100(A)(1) | The bonding conductor or grounding electrode conductor shall be listed and shall be permitted to be insulated, covered, or bare. [800.100(A)(1)](https://2023.antflix.net#800.100(A)(1)) | https://2023.antflix.net#800.100(A)(1) |
Chapter 8 Communications Systems | 800.100(A)(2) | The bonding conductor or grounding electrode conductor shall be copper or other corrosion-resistant conductive material, stranded or solid. [800.100(A)(2)](https://2023.antflix.net#800.100(A)(2)) | https://2023.antflix.net#800.100(A)(2) |
Chapter 8 Communications Systems | 800.100(A)(3) | The bonding conductor or grounding electrode conductor shall not be smaller than 14 AWG. The bonding conductor or grounding electrode conductor shall have a current-carrying capacity not less than the aggregate of the grounded metal cable sheath member, the metal strength member(s), and the protected conductor(s) of the communications cable, or the outer sheath of the coaxial cable, as applicable. The bonding conductor or grounding electrode conductor shall not be required to exceed 6 AWG. [800.100(A)(3)](https://2023.antflix.net#800.100(A)(3)) | https://2023.antflix.net#800.100(A)(3) |
Chapter 8 Communications Systems | 800.100(A)(4) | The bonding conductor or grounding electrode conductor shall be as short as practicable. In one- and two- family dwellings, the bonding conductor or grounding electrode conductor shall be as short as practicable, not to exceed 6.0 m (20 ft) in length. Informational Note: Similar bonding conductor or grounding electrode conductor length limitations applied at apartment buildings and commercial buildings help to reduce voltages that may be developed between the building's power and communications systems during lightning events. See ANSI/TIA-607-D-2019, Generic Telecommunications Bonding and Grounding (Earthing) for Customer Premises, which includes useful information to reduce such voltages. Exception: In one- and two-family dwellings if it is not practicable to achieve an overall maximum bonding conductor or grounding electrode conductor length of 6.0 m (20 ft), a separate ground rod meeting the minimum dimensional criteria of 800.100(B)(3)(2) or (B)(3)(3) shall be driven, the bonding conductor or grounding electrode conductor shall be connected to the ground rod in accordance with 800.100(C), and the ground rod shall be connected to the power grounding electrode system in accordance with 800.100(D). [800.100(A)(4)](https://2023.antflix.net#800.100(A)(4)) | https://2023.antflix.net#800.100(A)(4) |
Chapter 8 Communications Systems | 800.100(A)(5) | The bonding conductor or grounding electrode conductor shall be run in as straight a line as practicable. [800.100(A)(5)](https://2023.antflix.net#800.100(A)(5)) | https://2023.antflix.net#800.100(A)(5) |
Chapter 8 Communications Systems | 800.100(A)(6) | Bonding conductors and grounding electrode conductors shall be protected where exposed to physical damage. If the bonding conductor or grounding electrode conductor is installed in a metal raceway, both ends of the raceway shall be bonded to the contained conductor or to the same terminal or electrode to which the bonding conductor or grounding electrode conductor is connected. [800.100(A)(6)](https://2023.antflix.net#800.100(A)(6)) | https://2023.antflix.net#800.100(A)(6) |
Chapter 8 Communications Systems | 800.100(B) | The bonding conductor or grounding electrode conductor shall be connected in accordance with 800.100(B)(1), (B)(2), or (B)(3). [800.100(B)](https://2023.antflix.net#800.100(B)) | https://2023.antflix.net#800.100(B) |
Chapter 8 Communications Systems | 800.100(B)(1) | If the building or structure served has an intersystem bonding termination as required by 250.94, the bonding conductor shall be connected to the intersystem bonding termination. Informational Note: Informational Note Figure 800.100(B)(1) illustrates the connection of the bonding conductor in buildings or structures equipped with an intersystem bonding termination or a terminal block providing access to the building grounding means. Informational Note Figure 800.100(B)(1) Illustration of a Bonding Conductor in a Communications Installation Equipped With an Intersystem Bonding Termination or Terminal Block Providing Access To the Building Grounding Means. [800.100(B)(1)](https://2023.antflix.net#800.100(B)(1)) | https://2023.antflix.net#800.100(B)(1) |
Chapter 8 Communications Systems | 800.100(B)(2) | If an intersystem bonding termination is established, 250.94(A) shall apply. If the building or structure served has no intersystem bonding termination, the bonding conductor or grounding electrode conductor shall be connected to the nearest accessible location on one of the following: The building or structure grounding electrode system as covered in 250.50The power service accessible means external to enclosures using the options identified in 250.94(A), ExceptionThe nonflexible metal power service racewayThe service equipment enclosureThe grounding electrode conductor or the grounding electrode conductor metal enclosure of the power serviceThe grounding electrode conductor or the grounding electrode of a building or structure disconnecting means that is connected to a grounding electrode as covered in 250.32The grounded interior metal water piping system, within 1.5 m (5 ft) from its point of entrance to the building, as covered in 250.52A bonding device intended to provide a termination point for the bonding conductor (intersystem bonding) shall not interfere with the opening of an equipment enclosure. A bonding device shall be mounted on nonremovable parts. A bonding device shall not be mounted on a door or cover even if the door or cover is nonremovable.For purposes of this section, the mobile home service equipment or the mobile home disconnecting means located within 9.0 m (30 ft) of the exterior wall of the mobile home it serves, or at a mobile home disconnecting means connected to an electrode by a grounding electrode conductor in accordance with 250.32 and located within 9.0 m (30 ft) of the exterior wall of the mobile home it serves, shall be considered to meet the requirements of this section.Informational Note: See Informational Note Figure 800.100(B)(2) for an illustration of a grounding electrode conductor and a bonding conductor in a communications installation not equipped with an intersystem bonding termination or terminal block. Informational Note Figure 800.100(B)(2) Illustration of a Grounding Electrode Conductor and a Bonding Conductor in a Communications Installation Not Equipped with an Intersystem Bonding Termination or Terminal Block Providing Access to the Building Grounding Means. [800.100(B)(2)](https://2023.antflix.net#800.100(B)(2)) | https://2023.antflix.net#800.100(B)(2) |
Chapter 8 Communications Systems | 800.100(B)(3) | If the building or structure served has no intersystem bonding termination or grounding means, as described in 800.100(B)(2), the grounding electrode conductor shall be connected to one of the following: To any one of the individual grounding electrodes described in 250.52(A)(1), (A)(2), (A)(3), or (A)(4)If the building or structure served has no intersystem bonding termination or grounding means, as described in 800.100(B)(2) or (B)(3)(1), to any one of the individual grounding electrodes described in 250.52(A)(5), (A)(7), and (A)(8)For communications circuits covered in Article 805 or network-powered broadband communications systems covered in Article 830, to a ground rod or pipe not less than 1.5 m (5 ft) in length and 12.7 mm (0.5 in.) in diameter, driven, where practicable, into permanently damp earth and separated from lightning protection system conductors, as covered in 800.53, and at least 1.8 m (6 ft) from electrodes of other systemsSteam pipes, hot water pipes, or lightning protection system conductors shall not be employed as grounding electrodes or as a bonding or grounding electrode conductor for protectors and grounded metal members. [800.100(B)(3)](https://2023.antflix.net#800.100(B)(3)) | https://2023.antflix.net#800.100(B)(3) |
Chapter 8 Communications Systems | 800.100(C) | Connections to grounding electrodes shall comply with 250.70. [800.100(C)](https://2023.antflix.net#800.100(C)) | https://2023.antflix.net#800.100(C) |
Chapter 8 Communications Systems | 800.100(D) | A bonding jumper not smaller than 6 AWG copper or equivalent shall be connected between the grounding electrode and power grounding electrode system at the building or structure served if separate electrodes are used. Exception: Bonding of electrodes at mobile homes shall be in accordance with 800.106. Informational Note No. 1: See 250.60 for connection to a lightning protection system. Informational Note No. 2: Bonding together of all separate electrodes limits potential differences between them and between their associated wiring systems. [800.100(D)](https://2023.antflix.net#800.100(D)) | https://2023.antflix.net#800.100(D) |
Chapter 8 Communications Systems | 800.106(A) | Grounding shall comply with 800.106(A)(1) and (A)(2). [800.106(A)](https://2023.antflix.net#800.106(A)) | https://2023.antflix.net#800.106(A) |
Chapter 8 Communications Systems | 800.106(A)(1) | Where there is no mobile home service equipment located within 9.0 m (30 ft) of the exterior wall of the mobile home it serves, grounding shall comply with one of the following: The following components (if present) shall be connected to a grounding electrode in accordance with 800.100(B)(3):Primary protector grounding terminalNetwork interface unitCoaxial cable shield groundSurge arrester grounding terminalNetwork-powered broadband communications cable shieldNetwork-powered broadband communications cable metal members not used for communications or poweringThe non-current-carrying metal members of optical fiber cables shall be connected to a grounding electrode in accordance with 770.106(A)(1). The network terminal, if required to be grounded, shall be connected to a grounding electrode in accordance with 800.106(A)(1)(1). The grounding electrode shall be bonded in accordance with 770.106(B). [800.106(A)(1)](https://2023.antflix.net#800.106(A)(1)) | https://2023.antflix.net#800.106(A)(1) |
Chapter 8 Communications Systems | 800.106(A)(2) | Where there is no mobile home disconnecting means grounded in accordance with 250.32 and located within 9.0 m (30 ft) of the exterior wall of the mobile home it serves, grounding shall comply with one of the following: The following components (if present) shall be connected to a grounding electrode in accordance with 800.100(B)(3):Primary protector grounding terminalNetwork interface unitNetwork-powered broadband communications shieldNetwork-powered broadband communications cable metal members not used for communications or poweringThe non-current-carrying metal members of optical fiber cables shall be connected to a grounding electrode in accordance with 770.106(A)(2). The network terminal, if required to be grounded, shall be connected to a grounding electrode in accordance with 800.106(A)(2). The grounding electrode shall be bonded in accordance with 770.106(B). [800.106(A)(2)](https://2023.antflix.net#800.106(A)(2)) | https://2023.antflix.net#800.106(A)(2) |
Chapter 8 Communications Systems | 800.106(B) | The primary protector grounding terminal or grounding electrode, network-powered broadband communications cable grounding terminal, or network interface unit grounding terminal shall be bonded together and connected to the metal frame or available grounding terminal of the mobile home with a copper conductor not smaller than 12 AWG under either of the following conditions: If there is no mobile home service equipment or disconnecting means as in 800.106(A)If the mobile home is supplied by cord and plug [800.106(B)](https://2023.antflix.net#800.106(B)) | https://2023.antflix.net#800.106(B) |
Chapter 8 Communications Systems | 800.110(A) | Wires and cables shall be permitted to be installed in raceways that comply with 800.110(A)(1), 800.110(A)(2), or 800.110(A)(3). Medium-power network-powered broadband communications cables shall not be installed in raceways that comply with 800.110(A)(2). [800.110(A)](https://2023.antflix.net#800.110(A)) | https://2023.antflix.net#800.110(A) |
Chapter 8 Communications Systems | 800.110(A)(1) | Wires and cables shall be permitted to be installed in any raceway included in Chapter 3. The raceways shall be installed in accordance with Chapter 3. [800.110(A)(1)](https://2023.antflix.net#800.110(A)(1)) | https://2023.antflix.net#800.110(A)(1) |
Chapter 8 Communications Systems | 800.110(A)(2) | 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 electrical nonmetallic tubing (ENT) apply. [800.110(A)(2)](https://2023.antflix.net#800.110(A)(2)) | https://2023.antflix.net#800.110(A)(2) |
Chapter 8 Communications Systems | 800.110(A)(3) | 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(A)(3)](https://2023.antflix.net#800.110(A)(3)) | https://2023.antflix.net#800.110(A)(3) |
Chapter 8 Communications Systems | 800.110(B) | The raceway fill requirements of Chapters 3 and 9 shall apply to medium-power network-powered broadband communications cables. [800.110(B)](https://2023.antflix.net#800.110(B)) | https://2023.antflix.net#800.110(B) |
Chapter 8 Communications Systems | 800.110(C) | 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)](https://2023.antflix.net#800.110(C)) | https://2023.antflix.net#800.110(C) |
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