The provisions of Article 770 of NFPA 70 are adopted by reference with the following modifications:
1. Revise section 770.110 to read:
"Raceways and Cable Routing Assemblies for Optical Fiber Cables.
(A) Types of Raceways. Optical fiber cables shall be permitted to be installed in any raceway that complies with either 770.110(A)(1) or (A)(2) and in cable routing assemblies installed in compliance with 770.110(C).
(1) Raceways Recognized in Chapter 3. Optical fiber 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.
(2) Communications Raceways. Optical fiber cables shall be permitted to be installed in listed plenum communications raceway, listed riser communications raceways, and listed general- purpose optical fiber raceway selected in accordance with the provisions of 770.113, 800.110 and 800.113.
(B) Raceway Fill for Optical Fiber Cables. Raceway fill for optical fibers cables shall comply with either 770.110(B)(1) or (B)(2).
(1) Without Electric Light or Power Conductors. 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.
(2) Nonconductive Optical Fiber Cables with Electric Light or Power Conductors. 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.
(C) Cable Routing Assemblies. Optical fiber cables shall be permitted to be installed in riser cable routing assemblies, and general-purpose cable routing assemblies selected in accordance with the provisions of 800.113 and Table 880.154(c), listed in accordance with 800.182, and installed in accordance with 770.110(C)(1) and (C)(2).
(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).
(2) Vertical Support. Vertical runs of cable routing assemblies shall be supported at intervals not exceeding 1.2 m (4 ft), unless listed for other support intervals, and shall not have more than one joint between supports."
2. Revise section 770.113 to read:
"Installation of Optical Fiber Cables. Installation of optical fiber cables shall also comply with 770.13(A) through (J). Installation of raceways shall comply with 770.110.
(A) Listing. Optical fiber cables installed in buildings shall be listed in accordance with 770.110.
Exception: Optical fiber cables that comply with 770.48 shall not be required to be listed.
(B) Ducts Specifically Fabricated for Environmental Air. Wires and cables installed in ducts specifically fabricated for environmental air shall be installed in accordance with 300.22(B).
(C) Other Spaces Used for Environmental Air (Plenums). Wires and cables installed in other spaces used for environmental air (plenums) shall be installed in accordance with 300.22(C).
(D) Risers – Cables in Vertical Runs. The following cables shall be permitted in vertical runs penetrating one or more floors and in vertical runs in a shaft:
(1) Types OFNP, OFCP, OFNR, and OFCR cables
(2) Types OFNP, OFCP, OFNR, and cables installed in:
a. Plenum communications raceway
b. Riser communications raceway
c. Riser cable routing assemblies
(E) Risers – Cables in Metal Raceways. The following cables shall be permitted in metal raceways in a riser having firestops at each floor:
(1) Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC cables
(2) Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC cables installed in:
a. Plenum communications raceway
b. Riser communications raceway
c. General-purpose communication raceways
Informational Note: See 770.26 for firestop requirements for floor penetrations.
(F) Risers – Cables in Fireproof Shafts. The following cables shall be permitted to be installed in fireproof riser shafts having firestops at each floor:
(1) Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC cables
(2) Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC cables installed in:
a. Plenum communications raceway
b. Riser communications raceway
c. Riser cable routing assemblies
d. General-purpose communication raceways
e. General-purpose cable routing assemblies
Informational Note: See 770.26 for firestop requirements for floor penetrations.
(G) Risers – One- and Two-Family Dwellings. The following cables shall be permitted in one- and two- family dwellings:
(1) Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC cables
(2) Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC cables installed in:
a. Plenum communications raceway
b. Riser communications raceway
c. Riser cable routing assemblies
d. General-purpose communication raceways
e. General-purpose cable routing assemblies
(H) Cable Trays. The following cables shall be permitted to be supported by cable trays:
(1) Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC cables
(2) Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC cables installed in:
a. Plenum communications raceway
b. Riser communications raceway
c. General-purpose communication raceways
(I) Distributing Frames and Cross-Connect Arrays. The following cables shall be permitted to be installed in distributing frames and cross-connect arrays:
(1) Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC cables
(2) Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC cables installed in:
a. Plenum communications raceway
b. Riser communications raceway
c. Riser cable routing assemblies
d. General-purpose communication raceways
e. General-purpose cable routing assemblies
(J) Other Building Locations. The following cables shall be permitted to be installed in building locations other than the locations covered in 770.113(B) through (I):
(1) Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC cables
(2) Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC cables installed in:
a. Plenum communications raceway
b. Riser communications raceway
c. Riser cable routing assemblies
d. General-purpose communication raceways
e. General-purpose cable routing assemblies
(3) Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, AND OFC cables installed in a raceway of a type recognized in Chapter 3."
3. Revise Table 770.154(a) to read:
"Applications of Listed Optical Fiber Cables in Buildings
Applications | Cable Type
| |||
OFNP, OFCP | OFNR, OFCR | OFNG, OFCG, OFN, OFC
| ||
Applications | Cable Type
| |||
OFNP, OFCP | OFNR, OFCR | OFNG, OFCG, OFN, OFC
| ||
In dusts specifically fabricated for environmental air as described in 300.22(B) | In fabricated ducts | N | N | N |
In metal raceway that complies with 300.22(B) | Y* | Y* | Y* | |
In other spaces used for environmental air as described in 300.22(C) | In other spaces used for environmental air | N | N | N |
In metal raceway that complies with 300.22(C) | 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 riser optical fiber and 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 raceways | 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: An "N" indicates that the cable type is not permitted to be installed in the application. A "Y*" indicates that the cable is 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 and raceways, and cable routing assemblies in buildings. Optical fiber entrance cables that have not emerged from the rigid metal conduit or intermediate metal conduit are not considered to be in the building.
Informational Note No. 2: For information on the restrictions to the installation of optical fiber cables in fabricated ducts see 770.113(B)."