OFCG, or OFC. Such cables shall be permitted to be installed in listed general-purpose optical fiber raceways, listed riser optical fiber raceways, and listed plenum optical fiber raceways.

(D) Cable Trays. Optical fiber cables of the types listed in Table 770.179 shall be permitted to be installed in cable trays.

FPN: It is not the intent to require that these optical fiber cables be listed specifically for use in cable trays.

(E) Cable Substitutions. The substitutions for optical fi ber cables listed in Table 770.154(E) and illustrated in Figure 770.154(E) shall be permitted.

Table 770.154(E) Cable Substitutions
Cable Type Permitted Substitutions

OFNP None OFCP OFNP OFNR OFNP

OFCR OFNP, OFCP, OFNR

\jrnr urur

1 ' ' '

Riser OFNR OFCR

' ' ' '

General purpose OFNG OFCG

O :N O :C

[A]—*{B] Cable A shall be permitted to be used in place of cable B. Figure 770.154(E) Cable Substitution Hierarchy.

(F) Hazardous (Classified) Locations. Cables installed in hazardous (classified) locations shall be any type indicated in Table 770.154(E). Cables shall be sealed in accordance with the requirements of

501.15,502.15,505.16, or 506.16, as applicable.

VI. Listing Requirements

770.179 Optical Fiber Cables. Optical fiber cables shall be listed in accordance with 770.179(A) through (D) and shall be marked in accordance with Table 770.179.

(A) Types OFNP and OFCP. Types OFNP and OFCP nonconductive and conductive optical fiber plenum cables shall be listed as being suitable for use in ducts, plenums, and other space used for environmental air and shall also be listed as having adequate fire resistant and low smoke producing characteristics.
FPN: One method of defining a cable that is low smoke producing cable and fire-resistant cable is that the cable exhibits a maximum peak optical density of 0.5 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 when tested in accordance with NFPA 262-2007, Standard Method of Test for Flame Travel and Smoke of Wires and Cables for Use in Air-Handling Spaces.
(B) Types OFNR and OFCR. Types OFNR and OFCR nonconductive and conductive optical fiber riser cables shall be listed as being suitable for use in a vertical run in a shaft or from floor to floor and shall also be listed as having the fire-resistant characteristics capable of preventing the carrying of fire from floor to floor.
FPN: One method of defining fire-resistant characteristics capable of preventing the carrying of fire from floor to floor is that the cables pass the requirements of ANSI/UL 1666-2002, Standard Test for Flame Propagation Height of Electrical and Optical- Fiber Cable Installed Vertically in Shafts.
(C) Types OFNG and OFCG. Types OFNG and OFCG nonconductive and conductive general-purpose optical fiber cables shall be listed as being suitable for general- purpose use, with the exception of risers and plenums, and shall also be listed as being resistant to the spread of fire.
FPN: One method of defining resistant to the spread of fire is for the damage (char length) not to exceed 1.5 m