Carlon Structured Cable Management Systems Handbook - Low Res User Manual

Page 48

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 resistance to the spread of
fire is for the damage (char length) not to exceed 1.5m
(4 ft 11 in) when performing the vertical flame test —
cables in cable trays, as described in Test Methods for
Electrical Wires and Cables, CSA C22.2 No. 0.3-M 1985.

(D) Types OFN and OFC. Types OFN and OFC non-
conductive and conductive optical fiber cables shall be
listed as being suitable for general-purpose use, with the
exception of risers, plenums, and other space used for
environmental air, and shall also be listed as being resist-
ant to the spread of fire.

FPN: One method of defining resistant to the spread of
fire is that the cables do not spread fire to the top of
the tray in the vertical-tray flame test in the Reference
ANSI/UL 1581-1991, Standard for Electrical Wires, Cables
and Flexible Cords.

Another method of defining resistant to the spread of
fire is for the damage (char length) not to exceed 1.5 m
(4 ft 11 in) when performing the vertical flame test – cables
in cable trays, as described in CSA C22.2 No. 0.3-M-1985
Test Methods for Electrical Wires and Cables.

(E) Plenum Optical Fiber Raceway. Plenum optical fiber
raceways shall be listed as having adequate fire-resistant
and low smoke-producing characteristics.

(F) Riser Optical Fiber Raceway. Riser optical fiber
raceways shall be listed as having fire-resistant character-
istics capable of preventing the carrying of fire from floor
to floor.

(G) General-Purpose Optical Fiber Cable Raceway.
General-purpose optical fiber cable raceway shall be listed
as being resistant to the spread of fire.

770.53 Applications of Listed Optical Fiber
Cables and Raceways. Nonconductive and conductive
optical fiber cables shall comply with any of the require-
ments given in 770.53(A) through (E) or where cable sub-
stitutions are made as shown in 770.53(F).
(A) Plenum. Cables installed in ducts, plenums, and other
spaces used for environmental air shall be Type OFNP or
OFCP. Abandoned cables shall not be permitted to remain.
Types OFNR, OFCR, OFNG, OFN, OFCG, and OFC cables

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