Carlon Structured Cable Management Systems Handbook - Low Res User Manual

Page 54

Optical-Fiber Cable Installed Vertically in Shafts.

(C) Type CMG. Type CMG general-purpose communi-
cations cable shall be listed as being suitable for gener-
al-purpose communications 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 (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.

(D) Type CM. Type CM communications cable shall
be listed as being suitable for general-purpose commu-
nications 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 that the cables do not spread fire to the
top of the tray in the vertical-tray flame test in
ANSI/UL 1581-1991 Reference 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) Type CMX. Type CMX limited use communications
cable shall be listed as being suitable for use in
dwellings and for use in raceway and shall also be
listed as being resistant to flame spread.

FPN: One method of determining that cable is
resistant to flame spread is by testing the cable to
the VW-1 (vertical-wire) flame test in ANSI/UL 1581-
1991 Reference Standard for Electrical Wires, Cables
and Flexible Cords.

(F) Type CMUC Under-Carpet Wire and Cable. Type
CMUC under-carpet communications wire and cable
shall be listed as being suitable for under-carpet use and
shall also be listed as being resistant to flame spread.

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