Carlon Structured Cable Management Systems Handbook - Low Res - Manual (Page 58)

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(2) Other Applications. Communications wires and
cables shall be separated at least 50 mm (2 in.)
from conductors of any electric light, power, Class
1, nonpower-limited fire alarm, or medium power
network-powered broadband communications
circuits.
Exception No. 1: Where either (1) all of the
conductors of the electric light, power, Class 1,
nonpower-limited fire alarm, and medium
power network-powered broadband communi-
cations circuits are in a raceway or in metal-
sheathed, metal-clad, nonmetallic-sheathed,
Type AC, or Type UF cables, or (2) all of the
conductors of communications circuits are
encased in raceway
.
Exception No. 2: Where the communications
wires and cables are permanently separated
from the conductors of electric light, power,
Class 1, nonpower-limited fire alarm, and
medium power network-powered broadband
communications circuits by a continuous and
firmly fixed nonconductor, such as porcelain
tubes or flexible tubing, in addition to the
insulation on the wire.
(B) Spread of Fire or Products of Combustion.
Installations 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 is
not substantially increased. Openings around penetra-
tions through fire resistance-rated walls, partitions,
floors, or ceilings shall be firestopped using approved
methods to maintain the fire resistance rating.
The accessible portion of abandoned communications
cables shall not be permitted to remain.
FPN: 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.
(C) Equipment in Other Space Used for
Environmental Air. Section 300.22(C) shall apply.
(D) Cable Trays. Types MPP, MPR, MPG, and MP
multi-purpose cables and Types CMP, CMR, CMG, and
CM communications cables shall be permitted to be
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