Carlon Structured Cable Management Systems Handbook - Low Res User Manual

Page 61

Cable Permitted
Type

Use

References

Substitutions

CMP

Communications
plenum cable

800-53(a)

MPP

CMR

Communications MPP, CMP,
riser cable

800-53(b)

MPR

CMG,

Communications MPP, CMP,

general-purpose MPR, CMR,
cable

800-53(d)

MPG, MP

CMX

Communications

MPP, CMP,

cable, limited use 800-53(d)

MPR, CMR,
MPG, MP,
CMG, CM

Note: See Figure 800.53, Cable substitution hierarchy.

Table 800.53 Cable Uses and Permitted Substitutions

(6) Under Carpets. Type CMUC under carpet com-

munications wires and cables shall be permitted
to be installed under carpet.

(F) Hybrid Power and Communications Cable.
Hybrid power and communications cable listed in
accordance with 800.51(J) shall be permitted to be
installed in one-and two-family dwellings.
(G) Cable Substitutions. The uses and permitted
substitutions for communications cables listed in Table
800.53 shall be considered suitable for the purpose
and shall be permitted.
FPN: For information on Types CMP, CMR, CMG, CM,
and CMX cables, see 800.51

D) HIGH AND LOW/NO VOLTAGE COMBINATIONS.

TIA/EIA 570-A 8.1.5.1. states that when “telecommunica-
tions cable containing metallic elements (e.g., UTP, coaxial
cable) is placed alongside unshielded electrical power con-
ductors inside wall space or ceiling space, it shall have a
minimum separation of 50.4 mm (2 in.) from power wire.”
This section also states “Separation of telecommunications
cable with respect to electrical power conductors shall meet
applicable electrical codes.”
The National Electrical Code (NEC), Article 800.52(A)(1)(c)
Exception 1 allows high voltage (power conductors) and low
voltage (telecommunications) cables be placed in raceways,
compartments, and boxes, as long as the two types of circuits
are separated by a barrier.
While the NEC may seem inconsistent with the requirements
of TIA/EIA 8.1.5.1., it is expected that the NEC take prece-
dence since it is an adopted code.

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