Resources
NEC Substitution Chart

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Fire Resistance Level
Test Requirement
NEC Article
800
725
760
Plenum Cables
(Highest)
UL910 (Steiner Tunnel)
CSA-FT6 (Steiner Tunnel)
MPP
CMP
CL3P
CL2P
FPLP
Riser Cables
Multiple Floors
UL-1666 (Vertical Shaft)
CSA-FT4 (Vertical Tray)
MPR
CMR
CL3R
CL2R
FPLR
General Purpose Cables UL-1581 (Vertical Tray)
MP CM
CL3
FPL
Residential Cables
(Lowest) Restricted Use
CSA-FT4 (Vertical Tray)
UL-1581 VW-1
CMX

CL2
CL3X

Cables with a higher resistance level may be substituted for those with a lower fire resistance level.

Non-fire rated outside plant telephone cables may not run outside of a rigid metal conduit more than 50 feet from the point of entrance into a building.

Cables rated CMG or CM may be used in runs penetrating one floor. (NEC 800-53)


Type Decription
CM Communications Wires and Cables
CL2 and CL3 Class2 and Class 3
Remote-Control, Signaling, and Power-Limited Cables
FPL
Power-Limited
Fire Alarm Cables
MP Multipurpose Cables
PLTC Power-Limited Tray Cables


NEC Substitution Chart


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