This Standard states the construction, test, and marking
requirements covering the safety of electrical and
electrical/optical-fiber cables rated 60°C to 250°C and intended
for 150-volt and lower-potential non-power-limited circuits that
are controlled and powered by a fire-alarm system. These cables are
for installation in buildings as specified in Article 760 and other
applicable parts of the National Electrical Code (NEC), NFPA 70.
Cables covered by these requirements are:
a) Type NPLFP – These cables are for installation in ²other
spaces used for environmental air² [See NEC 300-22(c)].
b) Type NPLFR – These cables are for installation in vertical
runs in a shaft or for installation in vertical runs that penetrate
more than one floor.
c) Type NPLF – These cables are for general-purpose fire-alarm
use in buildings. General purpose does not include use as plenum or
These cables contain two or more insulated circuit conductors
with or without one or more insulated or bare equipment-grounding
conductor(s). Each insulated circuit and grounding conductor is
rated for 600 volts. These cables do not contain any coaxial
members. These cables are rated for 150 volts and are so
Armored cables are covered by interlocked metal strip or a
smooth or corrugated metal sheath with or without a jacket over the
armor. Cables for encasement in concrete, mortar, other masonry,
plaster, or similar construction have metal armor and a jacket over
the armor. Cables for direct burial in the earth (see markings in
1.8) are subject to a 1000-pound crushing test. Cables for direct
burial are not required to be armored. Cables for direct burial
that are armored have a jacket over the armor. All other cables
(unarmored, flat or round) have an overall jacket.
Cables of materials that qualify for temperatures above 60°C
(140°F) are marked with a temperature rating. Temperature marking
is not required for cables that qualify for a temperature rating of
Cables that contain one or more electromagnetic shields (see 8.1
– 8.3 regarding constructions) are not required to be marked to
indicate the presence of the shielding. A shielded cable that is
marked has ²shielded² on the tag and either on the overall cable
jacket or legible through the jacket.
Cables that qualify for exposure to sunlight (720-hour
sunlight-resistance test – see 25.1) have ²sun res² or ²sunlight
resistant² on the tag and either on the overall cable jacket or
legible through the jacket.
Cables that qualify for burial directly in the earth (1000-pound
crushing test – see 29.1) have ²dir bur², ²direct burial², or ²for
direct burial² on the tag and either on the overall cable jacket or
legible through the jacket. Each insulated circuit and grounding
conductor in direct-burial cables is insulated for wet locations
(see 7.3.1 and 30.1 – 30.8).
A cable that contains one or more optical-fiber members has "OF
" supplementing the type letters and is marked in accordance with
These requirements do not cover cables that contain only optical
fibers. Optical-fiber cables without electrical conductors are
covered in the Standard for Optical Fiber Cable, UL 1651. 1.10
These requirements do not cover cables for electric-light, power,
control, Class 1, Class 2, or Class 3 circuits.
These requirements do not cover cables for power-limited
fire-alarm circuits (see UL 1424).
Smoke and flame tests are as follows for the cables covered in
a) PLENUM CABLES – All Type NPLFP cables are tested for smoke
and flame characteristics as specified in Smoke and Flame Testing
of Plenum Cables, Section 22, which references the National Fire
Protection Association Standard Method of Test for Flame Travel and
Smoke of Wires and Cables for Use in Air-Handling Spaces, ANSI/NFPA
262. A cable that complies exhibits a maximum flame-propagation
distance that is not greater than 5 ft, 0 inch or 152 cm, a peak
optical density of smoke produced of 0.50 or less (32 percent light
transmission), and an average optical density of smoke produced of
0.15 or less.
b) RISER CABLES – Jacketed Type NPLFR cables are tested for
flame-propagation characteristics as specified in Flame Testing of
Riser Cables, Section 23, which references the Standard Test for
Flame-Propagation Height of Electrical and Optical-Fiber Cables
Installed Vertically in Shafts, UL 1666. A cable that complies
exhibits a flame-propagation height under 12 ft, 0 inch or 366 cm
and attains a temperature no higher than 850.0°F (454.4°C) at a
height of 12 ft, 0 inch or 366 cm.
c) GENERAL-PURPOSE CABLES – Jacketed Type NPLF cables comply
with one of the two 70,000 Btu/h (20.5 kW) vertical-tray flame
tests specified in Alternative Vertical-Tray Flame Tests of
General-Purpose Cables, Section 24. The cable manufacturer chooses
one of the following tests:
1) The UL test referenced in 24.1.2 – 24.3.3. These paragraphs
apply the test method described as the UL Flame Exposure (smoke
measurements are not applicable) in the Standard for Vertical-Tray
Fire-Propagation and Smoke-Release Test for Electrical and
Optical-Fiber Cables, UL 1685.
2) The FT4/IEEE 1202 test referenced in 24.1.2 and 24.4.1. These
paragraphs apply the test method described as the FT4/IEEE 1202
Type of Flame Exposure (smoke measurements are not applicable) in
the Standard for Vertical-Tray Fire-Propagation and Smoke-Release
Test for Electrical and Optical-Fiber Cables, UL 1685. This test
differs from the UL test in loading (a greater number of cable
lengths are used, with small cables bundled, and the spacing
between cables or bundles is limited), burner angle, and failure
criterion. A cable that complies is eligible to be marked ²FT4/IEEE
1202² or ²FT4² on the surface
Order online or call: Americas: +1 800 854 7179 | Asia Pacific: +852 2368 5733 | Europe, Middle East, Africa: +44 1344 328039