classification using the suffix "-CI." Cables that are part
of a listed electrical circuit protective system shall be
considered to meet the requirements of survivability.
FPN No. 1: Fire alarm circuit integrity (CI) cable and electrical circuit protective systems may be used for fire alarm circuits to comply with the survivability requirements of NFPA 72®-2007, National Fire Alarm Code®, 6.9.4.3 and 6.9.4.6, that the circuit maintain its electrical function during fire conditions for a defined period of time.
FPN No. 2: One method of defining circuit integrity (CI) cable is by establishing a minimum 2-hour fire resistance rating for the cable when tested in accordance with UL 2196-1995, Standard for Tests of Fire Resistive Cables.

(G) NPLFA Cable Markings. Multiconductor non- power-limited fire alarm cables shall be marked in accor dance with Table 760.176(G). Non-power-limited fire alarm circuit cables shall be permitted to be marked with a maximum usage voltage rating of 150 volts. Cables that are listed for circuit integrity shall be identified with the suffix "CI" as defined in 760.176(F).

FPN: Cable types are listed in descending order of fire resistance rating.

760.179 Listing and Marking of PLFA Cables and In- sulated Continuous Line-Type Fire Detectors. Type FPL cables installed as wiring within buildings shall be listed as

Table 760.176(G) NPLFA Cable Markings
Cable
Marking Type Reference
NPLFP Non-power-limited fire 760.176(C) and alarm circuit cable for (G) use in "other space used
for environmental air"
NPLFR Non-power-limited fire 760.176(D) and alarm circuit riser cable (G)
NPLF Non-power-limited fire 760.176(E) and alarm circuit cable (G)
Note: Cables identified in 760.176(C), (D), and (E) and meeting the requirements for circuit integrity shall have the additional classification using the suffix "CI" (for example, NPLFP-CI, NPLFR- CI, and NPLF-CI).
being resistant to the spread of fire and other criteria in accordance with 760.179(A) through (H) and shall be marked in accordance with 760.179(1). Insulated continuous line-type fire detectors shall be listed in accordance with 760.179(J). Cable used in a wet location shall be listed for use in wet locations or have a moisture-impervious metal sheath.

(A) Conductor Materials. Conductors shall be solid or stranded copper.

(B) Conductor Size. The size of conductors in a multiconductor cable shall not be smaller than 26 AWG. Single conductors shall not be smaller than 18 AWG.

(C) Ratings. The cable shall have a voltage rating of not less than 300 volts.

(D) Type FPLP. Type FPLP power-limited fire alarm ple- num cable shall be listed as being suitable for use in ducts, plenums, and other space used for environmental air and shall also be listed as having adequate fire-resistant and low smoke-producing characteristics.

FPN: One method of defining low smoke-producing cable is by establishing an acceptable value of the smoke produced when tested in accordance with NFPA
262-2007, Standard Method of Test for Flame Travel

and Smoke of Wires and Cables for Use in Air-Handling

Spaces, to a maximum peak optical density of 0.5 and a

maximum average optical density of 0.15. Similarly, one method of defining fire-resistant cables is by establishing a maximum allowable flame travel distance