UL 1425 Cables for Non-Power-Limited Fire-Alarm Circuits

standard by Underwriters Laboratories, 01/01/1998

Full Description

This Standard states the construction, test, and marking requirements covering the safety of electrical and electrical/optical-fiber cables intended for 150-volt andlower-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 Article760 and other applicable parts of the National Electrical Code (NEC), NFPA 70. These cables are not power-limited so 760-30(b)(1) of NFPA 70-1996 statesthat these cables are not to be exposed where installed in environmental-air-transport ducts or plenums. These cables typically are red in color. Electricallynonconductive material separates each optical-fiber member from the rest of the cable. The order in which the NEC accepts these cables as substitutes for oneanother is shown in (d).
1.PLENUM CABLES - Type NPLFP (electrical) and Type NPLFP-OF (electrical/optical-fiber). These cables are for exposed installation in other [NEC 300-22(c)] environmental-air-transport space.
2.RISER CABLES - Type NPLFR (electrical) and Type NPLFR-OF (electrical/optical-fiber). These cables are for installation in vertical runs in a shaft or for installation in vertical runs that penetrate more than one floor.
3.GENERAL-PURPOSE CABLES - Type NPLF (electrical) and Type NPLF-OF (electrical/optical-fiber). These cables are for general-purpose fire-alarm use in buildings. General purpose does not include use as plenum or riser cable.
4.HIERARCHY:
1.Type NPLFP qualifies for use as Type NPLFR or NPLF.
2.Type NPLFP-OF qualifies for use as Type NPLFR-OF or NPLF-OF.
3.Type NPLFR qualifies for use as Type NPLF.
4.Type NPLFR-OF qualifies for use as Type NPLF-OF.

Product Details

Edition: 1st Published: 01/01/1998 Number of Pages: 80