This group of Copper based cables is based on UL 1424 standard, whose requirements cover 60 - 250°C (140 - 482°F) single- and multiple-conductor cables for use as fixed wiring within buildings (some are also marked for direct burial) principally for power-limited fire-alarm circuits as described in Article 760 and other applicable parts of the National Electrical Code (NEC).

Cables covered by these requirements are:
  • Type FPLP (plenum cable).
  • Type FPLR (riser cable).
  • Type FPL (cable for other than plenum or riser uses in general and in trays), and "Power-limited fire-alarm circuit cable" (cable for limited use).
 
Cables for Power-Limited Fire-Alarm Circuits
 
  Type FPL Cables  
Type FPL (cable for other than plenum or  riser uses in general and in trays), and "Power-limited fire-alarm circuit cable" (cable for limited use).
 
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