NPLFR designates non power-limited fire protective signaling circuit riser cable, rated for non power-limited fire alarm circuits in vertical riser runs between floors.
NPLFR designates non power-limited fire protective signaling circuit riser cable, combining the non power-limited fire alarm classification with a riser rating. Riser-rated cable is built to limit the spread of flame from floor to floor, suited to the vertical pathways that run between the floors of a building. This is a higher level of fire performance than general use but below the strictest plenum requirements.
Because vertical riser shafts can act as channels for fire to travel between floors, fire alarm cable installed in them must resist propagating flame along its length. The NPLFR designation identifies cable that meets both the non power-limited fire signaling requirements and the riser fire performance needed for between-floor runs.
In commercial and industrial buildings, fire protective signaling cable in riser pathways connects alarm and detection systems across floors while meeting fire-spread requirements. Selecting the correctly designated cable for both the circuit type and the location is part of building a compliant fire safety system.
At Windy City Wire, the focus on low-voltage cable includes riser-rated fire signaling types such as NPLFR. Supplying cable carrying the appropriate designations helps commercial facilities apply the correct product for fire alarm circuits in between-floor riser runs.
NPLFR (Non Power-Limited Fire protective signaling circuit Riser cable)
NEC (National Electrical Code), which defines riser fire signaling cable requirements