What are the different types of fire alarm cables?
The two categories of fire alarm cable are riser cables and plenum cables. When a plenum cable is used in enclosed air spaces, it’s known as FPLP. Non-plenum cables used in wiring applications are called FPL, and cables used for vertical applications are termed FPLR.
What is a riser cable?
This refers to cables that are run vertically through the floors of a multiple story building.
What is a plenum cable?
This refers to cables used in applications where the cable must be run in return air space, the space typically above the drop ceilings, or the kind you find under raised floors. Plenum-rated cables are much more expensive than non-rated ones.
What are the different uses of fire alarm cables?
FPL power-limited fire alarm cable works best for general fire alarm use.
FPLR power-limited fire alarm riser cable is ideal for vertical runs in a shaft or when it goes from floor to floor. With fire-resistant properties, these cables keep fire from spreading from one floor to another.
FPLP power-limited fire alarm plenum cable. The NEC recognizes this cable type as a fitting option for ducts, plenums, and other spaces designed to use environmental air.
What is a power limited and non-power limited cable?
The main difference between the two is the degree of NEC compliance. Non-power limited cables are compliant with NEC sections 760-21 and 760-23, while power limited cables are compliant with NEC sections 760-41. You’ll need to keep that in mind when you shop around for a fire alarm cable.
How to choose the right fire alarm cable?
You’ll need to decide if you want to go for a plenum or non-plenum cable. This would entirely depend on your purpose for getting the cable in the first place. Browse through sites like EWCS to get a solid idea on what your options are.