As an expert in the field of electrical engineering and telecommunications, I'm often asked about various types of cables and their applications. One such type is the FPL cable, which stands for "Fire Protection Limited" cable. This type of cable is designed to maintain circuit integrity under fire conditions, making it a critical component in fire alarm and emergency communication systems.

### Introduction to FPL Cable

FPL cables are designed to operate in environments where a fire may occur. They are part of a broader category of cables known as "fire alarm cables" which are used to ensure that the alarm and communication systems continue to function during a fire, providing a vital lifeline for emergency services and building occupants.

### Key Features of FPL Cables


1. Fire Resistance: The primary characteristic of FPL cables is their ability to withstand high temperatures without losing their electrical conductivity. This allows them to continue operating even when exposed to fire.


2. Circuit Integrity: FPL cables are engineered to maintain circuit integrity for a specified period during a fire, which can be a critical factor in alerting people to evacuate and for emergency responders to access the building.


3. Physical and Electrical Properties: These cables have superior physical properties, such as increased durability and flexibility, and electrical properties, including low smoke emission and toxicity, making them safer to use in confined spaces.


4. Shielding Options: FPL cables can be found both shielded and unshielded. Shielded FPL cables provide additional protection against electromagnetic interference (EMI), which can be important in environments with a lot of electronic equipment.


5. Applications: They are widely used in commercial and residential buildings, particularly in fire alarm systems, emergency lighting, and communication systems that need to remain operational during a fire.

### NEC Type FPL Non-Plenum Alarm Cable

The NEC (National Electrical Code) sets standards for safe electrical design, installation, and inspection to protect people and property from electrical hazards. The NEC Type FPL Non-Plenum Alarm Cable is a specific type of FPL cable that adheres to these standards and is suitable for use in non-plenum spaces. Plenums are the areas in a building that separate the floor or ceiling of one floor from the floor or ceiling of the adjacent floor, and they have specific requirements for the types of cables that can be used to prevent the spread of fire and smoke.

### Stocking and Supply

Companies like Allied Wire and Cable stock a variety of FPL cables, ensuring that they are available for quick deployment in the construction and maintenance of fire safety systems. The availability of these cables from reputable suppliers is crucial for the timely installation and replacement of fire alarm systems.

### Conclusion

FPL cables play a vital role in the safety infrastructure of buildings. Their design ensures that even in the event of a fire, the critical systems for communication and alarm can continue to function, providing a critical window for evacuation and response. Understanding the features and applications of FPL cables is essential for anyone involved in electrical engineering, telecommunications, or fire safety.

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NEC Type FPL Non-Plenum Alarm Cable is stocked by Allied Wire and Cable. These cables are power limited general purpose cables with superior physical and electrical properties. Type FPL cables are available as both shielded fire alarm cable and unshielded fire alarm cable.read more >>