UL 1424 Listed Fire Alarm Cable 14 AWG 2-Core
UL 1424 Certification: English Description
1. Certification Overview
UL 1424 is a safety standard developed by Underwriters Laboratories (UL) specifically for Power-Limited Fire-Alarm Circuit Cables
. It ensures cables meet strict fire safety requirements for use in fire alarm systems and emergency communication networks within commercial and industrial buildings
.
2. Scope & Application
- Primary Use: Cables certified under UL 1424 are designed for fixed installations in buildings to transmit signals in power-limited fire-alarm circuits .
- Applicable Systems: Fire detection systems, emergency evacuation alarms, and other life-safety circuits requiring controlled power levels .
3. Technical Specifications
- Conductor Material: Bare copper conductors (14 AWG or other standardized gauges) ensure reliable signal transmission
.
- Insulation & Jacketing: Typically uses flame-retardant materials (e.g., PVC, LSZH) to comply with low smoke and halogen-free requirements .
- Voltage Rating: Operates at ≤ 300V, suitable for low-energy circuits to minimize fire hazards
.
4. Key Safety Features
- Fire Resistance: Passes vertical flame tests to prevent fire propagation .
- Low Smoke Emission: Reduces toxic gas release during combustion .
- Compliance: Meets NEC (National Electrical Code) requirements for fire-rated cables in North America .
5. Testing & Certification Process
- Performance Tests: Includes flame spread, smoke density, and circuit integrity tests under simulated fire conditions
.
- Certification Mark: Products bearing the UL Listed mark confirm compliance with UL 1424 standards .
6. Typical Applications
- Commercial buildings (e.g., offices, hospitals) .
- Industrial facilities requiring fire-alarm systems with controlled power output .
7. Additional Notes
- Global Recognition: While UL 1424 is primarily for North American markets, its safety benchmarks align with international fire safety norms 36.
- Supplier Compliance: Manufacturers must adhere to UL's follow-up inspection program to maintain certification validity
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