Types of Cables & Sizes in Fire Alarm System Selecting the right cable is a critical step in designing a Fire Alarm System.

 Types of Cables & Sizes in Fire Alarm System Selecting the right cable is a critical step in designing a Fire Alarm System. The cable not only carries signals but also ensures the system remains operational even during fire emergencies.

Here are the commonly used cables with their typical sizes:

Fire Resistant (FR) Cable - 1.0, 1.5, 2.5 mm² (detectors, MCPs, loops)

FRLS (Flame Retardant Low Smoke) Cable - 1.5 & 2.5 mm² (general wiring)

MICC (Mineral Insulated Copper Cable) - 1.0, 1.5, 2.5 mm² (critical circuits)

Shielded Twisted Pair (STP) Cable 0.8-1.5 mm² (communication lines)

Power Cables (FR/FRLS type) - 2.5, 4, 6 mm² (power to panels & devices)

Summary:

Detectors & MCPS 1.0-1.5 mm²

Sounders & Modules 1.5-2.5 mm²

Main Power 2.5-6 mm²

Critical Installations MICC cables

Choosing the right cable ensures safety, reliability, and compliance with fire safety standards.

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