Best Practices for Selecting Fire Rated Cleats

Fire rated cleats securely support power cable cleats during fires, maintaining circuit integrity for emergency systems. Select cleats tested to IEC 61914, BS 5839, and EN 50200 standards, matching cable diameter, short-circuit ratings (up to 120kA+), and environment for optimal safety and compliance.

Why Fire Rated Cleats Matter

Fire Rated Cleats prevent cable sagging, short circuits, and failures in high-risk areas like hospitals, data centers, and tunnels. They withstand temperatures over 1000°C, ensuring power to alarms, lighting, and evacuation systems. Proper selection reduces risks and meets BS 5839 requirements for non-combustible supports.

How Cable Cleats Help Maintain Circuit Integrity

Power cable cleats restrain cables against electromagnetic forces during short circuits and fires. They keep cables fixed as insulation softens, preventing collapse and flame spread while preserving electrical continuity for critical circuits.

• Maintain support at high temperatures (e.g., 30+ minutes).

• Reduce movement that causes shorts or damage.

• Comply with circuit integrity standards like BS 5839 and EN 50200.

• Enable safe evacuation and firefighting operations.

Read this also...How Cable Cleats Help Maintain Circuit Integrity

How to Choose the Right Power Cable Cleats

Follow these steps for reliable selection:

1. Assess Cable Specifications: Match outer diameter and formation (single, trefoil).

2. Evaluate Short-Circuit Rating: Choose based on kA levels (e.g., stainless steel for >76kA).

3. Check Fire Resistance: Verify testing to BS 5839, EN 50200, or equivalent; prefer 316L stainless steel or LSZH materials.

4. Consider Environment: Use corrosion/UV-resistant options for outdoors or harsh conditions.

5. Review Standards: Ensure IEC 61914 compliance for load, impact, and flame tests.

6. Spacing and Load: Follow manufacturer guidelines (typically 0.3–0.9m).

Read this also...How to Choose the Right Power Cable Cleats

Material Comparison Table:

Material	Fire Rating	Best For	Key Benefit
316L Stainless Steel	Up to 1000°C+	Corrosive/Outdoor	High strength, durability
LSZH/Polymer	V0 Flame Retardant	Indoor, confined spaces	Low smoke, lightweight
Composite	Moderate	General use	Cost-effective

Additional Best Practices

• Use certified fixings for fire-rated installations.

• Calculate spacing with tools like cleat selectors or IEC guidelines.

• Inspect for proper torque (e.g., 12-18 Nm) and alignment.

• Avoid mixing materials that cause galvanic corrosion.

Expert Insight: BS 5839 mandates supports that match cable fire performance to avoid reduced circuit integrity.

Conclusion and Key Takeaways

Selecting the right Fire Rated Cleats and power cable cleats ensures safety, compliance, and reliability. Prioritize standards, material match, and proper spacing.

Key Takeaways:

• Match cleats to cable size, fault levels, and fire standards.

• Use tested fire-rated options for critical circuits.

• Follow IEC 61914 for proven performance.

CTA: Consult certified suppliers for your project needs and upgrade installations today for enhanced fire safety.

FAQs

What are Fire Rated Cleats?

Special supports that hold cables during fires, maintaining circuit integrity at high temperatures.

Why use power cable cleats in fire-rated systems?

They restrain cables against short-circuit forces and prevent collapse, preserving emergency power.

What standards apply to fire rated cable cleats?

IEC 61914, BS 5839, EN 50200, and BS 8434.

How do I choose the right size power cable cleats?

Match cable diameter, short-circuit kA rating, and installation environment.

Can polymer cleats be fire rated?

Yes, LSZH or V0-rated polymers offer low-smoke fire resistance for suitable applications.

What spacing for fire rated cleats?

Typically 300–900mm, adjusted for cable size and fault levels per IEC guidelines.

Are stainless steel cleats best for outdoors?

Yes, 316L stainless provides superior corrosion and fire resistance.