Flame-Retardant vs. Fire-Resistant Cables: Which One Does Your Project Need?

A single oversight in cable selection cost a commercial contractor $620,000 in fire-related damages last year. With building safety regulations tightening globally, choosing between flame-retardant (FRLS) and fire-resistant (FR) cables isn’t just technical—it’s about life safety. Let’s break down the critical differences and help you make a compliant decision.

1. Core Functionality:

Fire-Resistant Cables Primary Role: 

Maintain electrical integrity during active fires (typically 90–180 minutes).

Key Features:

Mica-based insulation 

FRLS compound sheath 

Tested to IEC 60331, BS 6387 (Category C/W/Z)

Best For: Emergency lighting systems Fire alarm circuits Critical hospital equipment

Flame-Retardant Cables Primary Role: 

Slow flame spread and reduce toxic smoke emission.

Key Features: Low-smoke zero-halogen (LSZH) materials Self-extinguishing compounds

Complies with IEC 60332, UL 1685

Best For: Office building power distribution Retail space lighting HVAC systems

The Lifesaving Difference: FR cables keep systems running during a fire. FRLS cables prevent fires from spreading after ignition.

2. Compliance Checklist: Avoid Costly Legal Traps

When Fire-Resistant is Non-Negotiable:

High-rise buildings (30+ floors)

Underground transportation tunnels

Nuclear/power plant control systems

Local regulation examples: NFPA 72 (US), EN 50575 (EU), GB 31247 (China)

Where Flame-Retardant Suffices:

Low-risk commercial offices

Temporary construction site wiring

Non-critical retail environments

3. Why Smart Contractors Use a Hybrid Approach

Step 1: Partner with engineers to map fire containment zones in blueprints.

Step 2: Deploy FR cables in high-risk areas (e.g., emergency exits, control rooms).

Step 3: Use FRLS cables for general circuits to optimize budgets.

4. HUANGHE CABLE’S Advantages: Safety Meets Value

Safety Standards:

FR/FRLS cables comply with relevant IEC safety standards.

Trusted Manufacturer & Reliable Partner:

As a leading global cable manufacturer, Huanghe Cable combines cutting-edge technology with decades of expertise to deliver high-performance cables and reliable service. Whether you’re a distributor, trader or contractor, we are your reliable partner for all your power transmission needs.

Want to know more about FR Cable please click here.