Electrical safety has become a critical requirement in modern infrastructure, especially in buildings where fire risk and human occupancy are high. To address this need, BS 6724:2016 was developed as a British Standard that defines the requirements for thermosetting insulated, armoured electric cables designed for fixed installations with low smoke and corrosive gas emission under fire conditions.
This guide explains BS 6724:2016 in clear, practical terms—what it is, where it is used, why it matters, and how proper testing ensures compliance.
Understanding BS 6724:2016
BS 6724:2016 is a British Standard that specifies construction, performance, and testing requirements for armoured power cables with rated voltages of:
- 600/1000 V
- 1900/3300 V
These cables are intended for fixed installations where fire safety, low smoke emission, and reduced corrosive gas release are essential.
Unlike older PVC-insulated cables, BS 6724 cables use thermosetting insulation, which provides better thermal stability and fire performance.
Key Features of BS 6724 Armoured Cables
BS 6724 cables are designed to perform reliably in demanding environments. Some of their most important features include:
1. Thermosetting Insulation
The insulation material does not melt when exposed to high temperatures. This property improves circuit integrity and reduces flame spread during fire incidents.
2. Armoured Construction
The cable includes a metallic armour layer, usually steel wire armour (SWA), which:
- Provides mechanical protection
- Allows safe underground or exposed installation
- Enhances durability in industrial environments
3. Low Smoke and Corrosive Gas Emission
When exposed to fire, these cables:
- Emit very low smoke
- Release minimal corrosive gases
- Improve visibility and evacuation safety
This feature makes them suitable for public buildings and enclosed spaces.
Where Are BS 6724 Cables Commonly Used?
BS 6724 thermosetting insulated armoured cables are widely used in areas where safety and reliability are non-negotiable:
- Hospitals and healthcare facilities
- Airports and metro stations
- Commercial complexes
- Data centers
- Industrial plants
- High-rise residential buildings
In such locations, cable failure during fire can cause serious hazards. BS 6724 cables help reduce that risk.
BS 6724 vs Traditional Armoured Cables
Many engineers ask why BS 6724 cables are preferred over conventional PVC armoured cables.
| Aspect | BS 6724 Cables | Traditional PVC Cables |
|---|---|---|
| Insulation type | Thermosetting | Thermoplastic |
| Smoke emission | Low | High |
| Corrosive gases | Minimal | Significant |
| Fire performance | Superior | Limited |
| Application | Fire-safe installations | General use |
The difference becomes critical in fire-sensitive environments.
Importance of BS 6724 Cable Testing
Compliance with BS 6724:2016 is not based on design alone. Laboratory testing confirms whether a cable meets the standard’s requirements.
Testing verifies:
- Electrical performance
- Mechanical strength
- Insulation integrity
- Fire behavior
- Smoke and gas emission limits
Manufacturers, importers, and project owners rely on certified test reports before approving cables for use.
Common Tests Performed as per BS 6724:2016
A qualified BS 6724 cable testing laboratory conducts multiple evaluations, including:
- Conductor resistance test
- Insulation resistance test
- High voltage test
- Armour resistance and continuity test
- Smoke density test
- Acid gas emission test
- Flame propagation test
Each test ensures the cable performs safely under both normal and emergency conditions.
Choosing the Right BS 6724 Testing Lab
Selecting a competent laboratory is just as important as selecting the cable itself. A reliable lab ensures accurate results and compliance confidence.
If you are searching for a BS 6724 cable testing laboratory in Noida, look for a facility that offers:
- NABL-accredited testing procedures
- Experienced technical staff
- Modern testing equipment
- Clear and traceable test reports
A professional BS 6724 armoured cable testing lab helps manufacturers avoid costly rejections and project delays.
BS 6724 Cable Testing in Noida: Why Local Labs Matter
Working with a BS 6724 cable testing lab in Noida offers several practical advantages:
- Faster testing turnaround
- Easier sample submission
- Direct technical discussions
- Reduced logistics cost
Many manufacturers and contractors prefer a BS 6724 testing lab in Noida because of the region’s strong industrial and infrastructure ecosystem.
Compliance Benefits for Manufacturers and Contractors
Testing cables at a recognized BS 6724 cable testing laboratory provides long-term benefits:
- Improves product credibility
- Supports tender and project approvals
- Ensures safety compliance
- Reduces liability risks
- Builds trust with consultants and clients
Compliance is not only a technical requirement—it is also a business advantage.
Final Thoughts
BS 6724:2016 plays a vital role in modern electrical safety standards. Thermosetting insulated armoured cables covered under this specification offer superior fire performance, reduced smoke emission, and improved reliability for fixed installations.
However, the true value of BS 6724 cables comes from proper laboratory testing. Partnering with a competent BS 6724 cable testing laboratory in Noida ensures that cables meet every requirement of the standard before they reach the site.
