BS 5467 (Steel Wire Armoured)-A Comprehensive Blog
BS 5467 (Steel Wire Armoured): Complete Guide | Features, Uses & Specs
When it comes to industrial-grade power distribution, durability, safety, and compliance with international standards are essential. BS 5467 (Steel Wire Armoured) cables are engineered precisely for these demands — offering robust mechanical protection, reliable power delivery, and versatile installation options for outdoor and indoor applications. In this comprehensive guide, we’ll explore everything you need to know about BS 5467 armoured cables — from construction and performance to applications and compliance.
What Is BS 5467 Steel Wire Armoured Cable?
BS 5467 is a British Standard specification for armoured power cables, specifically steel wire armoured (SWA) multi-core cables. These cables are designed for low voltage power distribution and are widely used in industrial, commercial, and outdoor environments where tough mechanical protection is required. (Cable supplier)
The standard defines the materials, construction, electrical characteristics, and performance requirements for armoured cables rated up to 600/1000V (in most implementations), making them suitable for use in fixed installations, underground wiring, cable ducts, and direct burial applications. (farnell.com)
Key Features of BS 5467 Armoured Cable
1. Robust Construction
BS 5467 cables feature a layered design that significantly enhances strength and longevity:
- Conductors: Stranded copper conductors (Class 2) according to BS EN 60228. (farnell.com)
- Insulation: XLPE (Cross-Linked Polyethylene) insulation for high temperature and thermal performance. (farnell.com)
- Bedding: PVC bedding layer to support and cushion the armour. (Cable supplier)
- Armour: Steel Wire Armour (SWA) provides excellent resistance against impact, crushing, and mechanical stresses. (Cable supplier)
- Outer Sheath: Durable PVC outer jacket for moisture and environmental protection. (farnell.com)
This construction makes BS 5467 cables weather-resistant, rugged, and suitable for harsh environments. (Cable supplier)
Technical Specifications
Understanding the technical specs helps engineers and buyers match the right cable to the job.
Voltage Rating:
✔️ Standard BS 5467 armoured cables are rated at 0.6/1kV (600/1000V) for low voltage power distribution. (farnell.com)
Temperature Range:
✔️ Operating temperatures typically range from -15°C to +90°C. (Cable supplier)
Test Voltage:
✔️ Some datasheets specify an AC test voltage of 3.5 kV for insulation testing. (Cable supplier)
Minimum Bending Radius:
✔️ Around 6× the overall diameter for most cores; varies with size and configuration. (Cable supplier)
Core Identification & Color Coding
Core identification is essential for installation and maintenance. BS 5467 cables follow a standard color code:
- Single Core: Brown or Blue
- Two Core: Brown & Blue
- Three Core: Brown, Black & Grey
- Four Core: Brown, Black, Grey & Blue
- Five Core: Brown, Black, Grey, Blue & Green/Yellow
- Seven or More Cores: White cores with printed numbers (Ruitian Cable Co., Ltd)
Advantages of BS 5467 SWA Cables
🔹 Exceptional Mechanical Protection
The steel wire armour acts like an armor plate, safeguarding conductors from crushing forces, impact, and rough handling — ideal for installations beneath floors, inside industrial plants, or buried underground. (Cable supplier)
🔹 Suitable for Harsh Environments
Thanks to its UV-resistant PVC sheath and moisture-resistant layering, BS 5467 cables handle outdoor exposure, damp locations, and fluctuating temperatures with ease. (farnell.com)
🔹 Thermal Endurance
XLPE insulation sustains continuous operation at elevated temperatures, reducing the risk of overheating in high-load circuits. (Cable supplier)
🔹 Versatile Installation
These cables can be laid directly in the ground, in cable ducts, on cable trays, or clipped to surfaces. Their sturdy design also suits high-traffic and industrial zones where cables may be exposed to mechanical wear. (arnoldcable.com)
Common Applications
BS 5467 SWA cables are extremely versatile and used across sectors:
1. Industrial Power Distribution
Used extensively in factories, manufacturing plants, and heavy-duty facilities where power cables must withstand mechanical stress and rough conditions.
2. Underground & Outdoor Wiring
Ideal for underground installations, direct burial, and outdoor power distribution due to their moisture and impact resistance.
3. Construction & Infrastructure
Suitable for powering lighting, heavy machinery, and auxiliary systems in commercial buildings, construction sites, and infrastructure projects.
4. Control Systems
Multi-core versions serve not just power circuits but also control and instrumentation cables in industrial automation setups.
BS 5467 vs. Other Armoured Cable Standards
Compared to other armoured standards, BS 5467 stands out in several ways:
⭐ Mechanical Strength
The steel wire armour offers stronger mechanical protection than steel tape armoured (STA) cables, making it a preferred choice for underground or high-risk installations. (vwcable.com)
⭐ Thermal & Electrical Performance
XLPE insulation offers higher thermal limits compared to traditional PVC-only cables, supporting higher continuous loads with improved reliability. (mkcable.com)
⭐ Standard Compliance
BS 5467 ensures compliance with British and IEC standards, making it acceptable in many international markets where certified electrical wiring is mandatory. (farnell.com)
Installation & Safety Tips
To maximize performance and safety:
✔ Follow local electrical codes and regulations when installing BS 5467 cables.
✔ Always use appropriate glands and terminations designed for SWA cables to maintain waterproofing and mechanical integrity.
✔ Ensure proper earthing/grounding — the steel armour often doubles as earth continuity where permitted by code.
✔ During installation, maintain minimum bending radii as recommended by the manufacturer.
✔ Consult a qualified electrician or electrical engineer if unsure about cable selection or installation requirements.
Summary: Why Choose BS 5467 Armoured Cables?
BS 5467 (Steel Wire Armoured) cables are engineered to deliver robust performance, mechanical resilience, and electrical reliability — making them a go-to solution for demanding power distribution applications in industrial, commercial, residential, and outdoor environments. Whether you’re wiring an industrial plant, installing underground mains, or setting up control systems, BS 5467 SWA cables offer peace of mind with certified safety and enduring performance.
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