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3 x 1.5mm SWA Armoured Cable
3 x 1.5mm SWA Armoured Cable is commonly used for power and auxiliary control cables in power networks, suitable for underground, outdoor, and indoor applications, including cable ducting. It features blue, brown, and earth core colors, with a diameter of 12.6mm and a polyvinyl chloride cover in black. Rated for 600⁄100 volts and can handle temperatures up to 70 degrees Celsius.
Product Information
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Product Features
Applications & Uses
Underground Installation
Perfect for direct burial applications where mechanical protection is essential. The steel wire armour protects against spade damage and ground settlement.
Outdoor Applications
Excellent for external installations including garden lighting, outbuildings, and perimeter security systems where weather resistance is crucial.
Industrial Environments
Suitable for workshops, factories, and commercial premises where cables may be exposed to mechanical stress or harsh conditions.
Cable Ducting
Can be installed in cable ducts and trunking systems for additional protection in high-traffic areas.
Installation Guidelines
Minimum Bending Radius
Maintain a minimum bending radius of 6 times the cable diameter (approximately 76mm) to prevent damage to conductors and armour.
Earthing Requirements
The steel wire armour must be earthed at both ends using appropriate SWA glands to ensure electrical safety and comply with BS7671 (18th Edition Wiring Regulations).
Termination
Use appropriate SWA cable glands rated for the cable diameter. Ensure proper IP rating for the installation environment.
Current Carrying Capacity
| Installation Method | Current Rating (Amps) |
|---|---|
| Direct Buried (70cm depth) | 20A |
| In Air (Touching) | 17A |
| In Air (Spaced) | 20A |
| In Conduit/Trunking | 15A |
Standards & Compliance
- BS5467 Specification for cables with thermosetting insulation
- BS EN 60332-1-2 Fire performance testing
- BS7671 Requirements for Electrical Installations (18th Edition)
- CE Marked Complies with European standards
- BASEC Approved Third-party tested and certified
Frequently Asked Questions
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Why is this the best SWA cable for garden office installations?
Our 3 core 1.5mm² SWA cable is perfect for garden offices because it handles typical lighting and socket loads (up to 20A), provides mechanical protection against spade damage during gardening, and the 1.5mm² size keeps installation costs down while meeting Part P regulations.
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What features of this cable make it ideal for outdoor installations?
Our cable uses high-grade copper conductors and superior PVC compounds that won't crack in cold weather. The steel wire armour is galvanized for extra corrosion resistance. BS5467 certification ensures quality that cheaper imports can't match.
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When should I choose 1.5mm² over 2.5mm² for underground runs?
Choose 1.5mm² when your total load is under 20A and cable run is under 30 meters for lighting circuits or low-power applications. This saves 30-40% on cable costs compared to 2.5mm² while still providing adequate capacity. Perfect for shed electrification, security lighting, or garden pump circuits.