Table of contents
Why Steel Wire Armoured Cable Matters
SWA Cable Protection Against Rodents is one of the main reasons electricians rely on armoured cable for outdoor and underground work. Steel wire armoured (SWA) cable offers long service life and resilience in gardens, lofts, and buried runs, helping prevent damage while ensuring compliance with BS 7671.
Real‑World Case: Rodents vs SWA
On a recent job, rodents chewed the outer PVC sheath on a cable run. They stopped the moment they met the steel wire armouring. Without SWA, they could have reached live conductors — leading to faults or fire. This is why SWA is strongly recommended wherever cables are exposed outdoors, in lofts, or in spaces with rodent activity.
Applications of SWA Cable
- Outdoor lighting and garden power
- Garage, shed and outbuilding supplies
- Underground runs to summerhouses, EV chargers and workshops
- Loft areas where insulation and pests create hidden risks
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Compliance with BS Standards
SWA cables are manufactured to British Standards such as BS 5467 (PVC) and BS 6724 (LSZH). Installation must follow the IET Wiring Regulations (BS 7671), including:
- Regulation 522.8.10 – mechanical protection for buried cables
- Appendix 4 – current‑carrying capacities and correction factors
- Section 526 – joints and terminations with correctly sized SWA glands
Accessories for Proper Installation
FAQs – SWA Cable Protection Against Rodents
Can rodents chew through SWA?
Rodents may damage the outer PVC sheath, but the steel armour prevents further penetration to live conductors.
Should I use SWA indoors?
Not always required, but in lofts or roof spaces with insulation and pests, SWA provides useful mechanical protection.
How deep should SWA be buried?
Common guidance is 450–600 mm in domestic ground, with sand bedding and marker tape above, following BS 7671 practice.
Why Buy SWA Cables from Electrical4Less
We stock armoured cables from trusted UK manufacturers. See the Doncaster Cables Website or the UK Cables Website for more about their products. For next-day delivery, browse our full range of Armoured Cables.
Why Steel Wire Armoured Cable Protects Against Rodents