Guide
6 min read
A powered shed opens up so many possibilities - workshop, office, or just somewhere to charge the lawnmower. But running electricity outdoors isn't as simple as extending a cable from the house. Get it wrong and you're looking at serious safety issues. Here's what you need to know.
The Why: What's Actually Going On
Outdoor cable must withstand moisture, UV, and physical damage. SWA (steel wire armoured) cable is the standard: the steel armour protects the conductors and provides an earth path. It must be buried at the correct depth (often 450-600mm) or run in conduit. The circuit needs RCD protection (30mA) and usually a separate earth rod or bonding depending on the setup. This is Part P notifiable work - you must use a registered electrician. DIY runs can fail EICR and invalidate insurance.
Roy's Pro Tip
Plan the route before you dig. Avoid areas where you might dig later (vegetable beds, tree roots). Use ducting for the buried section so you can pull a new cable in future without re-digging.
Safety Warning
Never use standard PVC cable outdoors or in conduit above ground for a permanent supply. Never connect a shed to the house with an extension lead. Always use a qualified electrician for outdoor circuits.
Recommended Products
For certified installations and professional advice across Margate, Ramsgate, and Broadstairs, contact Thanet Electrical for a free quote.
Shed or Garden Power in Thanet?
Our qualified electricians serve Margate, Ramsgate, Broadstairs and across the Isle of Thanet.
Professional Safety Checklist
- Isolate power at the consumer unit before any electrical work
- Use a voltage tester to confirm circuits are dead
- Ensure all work complies with BS 7671 (IET Wiring Regulations)
- Keep a record of any modifications for future reference
- When in doubt, consult a qualified electrician