Outdoor & Weatherproof Socket Installation in Merton

About outdoor & weatherproof socket installation in Merton

An outdoor socket gives you a convenient, safe power supply for garden tools, pressure washers, outdoor entertainment, festive lighting, and anything else you need power for outside. Installation involves fitting an IP66-rated weatherproof socket on an external wall, running a dedicated circuit from the consumer unit with 30mA RCD protection, and ensuring the full installation complies with BS 7671 Section 714 for outdoor electrical work. Most installations are completed in half a day.

Installing an outdoor socket is notifiable work under Part P of the Building Regulations because it involves a new circuit in a special location. It must be carried out by a qualified electrician registered with a competent person scheme. Running an extension lead from an indoor socket through a window or door is dangerous — the cable is not rated for outdoor use, the socket has no weatherproofing, and there is no dedicated RCD protection. An extension lead outdoors is the single most common cause of electric shock in domestic gardens.

What's included

• Pre-installation survey and positioning advice
• IP66-rated weatherproof external socket
• Dedicated radial circuit from consumer unit
• 20A RCBO protection (combined MCB + 30mA RCD)
• All cable, conduit, glands, and fixings
• Core drilling through external wall and sealing
• Full circuit testing to BS 7671 standards
• Electrical Installation Certificate (EIC)
• Part P Building Control notification

Typical cost

Outdoor & Weatherproof Socket Installation in Merton typically costs £120–£300 per socket. Every job is different — describe what you need and a qualified electrician will quote you directly.

See full pricing breakdown →

Regulations & standards

• Part P of the Building Regulations (Approved Document P): A new outdoor socket circuit is notifiable work. It must be installed by an electrician registered with a competent person scheme, or inspected and certified by Building Control.
• BS 7671:2018+A2:2022 (IET Wiring Regulations), Section 714: Section 714 covers outdoor installations, requiring IP-rated enclosures, RCD protection, cable protection against mechanical damage, and specific earthing arrangements.
• BS EN 60529 — IP Rating Standard: Defines the Ingress Protection ratings for electrical enclosures. Outdoor sockets must be rated at least IP66 (protected against powerful water jets and total dust ingress) when the cover is closed.