Quick answer
Outdoor electrical installations require RCD protection, weatherproof IP-rated accessories, and appropriate cable protection. Garden sockets, lighting, and outbuilding circuits all have specific requirements.
Any electrical installation outdoors — garden sockets, outdoor lights, shed circuits, hot tub wiring — must meet specific safety requirements. All outdoor sockets must have RCD protection and be in weatherproof enclosures rated at least IP44 for sheltered locations or IP66 for exposed areas. Cables running underground must either be armoured, enclosed in conduit, or buried at the correct depth with protective covers. Outdoor lighting must be IP-rated for its location. If you are having a hot tub, pond pump, or garden building wired, this work must be done by a qualified electrician and notified to building control under Part P. Never use extension leads or standard indoor sockets for outdoor use — it is a serious safety risk.
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