Common signs include flickering or dimming lights, burning smells from outlets or switches, buzzing sounds from outlets, frequently tripping circuit breakers or blown fuses, hot or discoloured outlets/switches, and minor electric shocks.

Some minor electrical work, like replacing an existing socket or light fitting with a like-for-like replacement, is generally permitted. However, “notifiable work” (such as installing new circuits, replacing a consumer unit, or any work in a bathroom or outdoors) must comply with Part P of the Building Regulations and should be carried out by a registered electrician or notified to local authority Building Control.

All outdoor electrical work must be carried out by a competent contractor and comply with current wiring regulations (BS 7671) and Part P of Building Regulations. Outdoor sockets and appliances must be suitably waterproof and RCD protected. Buried cables need to be at a sufficient depth to avoid damage.

An RCD (Residual Current Device) is a life-saving safety device that automatically switches off the electricity if it detects a fault, such as current flowing down an unintended path (e.g., through a person). They protect against electric shock and reduce the risk of electrical fires. Modern consumer units typically have RCD protection on most circuits.