Why is my socket arcing inside the wall – Advice from Electriman, North London Electricians

## What Does Arcing Inside a Socket Mean?

If you have seen a flash of light, heard a crackling or buzzing sound, or noticed a burning smell coming from behind your socket faceplate, your socket is **arcing internally**. This means electrical current is jumping across a gap rather than flowing safely through a complete circuit — similar to a tiny lightning bolt happening inside your wall.

**This is a serious electrical fault and a potential fire hazard. Stop using the socket immediately.**

### Most Common Causes

- **Loose terminal screws** — the most frequent cause; wires work loose over time due to thermal expansion and contraction

- **Damaged or frayed cable insulation** — the plastic sleeve protecting the wire has worn away, allowing current to jump

- **Overloaded socket** — drawing more current than the wiring can safely handle causes heat and eventual arcing

- **Old or worn socket** — sockets degrade over years of use, and internal contacts can corrode or weaken

- **Water ingress** — moisture behind the socket can cause tracking and arcing between terminals

- **Poor original installation** — cables not properly stripped or clamped at the time of fitting

### What You Can Safely Do Right Now

- **Switch off the circuit** at your consumer unit (fuse box) — look for the circuit breaker labelled 'sockets' or 'ring main'

- If you are unsure which circuit it is, switch off the **main switch** entirely

- **Do not remove the f

Need a qualified electrician in North London?

Electriman covers Mill Hill, Barnet, Finchley, Edgware, Enfield, Watford and surrounding areas. All work is Part P certified and fully insured.