5 Warning Signs Your Home's Wiring Needs Attention

Electrical faults are a leading cause of house fires in the UK. Unlike a leaking pipe or a crack in the wall, electrical problems are often invisible — hidden inside walls and ceilings — which makes knowing the warning signs all the more important.

~20,000

UK house fires per year caused by electrical faults

50%

Of electrical fires involve wiring or distribution equipment

30%

Of UK homes have electrical installations over 25 years old

The 5 Warning Signs

Frequently Tripping Circuit Breakers

High

A circuit breaker that trips occasionally is doing its job. But if a breaker trips repeatedly — especially on the same circuit — it's a strong sign that the circuit is being overloaded, or that there's a fault in the wiring or in one of the appliances on that circuit. Do not simply reset the breaker and ignore it. Persistent tripping warrants an investigation by a qualified electrician.

Flickering or Dimming Lights

High

Lights that flicker when an appliance turns on may indicate that the circuit is undersized for the load. However, lights that flicker randomly — or across multiple circuits — can be a sign of a loose connection somewhere in the installation. Loose connections create arcing, which generates heat and is one of the leading causes of electrical fires.

Burning Smell or Discolouration Around Sockets

Urgent

A burning smell — particularly one that resembles burning plastic — or brown/black marks around plug sockets or light switches is a serious warning sign that should not be ignored. This indicates that arcing or overheating is occurring behind the face plate. Stop using the affected outlet immediately and contact a qualified electrician.

Buzzing or Crackling Sounds

High

Electrical installations should be silent. Any buzzing, crackling, or humming sounds from sockets, switches, or the consumer unit are abnormal and typically indicate a loose connection, a failing component, or wiring that is deteriorating. These sounds are often accompanied by a faint burning smell.

Old Wiring (Pre-1970s Installation)

Medium

If your home was built before the 1970s and hasn't had its wiring updated, there's a strong chance it still contains rubber-insulated cables, which degrade over time and can become brittle and dangerous. Other signs of outdated wiring include round-pin sockets, bakelite switches, or a fuse box with rewireable fuses rather than modern circuit breakers. An EICR will assess the condition of older wiring and tell you what needs to be done.

What NOT to Do

Do not ignore the warning signs and hope they go away — electrical faults rarely resolve themselves

Do not attempt DIY repairs to fixed wiring — this is dangerous and illegal without the correct qualifications

Do not overload sockets with extension leads and multi-adapters

Do not use appliances that are giving electric shocks or feel unusually warm

A Note for Swindon and Wiltshire Homeowners

A significant proportion of Swindon's housing stock was built during the 1960s, 70s, and 80s — and much of it has never had its electrical installation fully updated. If you live in areas such as Penhill, Park North, Walcot, or Freshbrook, there's a real chance your home still has wiring that predates modern standards. The same applies to older properties across Wiltshire in towns like Chippenham and Devizes. This doesn't mean your home is dangerous right now — but it does mean a professional inspection is strongly advisable. Our team carries out electrical inspections across Swindon and Wiltshire and can give you a clear, honest assessment of your installation's condition.

When to Call an Electrician

If you notice any of the warning signs listed above, contact a qualified electrician promptly. For signs 2 and 3 (burning smells, discolouration), you should treat this as urgent and stop using the affected outlets immediately.

If you haven't had an Electrical Installation Condition Report (EICR) in the last 10 years — or ever — booking one is the best way to get a full picture of your installation's safety. Our NICEIC-approved engineers can often identify issues before they become emergencies.

Concerned About Your Wiring?

Don't wait for a fault to become a fire. Our team of NICEIC-approved electricians serve Swindon, Chippenham, Cirencester, and surrounding areas — get in touch today for a fast response.