A breaker trip is a symptom, not a diagnosis
A circuit breaker switching off repeatedly can be associated with an overloaded circuit or a fault in wiring or equipment. The switch label and the pattern of power loss help an electrician decide what to investigate, but do not prove the cause remotely. Do not remove covers, touch damaged fittings or bypass a protective device.
Breaker, RCD or whole-property power loss?
- One breaker trips: note which sockets, lights or equipment stop working and what was in use.
- An RCD trips: several circuits may lose power together. Our RCD tripping guide explains why the fault may remain even with appliances unplugged.
- No electricity anywhere: this may be a property fault or a network outage. Read about whole-property and partial power loss before assuming the consumer unit needs replacing.
Do not approach the board to read labels if there is smoke, heat, water or visible damage. Move away from immediate danger and call emergency services if necessary.
What happens at the first visit?
Describe the symptoms, give your postcode and agree attendance. The electrician assesses the affected installation and explains the investigation required. Depending on the findings, making the fault safe may mean leaving a circuit or item disconnected. Permanent repair is a separate decision, with the scope and price agreed before that work starts.
Access to concealed wiring, replacement parts or an intermittent fault may require further investigation or a return visit. Restoring every circuit on the first visit is not guaranteed.
What will it cost?
The call-out is £50 plus VAT (£60 total). Remaining work is quoted before starting, rather than charged at a published fixed hourly or day rate. Ask what investigation is proposed before agreeing it. See our call-out and quotation guide.
Electrical fault finding is the next step when trips keep returning. Send the fault details, including what was in use and any recent water leak or building work.
Your questions answered
Can a single appliance cause a breaker to trip?
It can, but the appliance is not the only possible cause. Note any pattern you have already observed and leave damaged equipment unused. Testing is needed to distinguish equipment faults from circuit faults.
Does a repeated trip mean I need a new consumer unit?
Not necessarily. Replacing the board will not by itself repair faulty wiring or equipment. An electrician should establish what is causing the trips before proposing replacement.
Can I keep resetting the breaker?
Do not repeatedly reset a device that trips again. Keep clear of damaged or wet electrical equipment and arrange professional investigation.