A tripping RCD or circuit breaker is a symptom, not the fault itself. It means the protective device has detected something wrong — an earth leakage, an overload or a short circuit — and has disconnected the supply to protect you.
We'll identify which device is tripping and why, isolate the circuit or appliance responsible, and repair it. If your consumer unit itself is old, damaged or unsuitable, we'll tell you honestly and explain the options, but we won't push a board replacement where a repair will do.
When to call us
- RCD trips and won't reset
- Breaker trips when a specific appliance is switched on
- Power lost to half the house (often one RCD in a split-load board)
- Tripping during heavy rain or cold, damp weather
- Old rewireable fuses that keep blowing
- Power loss after a storm or power surge
What's involved
- 1Identification of the tripping device and affected circuits
- 2Appliance isolation tests
- 3Insulation resistance testing to find earth leakage
- 4Repair of the faulty circuit, accessory or connection
- 5Check of the consumer unit condition and protective devices
- 6Restoration of power and re-test
Good to know
Quick checks you can do
Switch off and unplug appliances on the affected circuit, then try resetting the breaker or RCD once. If it holds, plug items back in one by one to see which one causes the trip. If it trips with everything unplugged, the fault is likely in the fixed wiring — leave it off and call us.
Neighbours affected too?
If the whole street is without power, it's a network fault. Call 105 to report it to your local network operator.
How much does it cost to fix a tripping fuse box?
Every job is different, so we price it once we understand what's needed. The main factors are:
- Whether the trip is caused by an appliance or the fixed wiring
- Number of circuits on the affected RCD
- Access to outdoor, loft or under-floor wiring
- Condition of the consumer unit and protective devices
We explain charges before we attend and agree the price of any work with you before it starts. Sending photos in advance helps us quote more accurately.
Power Loss & Tripping Circuits: FAQs
Why does my RCD keep tripping?
The most common causes are a faulty appliance, moisture in an outdoor or bathroom fitting, a damaged cable, or a build-up of small earth leakage across many appliances on one RCD. Testing identifies which.
Is it dangerous if my breaker keeps tripping?
The breaker is protecting you, but the underlying fault can be dangerous. Don't keep resetting it or bypass it — get the circuit tested.
Do I need a new consumer unit?
Not necessarily. Many tripping problems are caused by a fault on one circuit. A new consumer unit is only recommended if the existing one is damaged, lacks suitable RCD protection, or is otherwise unsafe or unsuitable.
Power Loss & Tripping Circuits — areas covered
Available across Surrey, Reigate, Crawley & Mid Sussex, South West London, Richmond, Twickenham & Staines, Sutton & Morden, South East London, Bromley, Croydon & North Surrey, Berkshire, West Kent, Sussex.
- Brighton
- Hove
- Portslade
- Shoreham-by-Sea
- Worthing
- Lewes
- Kingston upon Thames
- Surbiton
- Epsom
- Leatherhead
- Esher
- Walton-on-Thames
- Weybridge
- Guildford
- Woking
- Farnham
- Camberley
- Godalming
- Wimbledon
- Putney
- Wandsworth
- Clapham
- Dulwich
- Crystal Palace
- Lewisham
- Greenwich
- Croydon
- Purley
- Coulsdon
- Reading
- Bracknell
- Tunbridge Wells
- Tonbridge
- Sevenoaks
- Redhill
- Reigate
- Horley
- Crawley
- Horsham
- Dorking
- East Grinstead
- Haywards Heath
- Burgess Hill
- Richmond
- Twickenham
- Teddington
- Hounslow
- Feltham
- Staines-upon-Thames
- Sunbury-on-Thames
- Egham
- Sutton
- Carshalton
- Wallington
- Morden
- Bromley
- Beckenham
- Orpington
- Chislehurst
- Eastbourne
- Hastings
- Bexhill-on-Sea