It is a dark evening, you are making dinner, and suddenly—click. The power goes out.
If your fuse box (now called a consumer unit) keeps tripping, it can be very frustrating. However, remember that your consumer unit is actually doing its job. It trips to protect your home and family in Bromley from electrical fires and shocks.
So, why does it keep happening, and how can you fix it? Here are the 5 most common causes we see when helping homeowners in the local area.
- Overloaded Circuits
This is the most common issue. Every electrical circuit has a limit on how much power it can handle. If you plug too many high-power items into one socket—like a kettle, a toaster, and a microwave all running on an extension lead—the circuit gets too hot.
The fuse box trips to stop the wires from melting.
- A Faulty Appliance
Sometimes the wiring in your house is fine, but an item you plugged into it is broken. Old irons, faulty fridges, washing machines, or even cheap phone chargers frequently cause a fuse box to trip.
- Short Circuits
A short circuit happens when a live wire touches a neutral wire. This causes a sudden, dangerous spike in electrical current. This usually happens because of loose connections inside a socket, damaged wires behind a wall, or even pests chewing through cables.
- Water and Moisture
Water and electricity do not mix. If you have outdoor garden lights, rainwater can easily leak into the fittings and trip your whole house. Inside the home, a leaking pipe dripping onto a kitchen spotlight or steam building up in a bathroom extractor fan can cause the exact same issue.
- An Outdated Fuse Box
If you still have an old-fashioned fuse box with re-wirable fuses, or a consumer unit that is over 15 to 20 years old, it may simply be failing. Old switches weaken over time. They can trip even when there is no real fault with your appliances.
How to Find the Fault: The Quick Checklist
Before you call a local engineer, you can try this simple test to see if a faulty appliance is causing the problem:
- Unplug everything on the circuit that has tripped (turn off all appliances and pull the plugs completely out of the wall)
- Go to your consumer unit and flip the switch back up.
- Plug your appliances back in one by one and turn them on.
When the power trips again, you have successfully found the broken appliance!
Need a Reliable Electrician in Bromley?
If your fuse box trips when absolutely nothing is plugged in, you likely have a hidden wiring fault or a failing consumer unit that needs expert attention.
Do not risk your safety dealing with live electrical wires. At Keswick Electrical Services Ltd, we are fully NAPIT-registered professionals.
We provide fast, safe, and tidy electrical fault finding across Bromley, Beckenham, Chislehurst, Orpington, and Petts Wood.
👉 Contact Keswick Electrical Services Ltd today to book a safe inspection, or call Calum on 07534 669513 for fast, reliable local service.
