Why does the downstairs trip but the upstairs is fine?

Separate circuits serve upstairs and downstairs in most UK homes. The downstairs circuit handles heavier loads from kitchen and living room appliances, making it more prone to overload.

Could running the washing machine and dishwasher together cause it?

If they are on the same ring circuit, possibly. These are both high-draw appliances. Combined with a kettle or toaster, you could be close to the circuit's capacity. An electrician can check and recommend a solution.

Is it worth getting a separate kitchen circuit?

If your kitchen has many high-draw appliances on the main ring circuit, a dedicated kitchen circuit or splitting the ring can solve overload issues. This is a common and worthwhile upgrade.

How do I check behind the fridge or washing machine?

If you can safely pull the appliance out, check for water around the socket, signs of heat damage on the plug or socket, and ensure the flex is not kinked or trapped. If the appliance is hard to access, an electrician can help.

Caution

Updated 30 August 2026

Downstairs Circuit Keeps Tripping

The circuit supplying power downstairs keeps tripping, leaving the ground floor without electricity.

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What's happening?

When the downstairs circuit keeps tripping, the fault is in the ground floor wiring or in an appliance used downstairs. Downstairs circuits typically carry heavier loads because they include the kitchen, utility room, and living room, where most high-draw appliances are located.

What usually causes it?

Faulty kitchen appliance such as a dishwasher, washing machine, or kettle
Overloaded ring circuit from multiple high-draw appliances running simultaneously
Water ingress into a socket behind a kitchen appliance
Faulty outdoor socket or garden equipment connected to the downstairs circuit
Damaged cable under the ground floor, especially in properties with suspended floors
Extension lead or multi-plug adapter that is overloaded or faulty

Is it dangerous?

Downstairs circuits carry heavy loads, so overload faults are common. The combination of kitchen water sources and high-draw appliances makes the downstairs particularly prone to faults. An overloaded circuit can cause cables to overheat.

Can I fix it myself?

Check which MCB has tripped. Unplug all appliances downstairs, including those behind kitchen units (dishwasher, washing machine, tumble dryer). Reset the MCB. If it holds, plug items back one at a time, starting with the lowest-draw items. Pay attention to any appliance that causes the trip when plugged in, even before switching it on.

When should you call an electrician?

Call an electrician if the circuit trips with nothing plugged in, if you have trouble accessing appliances behind kitchen units, if the fault started after recent building work, or if you cannot narrow down the cause. Also call if the downstairs ring circuit has never been tested — older properties often have wiring issues hidden behind fitted kitchens.