Kitchen Appliance Isolation

The 'Why'

Kitchen appliances trip the RCD or behave oddly because of internal faults, damaged cables, or faulty plugs. Never pull a plug from a sparking or smoking appliance - use the isolation switch or consumer unit. Cookers and hobs use high currents; their switches and wiring must only be worked on by a qualified electrician.

The 5-Minute Fix

• Plugged appliances (fridge, dishwasher, washing machine): Switch off at the socket and unplug. Don't touch the plug if the socket or cable is warm, scorched, or buzzing - isolate the circuit at the consumer unit first, then unplug when safe.
• Switched appliances (cooker, hob, oven): Use the cooker control switch (red switch above worktop or next to cooker). Switch to OFF. Don't open the switch or touch wiring.
• If the RCD keeps tripping: Leave the faulty appliance isolated. Don't keep resetting and trying again - fire risk. Note which circuit tripped and call an electrician.

When it's more than a simple reset

Once isolated, the fault needs professional diagnosis. Likely causes include:

• Faulty appliance - internal short, damaged element, or motor; appliance repair or replacement.
• Damaged cable or plug - scorched contacts, loose connections.
• Cooker circuit fault - switch, wiring, or overload; qualified electrician required.

For cooker circuit faults, switch replacement, or new appliance points, see our Fault Finding service.