Frequent power cuts or an RCD that won’t reset is more than an inconvenience — it’s a safety signal. This Woolwich guide explains likely causes and next steps.
Why RCDs Trip
Residual Current Devices disconnect power when they detect an imbalance, protecting against electric shock. Repeated trips indicate a fault in an appliance, cable, or circuit.
Common Causes in SE18 Homes
- Damp garden sockets, outdoor lighting or pond pumps.
- Ageing appliances (kettle, washer, oven) leaking to earth.
- Neutral-to-earth faults from damaged insulation.
- Shared RCDs covering multiple circuits on older boards.
Safe First Steps
- Unplug portable appliances on the affected circuit.
- Try resetting once. If it trips again, leave it off.
- Avoid using suspect outdoor circuits until tested.
Professional Fault Finding
Engineers use insulation resistance, continuity and RCD tests to isolate the fault. Upgrading to RCBOs gives each circuit its own protection, reducing whole-house trips.
Areas We Cover
Woolwich (SE18), Plumstead, Thamesmead, Charlton, Abbey Wood, and nearby SE postcodes.
FAQs – RCD Tripping in Woolwich
Why does it trip at night?
Timers, outside lighting, and fridge/freezer defrost cycles often trigger nighttime trips.
Can an RCD itself be faulty?
Yes — older devices can wear mechanically and should be tested regularly.
Will a new board solve it?
RCBO boards isolate circuits, reducing nuisance trips and improving safety.
Book Fault Diagnosis in Woolwich
Restore power safely with professional testing and clear remedial options for your SE18 property.