If your RCD keeps tripping or the power won’t stay on, it’s time to check the health of your consumer unit. This Lewisham-based guide explains the likely causes and how an upgrade improves safety.
Why Does an RCD Trip?
Residual Current Devices (RCDs) detect imbalances between live and neutral conductors. When a small fault occurs — such as moisture in sockets or a damaged cable — the RCD disconnects the circuit instantly to prevent electric shock.
Typical Causes of RCD Tripping
- Old or damaged appliances (washing machines, dishwashers, garden tools).
- Moisture ingress in outdoor lighting or sockets.
- Neutral-to-earth faults within the wiring system.
- Outdated fuse boards without separate RCBO protection.
When to Upgrade Your Consumer Unit
Upgrading to a 2025-compliant RCBO board offers each circuit its own RCD protection, reducing nuisance trips and improving safety. Modern units also include surge and arc-fault protection options.
Areas We Cover
Lewisham (SE13), Catford (SE6), Hither Green (SE13), Brockley (SE4), and nearby South-East London districts.
FAQs – RCD Tripping in Lewisham
What should I do first when the RCD trips?
Unplug all appliances on that circuit, reset the RCD, and plug items in one at a time. If it trips again, call a qualified electrician.
Can RCDs go faulty?
Yes – mechanical parts wear with age. Testing every 6 months is recommended.
Will a new fuse board stop tripping?
It separates each circuit, reducing nuisance tripping and improving overall reliability.
Book a Fault Finding Visit in Lewisham
Persistent RCD trips? Arrange professional testing and, if needed, a consumer unit upgrade for a safer 2025 home.