Tripping Issues
RCD Keeps Tripping? 24/7 Emergency Electrician Coton, Radstock
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About this service
Tripping Issues in Coton
In simple terms
If your power keeps tripping, a safety device is cutting power because it has detected a fault, overload, or unsafe condition. Repeated tripping means the cause still needs to be found.
What to do now
- Note which switch has tripped and what was running at the time.
- Do not keep forcing the power back on if it trips again immediately.
- Call urgently if the tripping affects sockets, water, heating, or essential appliances.
Useful terms
- RCD
- A safety switch that cuts power when it detects a fault to help prevent electric shock.
- MCB
- A breaker that turns a circuit off when it is overloaded or shorted.
- BS 7671
- The main UK wiring standard electricians use to judge whether an installation is safe.
Service Details
Why Does My RCD Keep Tripping?
RCDs (Residual Current Devices) are life-saving protective devices that detect earth faults and disconnect power within milliseconds. When your RCD keeps tripping, it indicates an electrical fault that requires professional diagnosis to identify and resolve safely.
Common Causes of RCD Tripping
Faulty Appliances: Damaged appliances with internal insulation faults are the most common cause of RCD tripping. The fault allows current to leak to earth, triggering the RCD.
Moisture Ingress: Water in sockets, junction boxes, or outdoor circuits creates earth fault paths that trip RCDs. This is common after heavy rain or in damp environments.
Damaged Wiring: Cables with compromised insulation from age, rodent damage, or physical impact can cause intermittent or persistent RCD tripping.
Overloaded Circuits: While MCBs typically handle overloads, severe overloading can cause heating that leads to insulation breakdown and earth faults.
Nuisance Tripping: Some RCDs trip due to cumulative small leakage currents from multiple appliances, even when no single fault exists.
MCB vs RCD Tripping
MCB (Miniature Circuit Breaker): Trips due to overload or short circuit. Reset by switching back on after identifying and resolving the overload.
RCD (Residual Current Device): Trips due to earth faults where current leaks to ground. Requires fault diagnosis before safe reset.
How to Identify the Faulty Circuit
Our electricians systematically test each circuit to isolate the fault. This involves disconnecting circuits individually and testing insulation resistance to pinpoint the problematic circuit or appliance.
Professional Diagnosis and Repair
Never ignore repeated RCD tripping - it indicates a genuine electrical fault that could be dangerous. Our qualified electricians use professional test equipment to diagnose faults accurately and carry out lasting repairs that restore safe operation of your electrical system.