Circuits keep tripping? Our NAPIT approved electricians diagnose and fix tripping RCDs, MCBs and fuse boards quickly across Cardiff, Newport, Swansea and all of South Wales.
A tripping circuit breaker is one of the most common electrical problems in UK homes. While it’s a safety feature designed to protect you, frequent or unexplained tripping indicates an underlying fault that needs professional investigation.
Common causes include faulty appliances, overloaded circuits, moisture in wiring, deteriorated insulation, and earth leakage faults. At Megalec Electrical Solutions, we use systematic testing to identify exactly what’s causing your circuits to trip and fix it permanently.
We serve homes and businesses across Cardiff, Newport, Swansea, Bridgend, Caerphilly and surrounding areas. Don’t keep resetting your trip switch – let us find and fix the cause.
Understanding and resolving tripping issues
RCDs trip when they detect earth leakage current. We test each circuit individually to isolate which one has the fault and identify the cause.
MCBs trip due to overload or short circuit. We check circuit loading, test for short circuits, and resolve the issue.
Often a faulty appliance causes tripping. We systematically test to identify if an appliance is the culprit before investigating wiring.
Water ingress into wiring or junction boxes is a common cause of RCD tripping. We locate moisture problems and make safe.
Aged or damaged cable insulation can cause earth leakage. We test insulation resistance and replace deteriorated sections.
We don’t just reset your trip switch. We find and fix the root cause so the problem doesn’t keep coming back.
Systematic diagnosis for lasting results
Tell us which switch trips, how often, and when it happens. This helps us plan our investigation efficiently.
We systematically disconnect circuits to identify which one is causing the trip, then test that circuit thoroughly.
Using insulation resistance testing and visual inspection, we pinpoint the exact fault – whether it’s wiring, an appliance, or moisture.
We fix the fault and retest the entire circuit to confirm the tripping has been resolved permanently.
Tell us which switch trips, how often, and when it happens. This helps us plan our investigation efficiently.
We systematically disconnect circuits to identify which one is causing the trip, then test that circuit thoroughly.
Using insulation resistance testing and visual inspection, we pinpoint the exact fault – whether it’s wiring, an appliance, or moisture.
We fix the fault and retest the entire circuit to confirm the tripping has been resolved permanently.
Tripping circuits are a symptom, not the problem. Many people waste money replacing consumer units when the actual fault is elsewhere. Our diagnostic approach finds the real cause first, saving you unnecessary expense and ensuring a permanent fix.
Available throughout Cardiff, Newport, Swansea, Bridgend & surrounding areas
RCDs trip when they detect current leaking to earth. Common causes include faulty appliances, moisture in wiring, damaged cable insulation, or a fault on an outdoor circuit. We test systematically to find the exact cause.
The tripping itself is a safety feature protecting you. However, the underlying fault causing the trip could be dangerous – it may indicate damaged wiring, water ingress, or an appliance fault that could cause a fire or electric shock.
Diagnosis and simple repairs typically cost £100-£200. If the fault requires more extensive work like replacing a section of wiring, costs may be £200-£400+. We always quote before proceeding with repairs.
No – replacing the RCD won’t fix the underlying fault. The RCD is doing its job by detecting a genuine earth leakage. Replacing it with a less sensitive one would be dangerous. The fault itself needs to be found and repaired.
Intermittent tripping often relates to appliances that only run at certain times (washing machine, dishwasher, heating), moisture that varies with weather, or thermal faults that only occur when circuits are under load.
You can reset it once to see if it holds. If it trips again immediately or repeatedly, stop resetting it and call an electrician. Repeatedly resetting a tripping circuit can be dangerous if there’s a serious fault.
Stop the frustration. Contact Megalec today and we’ll find and fix the cause of your tripping circuits.