Electrical Fault Finding London — NAPIT-Approved Diagnosis & Repair
Get expert electrical fault finding in London from SMR Group (Nova SMR Group), trusted by landlords, homeowners, and businesses across the capital. We diagnose tripping fuses, flickering lights, dead sockets and power faults using professional testing equipment, then fix the problem the same day — with a clear explanation of what caused it.
Electrical Fault Finding London — NAPIT-Approved Diagnosis & Repair
Get expert electrical fault finding in London from SMR Group (Nova SMR Group), trusted by landlords, homeowners, and businesses across the capital. We diagnose tripping fuses, flickering lights, dead sockets and power faults using professional testing equipment, then fix the problem the same day — with a clear explanation of what caused it.
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Why Choose SMR Group for Electrical Fault Finding London
From tripping fuse boxes and power outages to faulty sockets and flickering lights, our experienced electricians identify the root cause and provide lasting solutions.
NAPIT approved Electricians
Transparent Fixed Pricing
Advanced Circuit Tracing
24/7 emergency cover
+100 five-star Google reviews
Safe Testing to BS 7671
Public Liability Insurance
Advanced Circuit Tracing
Safe Testing to BS 7671
Transparent Fixed Pricing
NAPIT approved Electricians
Fully Insurance Cover
+100 five-star Google reviews
Emergency Electrical Faults
Transparent Electrical Fault Finding Pricing
Our electrical fault finding service in London starts at £80 for the first hour, including a thorough inspection, fault diagnosis, and professional electrical testing. If additional investigation or repair work is required, it is charged at £60 per hour, and you’ll always be informed before any extra work begins.
Electrical faults can vary from a simple loose connection to more complex issues such as earth faults, RCD tripping, intermittent power loss, or damaged wiring. Our experienced electricians use professional testing equipment to accurately locate the source of the problem, helping to avoid unnecessary repairs and minimise disruption.
Before carrying out any remedial work, we’ll explain our findings, discuss the recommended solution, and provide a clear quotation. No hidden charges—just honest pricing, expert fault finding, and safe, long-lasting repairs.
Common Electrical Faults We Find in London
Our experienced electricians diagnose and repair a wide range of electrical faults across London, from RCDs that keep tripping and dead short faults to circuit tracing, power loss, and faulty sockets. Explore some of the most common problems we solve and learn how our professional electrical fault finding service identifies the root cause quickly and safely.
RCD Keeps Tripping
A repeatedly tripping RCD often indicates earth leakage, faulty wiring or a defective appliance. We carry out comprehensive testing to identify the exact cause.
RCD Tripping Every Hour — Fridge Fault Found
Called out after a customer’s kitchen RCD kept tripping every hour. Insulation resistance testing on the ring final circuit showed a neutral-to-earth reading of 0.001 MΩ. After we disconnected the fridge, the reading rose to 9.8 MΩ. The fault was in the appliance, not the wiring, so no cable work was needed. Diagnosed in 30 minutes.
📍 Putney
Socket Not Working — Earth Fault Found
Called out after a customer reported sockets with no earth. We traced the fault to a disconnected CPC (earth wire) at the socket — and found the circuit had been wired with undersized 1.5mm² cable. Ran a new 2.5mm² cable and reconnected the earth correctly, restoring safe protection to the whole circuit.
📍 Kew
Electrical Fault Finding
When an electrical fault isn’t immediately obvious, we use specialist testing equipment to accurately locate the problem and carry out safe, long-lasting repairs.
📍 Richmond
Power Loss in One Room
Lost power to part of your property? We trace faults affecting sockets, lighting circuits and ring mains to restore your electrical supply safely.
📍 Richmond
Fuse Keeps Tripping
If your fuse or circuit breaker keeps tripping, there’s usually an underlying electrical fault. We diagnose the cause and repair it safely instead of simply resetting the breaker.
Hidden Electrical Faults
Need to locate hidden cables or identify a faulty circuit? Our circuit tracing service pinpoints damaged wiring and electrical faults with minimal disruption.
Trusted by Homeowners Across London
Read genuine feedback from local homeowners who trusted SMR Group to diagnose and repair electrical faults across London:
Verified Local Recommendations
“We just had Reza round to track down and repair a fault. He found 2 faults, fixed both, and took the time to explain in proper detail, including drawing a diagram.” — Alex Mole, Acton, London
“An experienced electrician with more than 10 years of expertise. Very organised and professional.” — Ayaa Dehghan, Nextdoor Community Member
Recent Fault Finding Projects in London
Watch real electrical fault finding projects across London, showing how we quickly diagnose and repair complex electrical faults.
Electrical Fault Finding London
Electrical fault finding in Richmond, London— no guesswork. Watch our NAPIT-approved electricians trace the exact cause of the problem and fix it the same day.
Circuit Tracing London
Circuit tracing in Chiswick, London. Before we call a fault fixed, we run a Zs test to confirm the circuit’s protection reacts safely — a step many quick fixes skip.
Fuse Keeps Tripping?
When a fuse keeps tripping or you’re left with a total power outage, the cause is often a dead short. Here’s how we traced one back to its source on a job in Richmond, London — fixed the same day.
Electrical Fault Finding London
Electrical fault finding in Richmond, London — no guesswork. Watch our NAPIT-approved electricians trace the exact cause of the problem and fix it the same day.
Circuit Tracing London
Circuit tracing in Chiswick, London. Before we call a fault fixed, we run a Zs test to confirm the circuit’s protection reacts safely — a step many quick fixes skip.
Fuse Keeps Tripping?
When a fuse keeps tripping or you’re left with a total power outage, the cause is often a dead short. Here’s how we traced one back to its source on a job in Richmond, London — fixed the same day.
RCD Tripping Every Second: A Bathroom Switch Fault in Acton
On a recent job in Acton, a customer’s RCD tripped every second after each reset. After around 30 minutes of testing, the fault was traced to the bathroom light switch line. A wireless switch and receiver was fitted at the light, where a permanent live was already present, and the RCD stayed on. Read the full case study: RCD trips immediately after reset: a bathroom switch fault in Acton.
Electrician's Tip:
One of the most common issues we find during electrical fault finding is exposed cable entries without the correct IP-rated protection. Even if everything appears to be working, moisture can enter over time and cause electrical faults, nuisance tripping or cable deterioration.
If you notice exposed wiring outside your property, it’s worth having it inspected before it becomes a more costly repair.
Electrician's Tip:
One of the most common issues we find during electrical fault finding is exposed cable entries without the correct IP-rated protection. Even if everything appears to be working, moisture can enter over time and cause electrical faults, nuisance tripping or cable deterioration.
If you notice exposed wiring outside your property, it’s worth having it inspected before it becomes a more costly repair.
Frequently Asked Questions – Electrical Fault Finding London
How much does electrical fault finding cost in London?
Our electrical fault finding service starts at £80 for the first hour, which includes professional fault diagnosis and electrical testing. If additional investigation or repairs are required, we will provide a clear quotation before any further work begins.
Why does my RCD keep tripping?
A tripping RCD is usually caused by earth leakage, a faulty appliance, or damaged wiring. Our electricians carry out comprehensive testing to find the exact cause rather than simply resetting it.
Why does my fuse keep tripping?
A fuse or breaker that keeps tripping almost always points to an underlying fault, not a random glitch. We diagnose the real cause and repair it properly, rather than offering a temporary fix.
Why have I lost power to one room but not the rest of the house?
This usually means a fault on a specific circuit — a socket, lighting ring, or ring main. We trace the affected circuit to find exactly where the problem lies.
What is circuit tracing and do I need it?
Circuit tracing locates hidden cables or pinpoints a faulty circuit without unnecessary disruption to your walls or property. It’s especially useful when a fault isn’t visible or obvious.
Do you offer same-day fault finding in London?
Yes. In most cases, we diagnose and repair the fault on the same visit, and explain what caused it before we leave.
Are you qualified to carry out electrical fault finding?
Yes — our NAPIT-approved, fully insured electricians use professional testing equipment to find faults safely and accurately.