Fault Finding & Emergency Electrician in Sheffield
Something has tripped, gone dead, or started smelling hot, and you need somebody who can find out why rather than guess. Fault finding is diagnosis first: test, isolate, prove the cause, then fix it — and tell you what it was in plain English.
What's included
- Attendance within an agreed window, with a call when I set off
- Systematic testing to isolate the fault to a circuit and a point
- Making safe immediately, before anything else
- Minor repairs completed on the first visit where possible
- A fixed price for anything larger, agreed before it starts
- Minor Works Certificate for the repair
- A plain explanation of what failed and why
Practical details
How long does it take?
Most faults are found within the first hour. Intermittent ones can take longer, and I'll tell you when we reach that point.
Will the power go off?
Circuit by circuit during testing. If something has to stay isolated overnight, it's labelled and you'll know exactly what's off.
What happens afterwards?
A certificate for the repair, and honest advice on whether the underlying installation needs more work or is fine as it is.
Diagnosis, not parts-swapping
The expensive way to fix an electrical fault is to replace things until it stops happening. It occasionally works, it always costs more than it should, and it teaches you nothing about whether the fault is really gone.
The alternative is measurement. A tripping RCD is a good example. The device itself is rarely the problem — it is doing exactly what it was designed to do, reporting current leaking to earth somewhere on the circuits it protects. Every circuit has some leakage; a 30mA RCD trips when the total crosses roughly half its rating. So the job is to measure leakage circuit by circuit with a clamp meter, find which one is contributing most, then split that circuit down until the leakage sits in one leg. Nine times out of ten it ends at an appliance, an outdoor socket that has taken water, or a cable someone has put a screw through.
Dead circuits are the same discipline in reverse: prove the supply, prove continuity, find where it stops. Intermittent faults are the hard ones, because they are usually thermal — a loose terminal that only breaks contact once it has warmed up under load. Those get found by looking for heat damage and by tightening and testing every accessory on the circuit, not by waiting for it to happen while the meter is on.
What counts as an emergency
Call, don’t fill in a form, for any of these: a burning or fishy smell from a socket, switch or the board; scorch marks or discolouration around an accessory; a board that will not stay on at all; water reaching electrics; or a shock, however mild, from an appliance or a tap.
Things that can generally wait until tomorrow: one dead socket in a room that has others; a light fitting that has stopped working; a circuit that trips only when one specific appliance is plugged in — unplug it and it can wait.
If you’re unsure which list you’re on, ring and describe it. That call is free and it takes two minutes.
What you’ll be told
Before I set off: the callout rate, and an honest arrival window rather than a comforting one. When I arrive: what I’m testing and why. When the fault is found: what failed, what it will cost to put right, and whether it points at something larger in the installation that you should plan for.
If the answer is “this is a five-minute fix and the rest of your wiring is fine”, that is what you’ll hear. Fault finding is the job that earns the next one, and it doesn’t survive being used as a sales visit.
Fault finding questions
My RCD keeps tripping. What's causing it?
Almost always earth leakage on one circuit — a failing appliance, water in an outdoor socket, or a damaged cable. Splitting the board and measuring leakage per circuit finds it. Replacing the RCD does not.
There's a burning smell. What should I do now?
Turn off at the consumer unit if you can do so safely, don't use the circuit, and call. Burning smells are the one thing not to wait on.
Do you charge if you can't find it?
The callout covers the attendance and testing either way. If a fault is genuinely intermittent I'll say what I've ruled out and what it would take to catch it, rather than replacing parts on a hunch.