Fault finding is the work I get called for most. A fuse board that trips the second the shower goes on, half a flat with no power, a socket that smells hot, lights that flicker in one room only. Resetting the trip and hoping is tempting. It usually just delays the problem, and sometimes it hides something genuinely dangerous.
I find the real cause with calibrated test gear rather than guesswork, working circuit by circuit until the fault shows itself. London flats make this harder than most, because cables get buried during conversions and circuits often cross between rooms in ways that make no sense on paper. After 20 years I read the signs quickly. Anything dangerous is made safe straight away, then you get a clear price to fix it before I go any further.
Any hour, genuinely
I run 24/7, so a dead flat at midnight gets answered rather than booked in for next week.
Tested, not guessed
Insulation resistance, earth loop and RCD testing narrow the fault down to the exact circuit, fitting or cable rather than swapping parts and hoping.
Made safe first
Anything dangerous is isolated and made safe on the first visit, before we talk about what the repair costs.
Your questions, answered
How much does fault finding cost in London?
Most visits land between £90 and £180 for the first hour, depending on how quickly the fault shows itself. Night and weekend call-outs sit at the higher end, and I confirm the price before starting.
My fuse box trips when I use the shower, why?
Usually a failing shower element leaking to earth, though a damaged cable or a shared RCD carrying too many circuits can do it too. Testing tells us which, rather than guessing.
There is a burning smell from a socket, what should I do?
Switch it off at the board, stop using it and call me. A hot smell from a socket means heat is being generated somewhere it should not be, and that needs looking at the same day.
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