Electrical Repairs and Fault Finding North London

Our North London pricing is fixed and itemised:

• £100 callout / first hour fault finding — fully inclusive. Covers travel, full diagnostic testing, insulation resistance test, RCD test, circuit isolation, and tracing the fault to its source
• If we can fix the fault during that first hour — included, no extra
• Repairs needing more time or parts — quoted upfront before we proceed
• For landlords — we invoice direct, attach the diagnostic report for your records, and reference EICR codes where relevant

What changes the price: nothing during the diagnostic visit. We don’t charge separately for ‘investigation’ then ‘labour’ — the £75/hour-plus pattern you’ll see elsewhere. One trip, one price for the diagnosis.

Most common causes of a tripping RCD, MCB, or fuse (the breakers / trip switches in your consumer unit / fuse box):

• Faulty appliance — ~70% of nuisance trips. Kettle, fridge, washing machine
• Outdoor sockets and garden lights are the close second, especially in winter — water ingress, perished gaskets, and damp connections after a wet week are the classic seasonal trip-cause
• Earth fault / leakage to earth — water in a socket, damaged cable, bridged neutral-earth
• Overloaded circuit — too much on one ring, common in old kitchens
• Failing RCD itself — the safety switch wears out after 10–15 years

DIY first check (safe): unplug everything on the affected circuit, reset the breaker, then plug appliances back one by one. If it trips when you plug a specific item — appliance fault.

If it trips with nothing plugged in, the fault is in the wiring. That’s where our diagnostic visit comes in — insulation resistance testing isolates the fault down to the affected cable run, usually within the first hour.

EICR remedials are our most common landlord call:

• C1 (immediate danger) — we isolate the same day, repair within 24–48 hours. Exposed live conductor, fire risk
• C2 (potentially dangerous) — most common fail code. Examples: no RCD on bathroom circuit, missing earth bond, broken socket, dodgy wiring in junction boxes. Typical repair: 2–6 hours, single visit
• C3 (improvement recommended) — not a fail; advisory. Optional alongside C2 work
• FI (further investigation) — we open up and test the flagged section

For landlords: we issue a re-test certificate after remedials so you can re-issue the EICR pass before the 28-day legal deadline.

For owner-occupiers selling: if the buyer’s solicitor flagged the EICR, we usually clear all C2s in a single day so your sale isn’t held up.

Bring us the EICR report — we quote against the actual codes, not a guess.

Classic partial-circuit failure. Most likely causes:

• Loose connection — a wire backed out of a socket terminal (common after DIY, kitchen extensions, pulled appliances)
• Broken ring main — the circuit’s ring is broken at one socket, cutting power to that section. Common upstairs after loft conversions
• MCB tripped silently — low-current shorts can flicker MCBs off without you noticing
• Spur off a spur — DIY-added sockets that weren’t wired correctly fail under load

Lights stopped but sockets fine (or vice versa) — they’re on separate circuits. Lighting has its own MCB; sockets are a ring main. Different fault paths.

Diagnosis: we test continuity at each socket on the affected circuit, find the break, repair it. Almost always findable within the £100 first-hour call. Most common job we do for both owner-occupiers and landlords.

Yes — treat it as an emergency. A burning plastic / electrical fire smell from a socket, switch, or fuse box means a connection is overheating. Untreated, it can start a fire.

Do this now:

1. Switch off the affected circuit at the consumer unit
2. If you can’t tell which trip switch, switch off the main switch at the top of the fuse box
3. Unplug everything from the affected room
4. Don’t touch any socket or switch that feels warm
5. Call us — same-day callout in North London for confirmed burning-smell jobs

For landlords with tenants in: we coordinate access urgently. Tell the tenant to isolate the circuit and stay out of the affected area until we arrive.

We don’t charge a higher rate for confirmed same-day burning-smell calls — same £100 callout. Source typically isolated and made safe within the first hour.

Depends on the pattern:

• One bulb flickering — usually the bulb itself or its socket. Cheap fix, replace and test
• All lights in one room flickering — loose connection in a switch or junction box on that circuit. Worth getting checked, can develop into burning/arcing
• All lights house-wide dimming when an appliance kicks in (kettle, washing machine, EV charger) — main supply or main fuse degradation. Important — call us
• Lights pulsing or strobing — failing LED driver or a neutral fault. Stop using the circuit

Most worrying pattern: house-wide dimming + flickering + occasional burning smell — that’s a degraded main service cable or fuse box terminal. Can escalate. We test the incoming supply, the main fuse, and the meter tails.

For landlords: if your tenant reports flickering, take it seriously. It’s one of the top three pre-fire warning signs.

Yes — landlord-tenant access is part of our normal week:

• You give us the tenant’s contact details + a one-line description of the fault
• We coordinate the visit time directly with the tenant — saves you the back-and-forth
• We arrive, diagnose, and either fix on the spot or quote you for follow-up work
• We invoice you direct (the landlord) — tenant is never asked to pay
• You get a written diagnostic report with EICR codes referenced where applicable

Response time for North London landlord callouts: same-week, often same-day for tripping circuits, no-power, or burning smell. Out-of-hours for genuine emergencies.

If the fault is a tenant-damaged appliance (their kettle, their lamp), we tell you straight — you decide whether to pass that cost on. We don’t pad the invoice.

We work with letting agents and direct landlords across North London every month.

Honest answer: because diagnosis IS the work. Tracing an intermittent earth fault, broken ring main, or hidden cable damage takes test equipment (insulation resistance tester, multimeter, RCD ramp tester) and 30–60 minutes of methodical isolation. That’s what you’re paying for.

What we do differently:

• One fixed price, £100, for the diagnostic visit — we don’t bill £75/hour and add hours mid-job
• If we genuinely can’t find the fault in the first hour, we tell you exactly what we tested, what we ruled out, and what the next step would be (e.g. lifting floorboards, opening a wall). You decide whether to proceed
• No ‘phantom’ fixes — we won’t replace random parts hoping it goes away. Diagnosis is evidence-based: tested, isolated, identified

You walk away with a written diagnostic note even if we don’t repair on the spot — useful for insurance claims, EICR re-tests, or a second opinion.

Modern high-current appliances are the #1 cause of nuisance RCD trips in newer homes:

• Heating elements wearing out (kettles, washing machine heaters, immersion tanks) leak small currents to earth as they age. Once leakage exceeds 30mA, the RCD trips
• EV chargers — need a matched Type A or Type B RCD; mismatched types or shared circuits trip readily
• Heat pumps and induction hobs — high-frequency switching can cause ‘false’ RCD trips on older boards

Quick test: disconnect the suspect appliance, reset the trip, run the house for 24 hours. If no trip — appliance is the problem.

Solution: dedicated circuit + Type A or Type B RCD for the high-current item. We can split your existing ring or run a new dedicated circuit during the diagnostic visit if straightforward; longer jobs quoted separately.

For landlords: if a tenant’s washing machine is repeatedly tripping the whole flat, that’s tenant-side. We’ll confirm in writing.

Sort some things without paying for a callout:

• Reset a tripped breaker / RCD — check the consumer unit, find the switch in OFF, flip it ON. If it trips immediately or won’t stay on — real fault, call us
• Bulb test — if one light isn’t working, swap a known-good bulb. 50% of ‘broken light’ jobs are dead bulbs
• Plug socket isolation — unplug everything on a tripping circuit, reset, plug in one at a time. The one that trips it is your culprit
• Check garden / outdoor sockets after rain — water in an outside socket is a classic RCD-tripper

Stop and call us if:

• You smell burning or see scorch marks
• A switch or socket feels hot
• The breaker won’t stay on with everything unplugged
• Lights flicker house-wide
• You see exposed wires anywhere

We’d rather you check 5 minutes than ignore a real warning. No judgement when you call.

Yes — period properties are a North London specialty. Old wiring families:

• Rubber-sheathed cable (1930s–1960s) — perished insulation, brittle. Often causes repeat tripping in untouched parts of the house
• Lead-sheathed cable (pre-1960s) — safe if sheath intact, but joints fail
• Fabric / cloth-sheathed (Victorian) — usually long-replaced but still found in untouched cellars, attics, period light fittings
• TRS / bell wire on lights — common in 1930s–1950s upstairs lighting

For repairs: we splice in modern PVC cable safely where the old cable is sound, and replace the run where it’s perished. We don’t bury new cable inside old sheath (that’s a botch).

Honest version: if more than ~30% of a circuit shows perished rubber, a partial rewire of that circuit is more cost-effective than chasing repeat faults. We tell you straight in the diagnostic report.

Three paths after we diagnose:

Path A — small fix, <1 hour total: we do it during the £100 visit. No extra charge. Examples: replacing a faulty MCB, tightening a loose terminal, swapping a broken socket on a known-good back box.

Path B — bigger fix, parts needed: we give you a written quote on the spot covering parts + labour. You can: (a) authorise it then and there and we proceed, (b) book a follow-up, or (c) take the quote and decide. No pressure.

Path C — major work (rewire of one circuit, consumer unit upgrade, full EICR remedial): separate written quote, scheduled visit. The £100 diagnostic fee covers the visit’s testing and report — major work is quoted and billed separately.

For landlords: quotes go via you, with full diagnostic justification attached so your records (and any letting-agent paperwork) match the invoice line items.