Electrical Fault Finding in Gauteng
The earth leakage trips at two in the morning. Something smells hot near the kitchen plugs. Half the house is dead and every breaker looks fine. Electrical fault finding is how we turn "no idea" into a named cause and a quoted fix.
Most callers describe the same handful of mysteries: an earth leakage unit that trips only at night, lights that dim when the kettle goes on, a circuit that dies in wet weather, a faint burning smell with no visible source. Electrical fault finding exists for exactly these cases — problems that hide from a visual inspection and laugh at guesswork.
Guessing is expensive. Swap a breaker that was never faulty, replace a perfectly good appliance, and the trip still comes back, because the real cause was a perished cable or a failing neutral all along. We measure instead. Instruments do not have opinions.
Once the fault is pinned down, you get the reading that proves it, a quoted repair through our repair service, and a retest afterwards. If things feel dangerous right now — smoke, scorching, a board too hot to touch — skip the queue and use the 24/7 emergency electrician line instead.
Whatever you do, stop re-resetting a breaker that keeps tripping. Isolate the circuit and call 0861 995 088 — resetting into a fault is how cables catch alight.
Our Electrical Fault Finding Method
Five stages, the same discipline every time:
Symptoms and history
We start by listening: when it trips, what changed recently, whether storms, building work or a new appliance coincide. Then we map the board and its circuits.
Divide and isolate
Circuits are isolated at the DB one at a time to bracket the fault to a single circuit, appliance or stretch of cable.
Dead testing
With the power off, an insulation-resistance tester puts 500 volts between live, neutral and earth, exposing moisture and perished insulation no eye can see. A socket tester confirms polarity and earthing point by point.
Live readings
With power restored, a clamp meter shows true load and leakage current while the circuit works. Where heat is suspected, thermal imaging finds joints cooking behind cover plates before they fail.
Prove, repair, retest
You see the measurement, approve the quoted repair, and we retest the circuit afterwards so the fix is demonstrated rather than assumed.
Faults We Trace Week After Week
- Nuisance earth leakage tripping. Ageing geyser elements, damp outdoor circuits and leaky appliances are the usual suspects.
- Dead or half-dead houses. Broken conductors, failed joints and lost neutrals that leave some rooms on and others off.
- Burning smells and scorched plates. Loose terminations heating under load — found before they become fires.
- Dimming and flickering lights. Failing connections or supply-side neutral faults that deserve urgent attention.
- Wet-weather tripping. Water creeping into garden lights, gate motors and outside boxes.
- Underground cable damage. We locate buried faults from the surface, so the digging happens in one place, not ten.
- Post load shedding failures. Switching surges that quietly kill electronics, elements and breakers when the power returns.
A recent trace in Randburg
One callout we still mention: a homeowner booked electrical fault finding in Randburg after weeks of 2am earth leakage trips. Dead testing showed insulation resistance on the geyser circuit collapsing as the element heated on its timer — invisible by day, guaranteed by night. One new element later, the board has not tripped since. The same pattern fills our diaries in Edenvale and Alberton, where ageing geysers outnumber new ones.
Straight Answers on Fault Finding
You are quoted a call-out and diagnostic rate when you book, and most household faults are bracketed within the first hour. The repair itself is quoted separately, so you decide before any further cost.
No. Repeatedly resetting into a live fault stresses the wiring and can start a fire. Leave the affected circuit off and have the cause traced.
Night trips usually point at timed or temperature-driven loads: a geyser element heating on its timer, outdoor lights on a day-night switch, or dew settling into an outside fitting. Those circuits get tested first.
Easily. A single appliance leaking current to earth will drop the main earth leakage unit and everything it protects. We measure leakage per circuit and per appliance to single out the culprit.
Yes. Buried faults can be located from the surface with tracing equipment, so excavation happens at the fault rather than along the whole run.
Intermittent faults take patience rather than luck. We recreate the conditions, monitor readings over time and test under the loads that trigger the trip. Slower, but they do get found.
Yes. You receive the findings, the readings and the recommended repair in writing — often exactly what an insurer wants after storm or surge damage.
Stop Guessing. Start Measuring.
Book a diagnostic visit and get a named cause, a reading to prove it and a quoted repair — anywhere in Gauteng.