Fault finding is the most under-skilled part of domestic electrical work — many electricians swap parts until something works. We use insulation testers, clamp meters and thermal imaging to identify the actual root cause first time. Most household faults are solved in under two hours once correctly diagnosed.
What we do
Systematic diagnosis: visual, instrument-based testing, thermal imaging on DB and high-load circuits. We identify the cause, not just the symptom.
Common electrical faults by symptom
What the symptom usually points to.
| Symptom | Likely cause |
|---|---|
| Earth leakage keeps tripping | Faulty appliance, geyser or wet circuit |
| One breaker trips | Overload or fault on that circuit |
| Lights flicker | Loose connection or LED-dimmer mismatch |
| Warm / discoloured sockets | Loose connection — fire risk |
| Half the house dark | Tripped section or supply fault |
Our process
- 1Visual inspection
- 2Insulation testing on suspect circuits
- 3Clamp-meter load testing
- 4Thermal imaging on DB
- 5Identify and repair root cause
Pricing
Diagnosis R650–R1,200 typically 1–2 hours. Repair quoted separately once cause is known.
Prices are indicative for Northern Johannesburg, 2026. Every job is quoted in writing on site before work proceeds.
Why choose Apple Plumbing & Electrical
Proper instruments — insulation tester, clamp meter, thermal imager — on every fault finding call.
Frequently asked questions
Need Faults & Diagnostics in Northern Joburg?
Owner-managed by Garth Blair. We pick up the phone and book you in personally.
Speak to Garth directly.
Owner-managed means you reach the person who's accountable. Phone, email or WhatsApp — whatever's easiest for you.
- Call now082 886 9119
- WhatsApp082 886 9119
- Emailgarth@appleplumbing.co.za
- Service areaSandton, Midrand & Northern JHB
- HoursMonday to Saturday, 07:00 – 17:00