Electrical Fault Finding in Sydney

An electrical fault rarely announces itself clearly. The safety switch drops out every few days with no pattern to it. One power point stopped working and nobody remembers when. The lights dip whenever the washing machine hits its spin cycle. None of it is bad enough to call about, until it is.

Finding the actual cause is the job, and it is a different skill to fixing it. Licensed electricians at Aussie Home Services test properties across Greater Sydney, the Blue Mountains, the Central Coast and the Southern Highlands to isolate faults properly rather than replacing parts and hoping. Call 1300 164 206 at any hour.

The faults we get called to most

Some of these are a nuisance and some are a genuine hazard. Told apart early, they are almost always cheaper to resolve.

A safety switch or breaker that keeps tripping

This is the most common callout by a wide margin. A safety switch trips because it has detected current leaking somewhere it should not go, which might be a failing appliance, water in an outdoor circuit, or damaged cable inside a wall. Testing each circuit under load narrows it down to the one at fault.

Lights that flicker or dim

Flickering that affects one fitting usually points at the fitting or its connection. Flickering across the house when an appliance starts up suggests a loose connection on a main terminal or a circuit carrying more than it was designed for. The second of those is worth looking at quickly, because loose terminations generate heat.

Dead power points and switches

An outlet that has stopped working might be the outlet, the circuit feeding it, or a connection in a junction further back. Corrosion, heat damage and cable fatigue behind the wall all present the same way from the front.

Burning smells, buzzing or crackling

Any of these means something is arcing or overheating right now. Turn the circuit off at the board if you can identify it, and treat it as urgent rather than something to book in.

One appliance that trips the power

Where the power drops out only when a particular appliance runs, the fault is usually in the appliance rather than the wiring. Testing confirms which, and saves you paying an electrician to chase a problem an appliance repairer should handle.

How a fault is traced

Fault finding is a process of elimination, and doing it properly is what stops the same problem returning in a fortnight. It starts with questions rather than tools. When did it begin, what was running at the time, and has anything changed in the house recently.

From there the circuits are isolated one at a time and tested with equipment that measures what cannot be seen. Insulation resistance testing shows where cable is breaking down inside a wall. Thermal imaging finds connections running hotter than they should behind a switchboard cover. Clamp testing shows exactly how much load a circuit is carrying against what it was rated for.

You get an explanation of what was found in plain terms, a fixed price to repair it, and the choice of whether to proceed. Most faults are resolved on the same visit once the cause is confirmed.

Why a safety switch that keeps tripping matters

Plenty of people live with a safety switch that drops out now and then, resetting it each time and getting on with the day. It is worth understanding what that device actually does before treating it as an inconvenience. Our guide to electrical safety tips for homeowners lists the checks every household should know.

A safety switch, or RCD, monitors the current flowing out on a circuit against the current returning. When those figures stop matching, it means electricity is escaping the circuit, and the most dangerous way that happens is through a person. The switch cuts power in about 30 milliseconds, which is fast enough to prevent a fatal shock in most cases.

A switch tripping repeatedly is doing its job and telling you there is a real fault to find. The risk is not the tripping. It is what happens if the fault is left in place and the switch itself eventually fails, or if somebody bypasses it out of frustration. Boards with no safety switches at all should be dealt with as a switchboard upgrade rather than a repair.

What fault finding costs

Diagnosis is charged separately from the repair, because the time it takes depends entirely on how well the fault cooperates. An obvious dead circuit can be found in under an hour. An intermittent fault that only appears when it rains can take several visits to catch in the act.

You are quoted for the diagnostic work before it starts, and again for the repair once the cause is known. Neither price changes without your approval. There is no call-out fee on appointments booked for the next day or later.

Why this is not worth attempting yourself

The temptation with an intermittent fault is to work through it by trial and error, switching breakers off and unplugging things until the problem stops. That approach occasionally identifies a faulty appliance. More often it moves the fault around without finding it, and it carries real risk once you are working near a live board.

In NSW, electrical work has to be carried out by a licensed electrician, and completed work comes with a Certificate of Compliance for Electrical Work. That certificate is what your insurer will ask about if a fault ever causes damage, and work done without it can put a claim at risk.

Faults that need attention tonight

Call 1300 164 206 straight away if you have a burning smell with no obvious source, smoke or sparks from a board, outlet or fitting, a switch or power point that is hot to touch, or a safety switch that will not stay on at all. An emergency electrician is available every day of the year, including public holidays.

Where power is out and you are not sure whether the fault is yours or the network’s, check whether your neighbours have supply. If the street is out, it sits with the network operator. If it stops at your boundary, work on the service mains may be needed and it is worth a call.

Booking a fault finding visit

Work is carried out by licensed tradespeople under NSW licence 273594C, quoted at a fixed price before it begins, and backed by a lifetime labour guarantee. Every completed job comes with a Certificate of Compliance for Electrical Work.

Call 1300 164 206 to book, or send through the form on this page and an electrician will call you back to confirm a time and talk through what you are seeing.