Electrical repair

Electrical Repair & Troubleshooting

Most electrical faults show up as a symptom in one room and have a cause somewhere else. Diagnosis comes first, so the repair addresses the fault instead of the symptom.

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By symptom

What it usually means, and what we do about it

Electrical faults present as something you can see and are caused by something you cannot. These are the ones we are called out to most, with the reasoning behind each.

A breaker that keeps tripping

What you notice: It resets, then trips again — either straight away, or reliably when a particular appliance runs.
Usual causes: An overloaded circuit carrying more than its rating, a short circuit between conductors, current leaking to ground, or a breaker that has simply worn out and now trips below its rating.
How it is approached: Establish which of those four it is before replacing anything. That means measuring the load the circuit actually carries, then isolating sections of the circuit to find where a fault sits. A breaker swap on a circuit with a genuine fault removes the warning and leaves the problem.

An outlet that has stopped working

What you notice: One receptacle is dead while the rest of the room works, or a run of outlets on one wall is out.
Usual causes: Very often a tripped GFCI in a bathroom, garage or exterior outlet protecting the whole run. Otherwise a failed receptacle, a broken connection at a back-stabbed terminal, or a loose neutral upstream.
How it is approached: Test the run to find where power stops, then examine the connection at that point. Loose connections are worth finding early: they heat up, and heat is what turns a dead outlet into a burnt one.

Lights that flicker or dim

What you notice: Flicker in one fixture, or across several rooms — sometimes worsening when the air conditioner or a well pump starts.
Usual causes: A single fixture is usually the lamp, the holder or a dimmer that does not suit the load. Flicker across multiple circuits points upstream: a loose neutral, a failing connection at the panel, or a service connection that is deteriorating.
How it is approached: The distinction matters more than it sounds. Whole-house flicker, especially with a burning smell or a warm panel, is treated as urgent rather than cosmetic — a failing neutral can put uneven voltage across appliances and damage them.

Part of the house with no power

What you notice: Several rooms out while the rest of the house is normal, and the breakers all appear to be on.
Usual causes: Commonly one leg of the incoming service lost at the panel, main lug or meter — which takes out roughly half the circuits in the house while leaving the other half live. Also a tripped main, a failed breaker, or damage to the service conductors.
How it is approached: Test at the panel to determine whether both legs of the service are present, then work back towards the meter. Where the fault is on the utility's side of the meter, that is the utility's work and we will tell you so rather than charge for finding out.

A sparking or discoloured outlet

What you notice: A visible spark that is not simply a plug making contact, a brown or black mark around the slots, a warm faceplate, or a buzz.
Usual causes: Almost always a poor connection — a worn receptacle whose contacts no longer grip, or a loose terminal screw. Both generate heat at the point of the fault.
How it is approached: Stop using the outlet and have it looked at rather than replaced blind: the damaged device is a symptom, and the conductor behind it may be damaged too.

A burning smell or a warm panel

What you notice: A smell of hot plastic near a device or the panel, or a panel cover that is warm to the touch.
Usual causes: Heat from a failing connection, an overloaded conductor, or a breaker not seated properly on the bus.
How it is approached: This is the one on the list that does not wait for an appointment. See the notice below, then the emergency page.

Faulty switches and dimmers

What you notice: A switch that has to be held, buzzes, feels warm, or works intermittently.
Usual causes: A worn mechanism, a loose conductor at the switch, or a dimmer paired with LED lamps it was never designed to control.
How it is approached: Replace the device where that is genuinely the fault, and check the connections behind it while it is open — a switch is often where a loose neutral first shows itself.

Storm and surge damage

What you notice: Equipment that stopped working after a storm, or visible damage to the service mast, meter enclosure or overhead conductors.
Usual causes: A nearby strike or a switching surge can damage electronics without leaving a mark on the wiring. Wind and falling limbs damage the service equipment itself.
How it is approached: Damaged service equipment is assessed before anything is re-energised, and coordinated with the utility where the damage is on their side. Whole-home surge protection at the panel is the usual preventative measure afterwards.

Safety

What to do before an electrician arrives

Not much, and that is deliberate — most of what makes an electrical fault worse is someone investigating it.

What does help

Note when it started, and whether anything changed around then — a new appliance, work done in the house, or a storm.
Note which rooms and which devices are affected. Half the house behaving differently from the other half is a specific and useful clue.
Photograph the inside of the panel door where the circuit labels are, and the outlet or fixture involved. Photographs shorten the diagnosis.
Keep the affected circuit off, rather than using it lightly. Intermittent use of a faulty circuit is how a small fault becomes a fire.

What to expect

How a repair visit runs

Diagnose, explain, then repair what you have approved.

1
Tell us what is happening
What the symptom is, when it started, and which part of the house it affects. Photos of a panel or an outlet help more than you would think.
2
Schedule electrical service
We agree a time for an electrician to attend. If what you have described sounds like a safety risk rather than a repair, we will say so on the call.
3
An electrician evaluates the fault
Testing at the device, the circuit and the panel as needed, so the cause is identified rather than guessed at from the symptom.
4
You get clear options
What was found, what it will take to put right, and where there is a choice between a repair now and a larger piece of work later.
5
Approved work is completed and tested
The work you have approved, then tested and left working, with the circuit and its protection verified before we leave.

Questions

About electrical repairs

Can you find a fault without knowing which circuit it is on?: Yes — that is what troubleshooting is. The work is to narrow it down: identify which circuit is affected, test along it to find where the fault sits, and isolate sections until the cause is located. It takes as long as it takes, which is why diagnostic work is priced differently from installation work where the scope is known in advance.
Is it cheaper to repair the circuit or upgrade the panel?: It depends on why the circuit is failing. A single damaged section of cable is a repair, and replacing the panel would not fix it. But repeated problems across several circuits, a panel with no spare capacity, or an obsolete panel with unreliable breakers is a case where repairing one circuit at a time costs more over a few years than addressing the panel once. Where that is the situation you will be told both options and the reasoning.
Panel upgrades
Should I keep resetting a breaker that trips?: No. A breaker trips because current exceeded what the circuit can safely carry, or because current is escaping where it should not. Resetting repeatedly puts that condition back and, on an already-stressed breaker, wears the mechanism. If a breaker will not stay on, leave it off and have the circuit looked at.
Tracing a tripping breaker

Related electrical services

Something not working the way it should?

Describe what is happening and which part of the house it affects. If it sounds like a safety risk rather than a repair, we will say so straight away.