Troubleshooting · Oakville, ON
Breaker Keeps Tripping in Oakville
A breaker that trips once is doing its job. A breaker that trips again and again is telling you something specific, and there are only five things it can be.
WSIB compliant · 30+ years · Top 3 in Hamilton
Quick answer
If a breaker keeps tripping in your Oakville home, the cause is an overloaded circuit, a short circuit, a ground fault, an arc fault, or a worn breaker. Reset it once. If it trips again, stop resetting and call a licensed electrician: Apollo Electric at 905-921-5487. Burning smell or smoke means call 911 first.
When a breaker keeps tripping, the instinct is to keep pushing it back on. That is the one thing not to do. A breaker is a safety device, and each trip is a measurement: something on that circuit drew more current than the wire can safely carry, or current went somewhere it should not have gone.
Apollo Electric Inc. has traced tripping breakers across Oakville, Burlington and Hamilton for over 30 years, under ECRA/ESA licence 7009372. This guide explains what each kind of trip means, which ones you can solve yourself, and which ones need a licensed electrician the same day.
The Five Reasons Breakers Trip
When a breaker keeps tripping, it comes down to one of five causes. The pattern of the trip usually tells you which.
| Cause | What it looks like | Who fixes it |
|---|---|---|
| 1. Overload | Trips after a few minutes when several appliances run together: kettle and toaster, hair dryer and heater, air conditioner on a hot afternoon. Resets and holds once the load drops | Often you, by moving appliances to other circuits. An electrician if it happens constantly, because the circuit is undersized for how the room is used |
| 2. Short circuit | Trips instantly, the moment it is reset or the moment one particular thing is switched on. Sometimes a pop or a flash | An electrician. A hot conductor is touching neutral somewhere, in a device, a fixture or the wire itself |
| 3. Ground fault | A GFCI outlet or GFCI breaker trips in a bathroom, kitchen, garage, basement or outdoors, often after rain or around water | You can reset it once. Repeated trips need an electrician, because current is leaking to ground |
| 4. Arc fault | An AFCI breaker trips, usually on bedroom or living area circuits, sometimes with no obvious load running | An electrician. Arcing is the fault that starts fires inside walls, and it is exactly what the AFCI is built to catch |
| 5. Worn breaker | Trips at loads that used to be fine, feels loose or warm, or will not stay latched | An electrician. Breakers wear out, and some older panel brands are known for it |
When a breaker keeps tripping, the distinction that matters most is time. A trip after several minutes points at overload. A trip the instant you reset it points at a short or a fault, and resetting it again only repeats the fault at full current.
Which Breaker, and What It Tells You
Which breaker keeps tripping narrows the cause further. These are the patterns we see most often in Oakville homes.
- Kitchen counter circuits. Almost always overload. Modern counters carry a kettle, a toaster oven, an air fryer and a coffee machine, and older kitchens were wired for a fraction of that.
- Bathroom circuit. A hair dryer and a space heater together will overload most bathroom circuits. If a GFCI trips with nothing running, suspect moisture in a device or a failing fan.
- Bedroom circuits in winter. Space heaters. One heater on a bedroom circuit shared with other rooms is the classic cold weather trip.
- Air conditioning or heat pump. Trips on hot days usually mean a failing compressor component or a breaker nearing the end of its life, both of which need a technician rather than a reset.
- Garage and outdoor outlets. Ground faults from water, or from a tool with damaged insulation.
- EV charger circuit. A charger that trips its breaker was often installed without a proper load calculation, or on a circuit that was never sized for continuous charging.
If the trip leaves part of the house dark and you cannot find which breaker went, our guide to a partial power outage walks through the panel check step by step.
When Should You Call an Electrician If Your Breaker Keeps Tripping?
If a breaker keeps tripping and any of these apply, call the same day. Call right away, day or night, if there is heat, smell or smoke.
- It trips again immediately after one reset. That is a short circuit or a ground fault, not overload.
- You smell burning, see scorch marks, or feel a warm faceplate or panel. Stop, leave the breaker off, and call. If there is smoke, call 911 first.
- It trips with nothing running. Something on the circuit is faulted, and the fault does not need a load to show itself.
- It trips more often than it used to at loads it handled for years. The breaker or a connection is deteriorating.
- An AFCI keeps tripping. Arcing inside a wall is invisible until it is not.
- The breaker feels loose, hot, or will not latch. The breaker itself has failed.
- Water is anywhere near the panel. Oakville Hydro's own guidance is not to use wet outlets, switch boxes or breaker panels until an electrician has checked them.
For the full after hours picture, including when the utility is the right call instead, see our Halton emergency page for Burlington and our emergency electrician in Hamilton guide. Our emergency line covers Oakville and is answered 24 hours a day.
Newer Homes and Arc Fault Breakers
Homes built in the last decade or so, which covers much of north Oakville, use arc fault circuit interrupters on many circuits. They are more sensitive than a standard breaker by design, and they occasionally trip on things that are not dangerous, such as some older vacuum cleaners or treadmill motors.
The wrong response is to swap the AFCI for a standard breaker. It removes the protection the code requires, it will fail an inspection, and it hides the one fault an AFCI exists to catch. The right response is to find out whether the trips follow a particular appliance, which is a nuisance, or happen at random, which is a wiring problem. An electrician can tell the difference with testing rather than guesswork.
Oakville Homes, Era by Era
The age of the house predicts why a breaker keeps tripping better than the symptom alone does.
| Area and era | What we typically find |
|---|---|
| Old Oakville and Bronte, older and heritage homes | Circuits never sized for modern kitchens, panels that have been added to piecemeal, and sometimes original wiring behind plaster |
| Falgarwood, College Park and Clearview, 1960s and 70s | Aluminum branch wiring in some homes of that era, where loose terminations heat up, and panels at or near capacity |
| Glen Abbey and River Oaks, 1980s and 90s | Sound wiring and full panels, so trips are usually overload from how rooms are now used |
| North Oakville, newer builds | Modern panels with AFCI and GFCI protection throughout, so trips are more often device related or nuisance trips |
If a breaker keeps tripping because the panel simply has no room left, the fix is a capacity upgrade rather than a repair. Our guide to an electrical panel upgrade explains how that decision is made.
Your Electrician or Oakville Hydro
Oakville has its own distributor, Oakville Hydro, and it handles a different set of problems from an electrician. A breaker that keeps tripping inside your house is never the utility's to fix.
| Situation | Call |
|---|---|
| A breaker keeps tripping, neighbours have power | A licensed electrician. Apollo Electric, 905-921-5487 |
| Smoke, fire, or a burning smell that is getting stronger | 911, before anyone else |
| The whole street is dark | Oakville Hydro, 905-825-9400, or check the outage map at oakvilleoutages.ca |
| A downed or damaged power line | 911 and Oakville Hydro, 905-825-9400. Stay at least 10 metres back, about the length of a school bus |
What We Do When We Arrive
- Ask about the pattern. When the breaker keeps tripping, when it trips, what was running, and how quickly. That alone often narrows it to one cause.
- Test the circuit. Insulation resistance and continuity testing finds shorts and ground faults that a visual check never will.
- Check the breaker and the panel. Heat, loose terminations, and whether the breaker is still tripping at its rated current.
- Trace the fault to the device or the run. Most faults are at a connection, not in the middle of a cable.
- Explain and quote before fixing. What we found, what it costs, and what can wait.
- Repair and verify under load. The circuit is run with its normal load before we leave, not just switched on.
What customers say
Called Zvonko from Apollo Electric to check a problem with a plug that caused a short circuit. Came same day and all was in order within 15 minutes.
Sam, via HomeStars
He is an expert at diagnosing complex problems that others couldn't diagnose.
Mark Crooker, Optimal Property Management
More are on our reviews page.
What Moves the Price
| Driver | Effect |
|---|---|
| Finding the fault | An intermittent fault takes longer to trace than one that trips every time |
| Where it is | A faulted receptacle is quick. A damaged cable behind a finished wall is not |
| What it needs | A new device or breaker, a new dedicated circuit for an overloaded room, or a panel upgrade if there is no capacity left |
| When you call | Evening and weekend emergency calls are priced differently from a booked visit |
Call 905-921-5487 or book a visit. The full residential scope is on our residential services page.
Frequently Asked Questions
My circuit breaker keeps tripping in my Oakville home. Which electrician should I call?
Call a licensed electrical contractor with an ECRA/ESA number. Apollo Electric holds licence 7009372, is WSIB compliant, serves Oakville, and answers 905-921-5487 24 hours a day. If the whole street is dark, call Oakville Hydro at 905-825-9400 instead. If there is smoke, call 911 first.
Is it dangerous if a breaker keeps tripping?
When a breaker keeps tripping, the trip itself is the breaker protecting you. The danger is what is causing it, and the danger grows if the breaker is forced back on repeatedly. Reset once. If it trips again, leave it off and call an electrician.
Can I just replace the breaker myself?
No. If a breaker keeps tripping, swapping it yourself is not the answer. Work inside the panel is notifiable in Ontario and must be done by a licensed electrical contractor. A new breaker also rarely fixes the problem, because the breaker is usually reporting a fault rather than causing one.
Why does my breaker trip when I use a space heater?
A space heater is the most common reason a bedroom breaker keeps tripping in winter. A typical space heater draws most of what a standard 15 amp circuit can safely carry. Add anything else on the same circuit and it overloads. Move the heater to a circuit with nothing else running, and if that is not possible, ask about a dedicated circuit.
What is the difference between a GFCI trip and a breaker trip?
A GFCI detects current leaking to ground and trips at a very small imbalance, protecting people from shock. A standard breaker trips on overload or a short circuit, protecting the wiring. A GFCI can be an outlet with test and reset buttons, or a breaker in the panel.
Does Apollo Electric serve Oakville?
Yes. Apollo Electric serves Oakville along with Burlington, Milton, Hamilton, Dundas, Ancaster, Waterdown, Stoney Creek, Grimsby, Cambridge and Kitchener-Waterloo.
References
- Oakville Hydro, what to do when the power goes out, including checking wet equipment.
- Oakville Hydro outage map, current outages and reporting.
- Electrical Safety Authority, Ontario's electrical safety regulator.
- ESA, finding the right contractor, on licensing and the Authorized Contractor Program.
Apollo Electric Inc.
Breaker still tripping in Oakville? We can trace it today.
Apollo Electric Inc., 83 Ferndale Ave, Hamilton, ON L8K 4L7
905-921-5487 · ECRA/ESA 7009372 · WSIB compliant · Answered 24 hours a day