Why Does My Breaker Keep Tripping?

A circuit breaker that keeps tripping is a safety mechanism doing its job — protecting your home's wiring from overheating and potential fire. While it's tempting to simply reset it and move on, repeated trips indicate an underlying issue that needs attention. Understanding the cause helps you decide whether it's a simple fix or requires a licensed electrician.

Circuit overload is the most common cause — too many appliances drawing power from a single circuit. This is especially common in older Canadian homes built before the era of multiple high-draw devices. A short circuit caused by damaged wiring or a faulty appliance is more serious. Ground faults, where a hot wire contacts a ground wire or metal box, are another frequent cause, particularly in damp areas.

A flashlight, a notepad to track which outlets are on which circuit, and a non-contact voltage tester (CAD $15–$30). You should not need to open the electrical panel — if you do, call a professional.

1. Identify which breaker has tripped — it will be in the middle position between ON and OFF.
2. Turn off or unplug all devices on that circuit.
3. Reset the breaker by pushing it firmly to OFF, then back to ON.
4. Plug devices back in one at a time. If the breaker trips when a specific appliance is plugged in, that appliance is likely faulty.
5. If the breaker trips with nothing plugged in, the issue is in the wiring itself — do not reset it again.
6. Redistribute high-draw appliances (space heaters, hair dryers, microwaves) across different circuits to prevent overloading.

If the breaker trips repeatedly with nothing plugged in, you smell burning, or see scorch marks on the panel or outlets, call a licensed electrician immediately. These are signs of a wiring fault that poses a fire risk. Never replace a breaker with a higher-amp one — this defeats the safety protection and is a code violation in all Canadian provinces.