Why Does My Breaker Keep Tripping? A Calgary Electrician Explains
A tripping breaker is one of the most common electrical complaints Calgary homeowners call about. It's frustrating — especially when it keeps happening on the same circuit. The good news is that a breaker tripping is actually your electrical system working as designed. The less good news is that if it keeps happening, something needs attention. Here's what's actually going on and what to do about it.
What Does a Breaker Actually Do?
Your electrical panel is full of circuit breakers — one for each circuit in your home. A breaker's job is to monitor the electrical current flowing through its circuit and trip (shut off) automatically if that current exceeds a safe level. This protects your wiring from overheating and prevents electrical fires.
So when a breaker trips, it's not the problem — it's the warning sign that something on that circuit is drawing too much power or that there's a fault somewhere in the wiring.
The Most Common Reasons a Breaker Keeps Tripping
1. Circuit Overload This is the most common cause. Every circuit in your home has a maximum load — typically 15 or 20 amps for most residential circuits. If you're running too many appliances or devices on the same circuit at the same time, the breaker trips to prevent the wiring from overheating.
Common culprits in Calgary homes: space heaters, hair dryers, microwaves, and vacuum cleaners — especially when run simultaneously on the same circuit as other loads.
The fix is either redistributing your loads across different circuits or having an electrician add a dedicated circuit for high-draw appliances.
2. A Short Circuit A short circuit happens when a hot wire comes into contact with a neutral wire inside an outlet, switch, appliance, or somewhere in the wiring. Short circuits cause a sudden, large surge of current — which trips the breaker immediately. You'll often notice a burning smell or see scorch marks around an outlet if a short circuit has occurred.
Short circuits are more serious than overloads and should always be diagnosed by a licensed electrician.
3. A Ground Fault Similar to a short circuit, a ground fault occurs when a hot wire contacts a ground wire or a grounded surface — like a metal outlet box or a wet floor. Ground faults are particularly dangerous in areas with water, which is why GFCI outlets are required in kitchens, bathrooms, and garages.
If your breaker trips regularly in a bathroom or kitchen circuit, a ground fault may be the cause.
4. A Worn Out Breaker Breakers don't last forever. An older breaker can become sensitive and trip under normal loads, or it can fail to trip when it should — which is actually more dangerous. If a breaker trips repeatedly without an obvious overload cause, the breaker itself may need to be replaced.
5. Arc Fault Arc faults happen when electricity jumps (arcs) between two conductors — often due to damaged, loose, or deteriorated wiring. Arc faults are a leading cause of house fires and aren't always obvious. Modern electrical codes require Arc Fault Circuit Interrupter (AFCI) breakers in bedrooms and living areas for this reason. If your breaker trips without a clear load reason, an arc fault could be the culprit.
What Should You Do When a Breaker Trips?
Turn off or unplug devices on the tripped circuit
Locate your panel and find the tripped breaker — it will be in the middle position or fully off
Reset it by switching it fully off, then back on
If it holds, you likely had an overload — redistribute your devices
If it trips again immediately or repeatedly, stop resetting it and call a licensed electrician
Never tape a breaker in the on position or replace a breaker with a higher-amp version to "fix" tripping. Both are serious fire hazards.
When to Call an Electrician
Call a licensed electrician if:
The breaker trips immediately after resetting
You smell burning near the panel or an outlet
You see scorch marks anywhere on outlets, switches, or the panel
The same breaker trips regularly under normal use
Multiple breakers are tripping at the same time
Switch It Up Electric serves Calgary homeowners across SE Calgary, Airdrie, Chestermere, and Cochrane. If your breaker keeps tripping and you're not sure why, we'll diagnose the issue and give you a straight answer on what needs to be done.
Switch It Up Electric serves SE Calgary, Airdrie, Chestermere, and Cochrane.