Your electrical panel — also called a breaker box or service panel — is the central hub that distributes electricity throughout your home. Most panels are designed to last 25–40 years, but that doesn't mean yours is safe to leave unchecked. Outdated panels are a leading cause of residential electrical fires in Canada.
Here are the seven signs most homeowners miss — and what to do if you recognize any of them.
1. Breakers that trip frequently
A breaker tripping once in a while is normal — it's doing its job, protecting your home from an overload. But if specific breakers trip repeatedly, that's a signal your circuits can't handle the load you're putting on them. This usually means you need additional circuits or a panel upgrade to handle more capacity.
2. You still have a fuse box
Fuse boxes were standard in homes built before the 1960s. If your home still has one, upgrade it. Fuses can't be reset like breakers — they blow and need replacing. Worse, homeowners often install the wrong fuse size, which can allow dangerous amounts of current to flow before the circuit 'protection' kicks in.
Many insurers in Ontario won't cover a home with a fuse box or will charge significantly higher premiums. Call your broker to find out where you stand.
3. Flickering or dimming lights
If your lights flicker when you run the dishwasher, microwave, or air conditioner, your panel likely can't supply enough consistent power. This is called voltage fluctuation and it shortens the life of your appliances and electronics — and in some cases can cause fires in your wiring.
4. You rely on extension cords constantly
Extension cords are a temporary solution. If you're using them regularly to power items because you don't have enough outlets, you need additional circuits — which may require a panel upgrade to support the extra capacity. Daisy-chaining power bars is genuinely dangerous and a fire hazard.
5. Your panel is warm to the touch or shows signs of burning
An electrical panel should never feel warm. If it does — or if you notice burn marks, discoloration, or a burning smell near the panel — turn off the main breaker immediately and call a licensed electrician. This is an emergency, not a "schedule it for next week" situation.
6. You're planning a major renovation or adding high-draw appliances
Adding an EV charger, hot tub, central air conditioning, or finishing a basement all require significant additional electrical capacity. A 100-amp panel — standard in many older GTA homes — simply can't support a modern home with these additions. Most renovations trigger an ESA inspection, and your panel will be assessed.
7. Your panel is a known problem brand
Federal Pacific Electric (Stab-Lok) panels and Zinsco/GTE-Sylvania panels have well-documented failure rates. If you have either brand, replace it — don't wait for something to go wrong. Your insurance company may already be aware of this.
What does a panel upgrade cost in the GTA?
A typical residential panel upgrade in Toronto runs from $1,200 to $3,500 depending on the size of the upgrade (100A, 200A, or 400A), the complexity of the work, and whether permits and ESA inspections are included (they should always be). Get a written quote that includes permit fees — some contractors quote low and add these on later.
At Safer Electric, all our panel upgrade quotes include the ESA permit and inspection fee. No surprises at billing.
Safer Electric Team
Licensed Electricians · Toronto, ON
Our team of licensed GTA electricians writes these guides to help homeowners make informed decisions. Every article is reviewed for technical accuracy.