Ontario's Electrical Safety Authority (ESA) is clear: most electrical work requires a licensed electrician and a permit. But not every task is created equal. Here's how to think about it.
Safe to DIY
- Replacing a light bulb or fixture (with power off at the breaker)
- Swapping a like-for-like outlet or switch (same amperage, no new wiring)
- Resetting a tripped breaker
- Installing a smart plug or smart switch in an existing box (no new wiring)
Requires a Licensed Electrician
- Panel work of any kind — adding breakers, upgrading capacity, replacing the panel
- New circuits — running wire from the panel to a new location
- Adding outlets or switches that require new wiring
- Outdoor wiring — docks, hot tubs, outbuildings, EV chargers
- Aluminum wiring connections — common in cottages built in the 1960s–70s, requires special handling
- Anything in a bathroom or kitchen near water
Red Flags That Mean Call Now
- Breaker that trips repeatedly or won't reset
- Outlets or switches that are warm to the touch
- Flickering lights not caused by a loose bulb
- Burning smell from any outlet, switch, or panel
- Sparks when plugging in a device
In Ontario, unlicensed electrical work can void your home insurance and create serious liability if there's a fire. When in doubt, call a licensed electrician. The inspection fee is nothing compared to the cost of a claim denial.