Electrical 101 — What Every Canadian Homeowner Should Know
Understand common electrical issues, when it's safe to DIY vs. call a pro, panel upgrade basics, EV charger requirements, and how to choose the right electrician.
When to DIY vs. Call a Licensed Electrician
Safe to DIY
- Replacing a light bulb or lamp shade
- Replacing a switch plate or outlet cover
- Resetting a tripped breaker
- Replacing a plug on an appliance cord
- Testing GFCI outlets with the test/reset buttons
- Changing batteries in smoke detectors
Call a Licensed Electrician
- Any work involving wiring or circuits
- Panel upgrades or breaker replacements
- Installing new outlets or switches
- EV charger installation (240V circuits)
- Knob-and-tube or aluminum wiring remediation
- Any work requiring an ESA permit
- Hot tub, pool, or generator hookup
Panel Upgrade Guide
Your electrical panel is the heart of your home's electrical system. It distributes power to every circuit in your house. Most older Canadian homes have 60A or 100A panels, which are often insufficient for modern electrical demands.
A panel upgrade typically costs $2,000-$4,500 including the ESA permit and inspection. Your electrician handles the permit process.
EV Charger Installation Basics
With EV adoption growing rapidly in Canada, home charger installation is one of the fastest-growing services electricians provide.
Many provinces and utilities offer rebates for EV charger installation. Check with your local utility before getting quotes.
Knob-and-Tube Wiring: What You Need to Know
Knob-and-tube (K&T) wiring was standard in Canadian homes built before 1950. While not inherently dangerous when intact, it has no ground wire, can't handle modern electrical loads, and many insurance companies refuse to cover homes with active K&T wiring.
A full K&T rewire typically costs $8,000-$15,000+ depending on the size of the home. Many electricians can do the work in stages (floor by floor) to spread out the cost. Always get an ESA inspection after rewiring.
ESA Inspections (Ontario)
In Ontario, the Electrical Safety Authority (ESA) is responsible for inspecting electrical work to ensure it meets the Ontario Electrical Safety Code. Most electrical work requires an ESA permit and inspection.
When is an ESA permit required? For most electrical work beyond simple replacements — new circuits, panel upgrades, EV charger installation, rewiring, outdoor wiring, hot tub hookups, and more.
Cost: Most ESA permits and inspections cost $100-$300. Your electrician typically handles the application.
Other provinces: Each province has its own electrical inspection authority. Your licensed electrician will know the local requirements.
Electrical Licensing in Canada
Every province and territory in Canada requires electricians to be licensed. The typical path is: apprenticeship (4-5 years), journeyman certification, and then optional master electrician designation.
Always ask to see an electrician's license and proof of insurance before hiring. A licensed electrician carries liability insurance and Workers' Compensation coverage, protecting you from liability if something goes wrong.
How to Choose the Right Electrician
Get 2-3 quotes. For any non-emergency job, always get multiple written quotes. Be wary of quotes that are dramatically lower than others — it may indicate corners being cut.
Check reviews. Look at Google reviews and ask for references. An electrician with consistent 4+ star reviews and many reviews is generally a safe bet.
Ask about warranty. Reputable electricians warranty their work — typically 1-2 years on labour and parts. Get it in writing.
Confirm licensing and insurance. Ask for their license number and proof of insurance. This protects you from liability.
Get a written estimate. A good electrician will provide a detailed written estimate before starting work. Avoid anyone who insists on starting without one.