Recently Asked Questions
Browse the latest electrical questions from Toronto and GTA homeowners.
Can a smart panel balance EV load in Toronto?
Yes, a smart panel can actively balance EV charging load in a Toronto home — and for many GTA homeowners with 100A or 20...
Is a battery backup system like Tesla Powerwall a better option than a generator for my Toronto home?
Both battery backup systems and generators have legitimate roles in Toronto homes, but for most GTA homeowners dealing w...
Do Toronto soffit outlets need a switch for holiday lights?
Soffit outlets for holiday lights in Ontario do not require a dedicated wall switch, but the Ontario Electrical Safety C...
Is it worth upgrading from 100 amp to 400 amp service for a large home with an EV charger, hot tub, and workshop?
For a large home with an EV charger, hot tub, and workshop, jumping straight to 400A service is worth serious considerat...
What is the difference between Z-Wave, Zigbee, and WiFi smart switches for a Toronto home?
For a Toronto home, the right smart switch protocol depends on your home's size, your existing smart home ecosystem, and...
Can attic insulation cover old Toronto wiring?
No — attic insulation should never cover knob-and-tube wiring, and in Ontario it's actually prohibited by code. This is...
Why does my bathroom fan continue running for a few minutes after I turn the switch off?
Your bathroom fan is most likely wired to a timer switch or delay-off switch, which is designed to keep the fan running...
Can my Toronto condo's 60-amp panel handle multiple smart home devices like a smart oven and EV charger?
A 60-amp panel cannot safely support a smart oven and EV charger simultaneously — and in most Toronto condos, adding bot...
What are the ESA permit requirements for adding recessed lighting to a finished basement in Mississauga?
Adding recessed lighting to a finished basement in Mississauga requires an ESA permit in virtually every scenario — the...
Does my Toronto meter base need replacing with a panel upgrade?
Not always — but it depends on the condition and rating of your existing meter base, and a panel upgrade is often the ri...
How long does it take to install a whole-home standby generator from start to finish in Ontario?
A whole-home standby generator installation in Ontario typically takes 4 to 12 weeks from first call to fully operationa...
How long does it take to rewire a 1920s semi-detached in High Park including the ESA inspection?
A full rewire of a 1920s High Park semi-detached typically takes 5–10 working days for the electrical work itself, plus...
What smart home devices require a dedicated circuit and which ones can share existing wiring?
Most smart home devices run on standard shared circuits, but a handful of high-draw smart appliances absolutely require...
What are the ESA permit requirements for rewiring a kitchen and bathroom in a Scarborough bungalow?
Any rewiring of kitchen or bathroom circuits in a Scarborough bungalow requires an ESA permit — no exceptions. These are...
Can I install a portable generator transfer switch in my Toronto condo townhouse?
A portable generator transfer switch can be installed in a condo townhouse, but it's significantly more complicated than...
What's the timeline for rewiring a three-storey Victorian in Cabbagetown from knob-and-tube to modern wiring?
A full rewire of a three-storey Victorian in Cabbagetown typically takes 2 to 4 weeks of active work, but the complete p...
Is there a different ESA permit process for commercial versus residential electrical work in Ontario?
Yes, the ESA permit process differs meaningfully between commercial and residential electrical work in Ontario, though t...
What are the current Ontario electrical code requirements for outlet placement in a bathroom renovation?
Ontario's Electrical Safety Code requires at least one GFCI-protected outlet in every bathroom, and that outlet must be...
My condo building in downtown Toronto has a 60 amp panel — can I upgrade it or is that the building's decision?
In a condo, the answer is almost always: it's the building's decision, not yours — but there's more nuance to it than a...
What should I expect to pay for a whole-condo lighting upgrade with dimmers in a downtown Toronto unit?
A whole-condo lighting upgrade with dimmers in a downtown Toronto unit typically runs $3,000–$8,000 depending on the num...
How much money do I actually save doing my own electrical work versus hiring a licensed electrician in Toronto?
The honest answer: the savings are smaller than you think, and the risks are larger than most homeowners realize. In To...
My electric stove burner only heats on high and won't simmer — is this a wiring issue or the stove itself?
This is almost certainly a problem with the stove itself — specifically the infinite switch (burner control switch) — ra...
Should I replace just the breaker or the entire panel if I keep getting a burning smell from one slot?
A burning smell from a specific breaker slot is a serious fire hazard — stop using that circuit immediately and have a l...
How much should I budget for permit fees and ESA inspection costs when rewiring in Ontario?
ESA permit fees for a residential rewire in Ontario typically run $200–$600 for most homes, though larger or more comple...
What happens to my standby generator if natural gas service is interrupted during a major Toronto ice storm?
If natural gas service is interrupted during a Toronto ice storm, your standby generator stops working — full stop. Natu...
Are there condo bylaws in Toronto that restrict the type of lighting fixtures I can install in my unit?
Condo bylaws in Toronto rarely restrict the specific type of lighting fixtures you install inside your unit, but there a...
Is it safe for me to replace a ceiling fan motor myself or should I call an electrician?
Replacing a ceiling fan motor is a grey area — it depends on what exactly you're doing, and the answer changes significa...
What should I do if I smell ozone or a fishy odour near an outlet or light switch?
A fishy or ozone smell near an outlet or switch is a serious warning sign of an electrical fault — stop using that outle...
What gauge wire and breaker size do I need for permanent outdoor string lights on my pergola?
For permanent outdoor string lights on a pergola, you'll need a dedicated 15A circuit using 14/2 NMD90 wire — but becaus...
How much does it typically cost for an electrician to diagnose a phantom load drawing power in my Toronto home?
Diagnosing a phantom load in a Toronto home typically costs $150–$350 for a standard service call, which usually include...
What's the cost to wire a detached laneway suite for full electrical service in Toronto?
Wiring a detached laneway suite in Toronto typically runs $8,000–$18,000 for a complete electrical installation, dependi...
What size portable generator do I need to keep my fridge and sump pump running during a power outage?
For most GTA homes, a 3,500–5,000 watt portable generator will keep your fridge and sump pump running during a power out...
What size and spacing of potlights works best for a long narrow hallway in a Roncesvalles home?
For a long narrow hallway, 4-inch potlights spaced 6 to 8 feet apart in a single centred row is the standard approach —...
What's the total cost including permits to rewire a 1950s Beaches bungalow with a panel upgrade?
A full rewire plus panel upgrade on a 1950s Beaches bungalow will typically run $15,000–$25,000 all-in, including ESA pe...
Why do some outlets in my house work but have no ground when I test them with a plug tester?
Your outlets are showing no ground because the circuits feeding them were wired without a ground conductor — this is ext...
How much does it cost to move an outlet from one wall to another during a kitchen renovation in the GTA?
Moving an outlet during a kitchen renovation in the GTA typically costs $300–$600 for a straightforward relocation on an...
Can I install a switch with a built-in occupancy sensor in my North York garage to save on hydro?
Yes, you can replace an existing garage light switch with an occupancy sensor switch — and it's one of the smarter energ...
What happens if I bought a Toronto home and discover the previous owner did unpermitted electrical work?
Unpermitted electrical work is one of the most common and costly surprises GTA homeowners face after closing — and it's...
Do I need a load calculation before adding an EV charger circuit to my existing 200 amp panel in Vaughan?
Yes, a load calculation is strongly recommended before adding an EV charger circuit — even with a 200A panel. A 200A ser...
What LED driver or transformer do I need for under-cabinet puck lights in my Vaughan kitchen?
For most under-cabinet puck lights in a Vaughan kitchen, you need a low-voltage DC driver — typically a 12V or 24V const...
What should I do if my basement floods and water reaches the electrical panel or outlets?
If your basement is flooded and water has reached your electrical panel or outlets, do not enter the flooded area — trea...
Can I live in my Mississauga home while the electrician rewires the main floor and basement?
Yes, you can typically remain in your home during a main floor and basement rewire — but it requires planning, flexibili...
How do electricians fish new wires through plaster and lath walls in older Annex homes without destroying them?
Fishing wire through plaster and lath walls in older homes is one of the most skill-intensive parts of residential elect...
How much does it cost to upgrade the electrical in a Toronto semi-detached before selling?
For a typical Toronto semi-detached, pre-sale electrical upgrades run anywhere from $500 for minor compliance fixes to $...
How do I prepare my Toronto home's electrical system for a major renovation without surprises?
Start with a full electrical assessment before a single wall comes down — this is the single most important step in avoi...
How much extra does the ESA charge for a re-inspection if my panel upgrade fails the first time?
The ESA doesn't publish a flat re-inspection fee that's separate from your original permit — re-inspection fees are buil...
What are the most common electrical code violations found during ESA inspections in Ontario?
The most common ESA inspection failures in Ontario come down to a handful of recurring issues that show up in homes acro...
What should I do if a tree branch falls on the electrical service line coming into my Toronto house?
If a tree branch falls on your electrical service line, treat it as a life-threatening emergency and do not touch anythi...
What's the realistic cost to install an EV charger in an older Toronto home that needs a panel upgrade first?
For an older Toronto home that needs both a panel upgrade and EV charger installation, budget $4,500–$8,000 total — and...
Do I need an ESA permit to replace my electric water heater with a new one in the same location?
Yes, you need an ESA permit to replace an electric water heater in Ontario, even if it's going in the same location with...
Have Your Own Question?
Get free, instant answers from Electric IQ. No signup required!
Ask Free QuestionFind an Electrician
Get matched with experienced electrical service contractors in the Greater Toronto Area.
Find an Electrician