Standby generator installed outside a Toronto-area home by Tron Electrical
Expert Generator & Load Upgrade Specialists
ESA Licence #7016193
Fully Insured & Bonded

Generator & Backup Power Electrical in Toronto & GTA

⭐⭐⭐⭐⭐ 5.0 on Google (500+ reviews) · 4.9/5 on HomeStars (338 reviews) · HomeStars Best of the Best 2023

HomeStars Best Award Winner 2023
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ECRA/ESA Licence #7016193 — Electrical Safety Authority
Google Verified Reviews 5.0
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ESA Licensed • 500+ Reviews • Since 1972

Tron Electrical & Automation handles the electrical side of backup power across Toronto and the GTA — generator connections, transfer equipment, backup circuits, standby generator electrical, portable generator connection systems, and the electrical load assessment that sizes all of it correctly.

Services: Generac • Kohler • Cummins • Briggs & Stratton • ATS install • Load upgrades • Commercial backup

  • ESA Licensed
  • 500+ Five-Star Reviews
  • 50+ Years in the GTA
  • Load Calculation Handled

Request Service or Assessment

Response Within 1 Hour. Premium Service.

Submit and we'll text you right away, reply with photos of your panel or project. We never sell or share your number.

The Three Questions Homeowners Ask Us Most

“Generators seem complicated — is a manual transfer switch enough, or do I need automatic?”

A manual switch is cheaper and works fine if someone's usually home to flip it. An ATS switches automatically within seconds, which matters most for sump pumps, medical equipment, or when you travel. We'll recommend based on your actual risk, not upsell you.

“I already bought a generator online — can you just wire it in cheaply?”

We can wire almost any generator you've purchased, but we'll still do a load calculation and ATS sizing check first — installing a mismatched transfer switch is a common cause of failed backup power. We'll quote it honestly based on what your unit actually needs.

“What if the generator doesn't work when we actually need it during an outage?”

That's why we load-test and commission every system before we leave — simulating a utility outage to confirm the ATS switches over correctly. We don't consider the job done until we've proven it works under real conditions.

What You Actually Get When It's Done

Standby generator installed outside a Toronto-area home by Tron Electrical

Whole-Home Standby Power

Sized, wired, and permitted for real-world critical loads.

Automatic transfer switch installed next to an electrical panel

Seamless Automatic Switchover

ATS commissioned and load-tested before we leave.

Home interior with lights on powered by a backup generator during an outage

Power That Doesn't Fail You

Keep lights, sump pumps, and equipment running through any outage.

⭐⭐⭐⭐⭐ Trusted by GTA homeowners with 500+ five-star Google reviews.

"Tron installed our Generac standby with an ATS in two days — flawless cutover on the next outage. Worth every penny."
P. Whitfield — Oakville
"They sized the load properly and upgraded our panel at the same time. The install is beautifully clean."
R. Lemieux — Kleinburg
"Professional, ESA-permitted, and on schedule. The transfer switch test ran perfectly the first time."
H. Nguyen — Markham
"During the last ice storm our neighbours had no power for four days — ours kicked on in seconds. Best investment for our farm."
G. Andrews — King City
"We needed backup for medical equipment. Tron explained everything clearly and the ATS has never missed a beat."
C. Delacroix — North York
"Commercial three-phase generator install for our shop — Tron handled the load shed panel and ESA inspection without a hitch."
M. Okafor — Vaughan

Never Lose Power When It Matters Most

A poorly wired generator or undersized transfer switch can fail exactly when you need it — during a storm outage, at 2am, with a freezer full of food or medical equipment running.

Tron Electrical has wired standby and portable generator systems across the GTA since 1972 — properly sized, permitted, and commissioned with a real load test, not a rushed install.

Full-service load upgrades included. If your panel needs more capacity to run generator, EV, and HVAC loads together, we handle that in the same project.

Complete Generator Wiring & Load Upgrade Services

Standby Generator Wiring

Whole-home and commercial standby generator hookups — Generac, Kohler, Cummins, Briggs & Stratton and more.

Automatic Transfer Switch (ATS)

Seamless ATS installation that detects utility loss and switches to generator power within seconds.

Manual Transfer Switches

Code-compliant manual transfer switches for portable generators — safe, simple, no backfeeding.

Load Upgrades 100A – 2,000A

Main panel and service upgrades to support generator capacity and modern household or facility loads.

Residential Backup Power

Natural gas, propane and diesel standby systems for homes — clean conduit, weatherproof enclosures.

Commercial & Industrial Backup

Three-phase generator wiring, load shed panels, and ATS systems up to 800A for businesses and facilities.

Generator Connections & Wiring

We handle the electrical connection between the generator and the building: the generator feed and conductors, conduit and routing, disconnects, grounding and bonding, control wiring, and battery charger and block heater circuits. We wire units from the manufacturers commonly installed across the GTA and work alongside the gas fitter and the equipment supplier so the commissioning happens on schedule.

Transfer Equipment

Transfer equipment is what makes backup power safe. We install automatic and manual transfer switches, service-entrance rated transfer equipment, and interlock arrangements, then test the transfer under load in both directions so the changeover works when the outage is real. Transfer equipment is also what prevents backfeeding the utility — the single most dangerous mistake in generator installations.

Backup Circuits & Essential Loads

Whole-building backup is not always the right answer. Where it is not, we build an essential-loads arrangement: heating and cooling controls, sump and sewage pumps, refrigeration, well pumps, medical equipment, lighting, internet and security, and selected receptacle circuits — separated onto backup distribution so the generator carries what actually matters.

Standby Generator Electrical

Permanently installed standby systems for homes, condominiums, offices and commercial properties: pad and mounting coordination, feeders and distribution, automatic transfer, monitoring, and the ESA permit and inspection. We also service and re-commission existing standby installations that were never tested properly or have stopped transferring.

Portable Generator Connection Systems

For homeowners using a portable generator, we install a proper connection system — an inlet box, a transfer switch or interlocked breaker, and a dedicated backup panel — so the generator can be connected safely with a cord instead of through extension cords or, worse, a suicide cord into a receptacle.

Electrical Load Assessment

Before anything is ordered, we assess the electrical load: what the building draws, what needs to stay running, starting loads on motors and compressors, and how that maps onto generator size and transfer equipment rating. Undersized systems trip and overheat; oversized systems cost more than they need to. Where the existing service also needs work, we handle that in the same project.

ESA Licensed · Ranked #1 Electrical Company in Toronto & GTA · 500+ Five-Star Google Reviews · 99% ESA First-Pass Rate · Serving Toronto & GTA Since 1972 · Licensed & Insured

Tron Electrical & Automation takes on jobs of every size — from a single receptacle or breaker to complete service upgrades and multi-site commercial projects.

Why GTA Homeowners Choose Tron for Generator Wiring

  • ESA Licensed
  • 500+ five-star Google reviews
  • Serving Toronto & the GTA since 1972 — family-owned, ESA licensed, and insured
  • Standby & portable generator specialists
  • ATS installation, commissioning & load testing
  • Clean, weatherproof installations
  • Residential, commercial & industrial backup experience
  • Load calculations sized for real-world critical loads

A Reliable Generator Install From Assessment to Commissioning

  1. 1

    Request service or book a generator assessment

  2. 2

    We review your panel, generator type, and critical loads

  3. 3

    We confirm ATS sizing, breaker space, and Hydro requirements

  4. 4

    You receive a clear, transparent quote

  5. 5

    Tron Electrical completes wiring, ATS install & load-tests the system

Built for Homeowners, Farms & Facilities That Can't Afford Downtime

Whether you're protecting a home with medical equipment, a sump pump that can't fail, or a commercial facility with critical operations, Tron Electrical designs and wires a backup power system that actually works when the grid doesn't.

Generator Wiring Across Toronto, Vaughan & the GTA

We wire standby and portable generator systems across Toronto, Vaughan, Oakville, Mississauga, Richmond Hill, Markham, Thornhill, Kleinburg, King City and surrounding GTA communities.

TorontoVaughanNorth YorkEtobicokeScarboroughRichmond HillMarkhamThornhillKleinburgKing CityWoodbridgeMississaugaOakvilleBramptonAuroraMapleConcordUnionville
Common Questions

Generator Wiring Questions Answered

Still have questions? Call 647-492-1989

Ready for Reliable Backup Power?

Call Tron Electrical for a transparent quote, proper load calculation, and a generator system that's permitted, commissioned, and tested before the next outage hits.

  • ESA Licensed
  • 500+ Five-Star Reviews
  • 50+ Years in the GTA
  • Load Calculation Handled
  • ATS Commissioned & Tested
  • Fast Storm-Season Scheduling

Is your panel safe? Send us a photo — a master electrician will tell you.