If your business runs motors, compressors, HVAC rooftop units, elevators, or large kitchen and shop equipment, single-phase power often can't keep up. Three-phase power delivers a steadier, more efficient supply for heavy and continuous loads, which usually means smaller conductors, less voltage drop, and longer equipment life. As a licensed and insured electrical contractor, we install and upgrade three-phase services for businesses across Toronto and eight surrounding municipalities. Our work spans new three-phase service entrances, panel and distribution upgrades, sub-panels, feeders, disconnects, and dedicated circuits for specific machines. We coordinate with your local utility on the service size and metering, and we file the required ESA notification so the installation is inspected and documented properly. Whether you're moving into a new unit, adding a piece of equipment that needs 208V or 600V three-phase, or outgrowing an existing service, we scope the load honestly and build the system to handle it. We work around your hours to limit downtime and keep your operation running.
What's included
- New three-phase service entrance installation and utility coordination
- Three-phase panel, distribution, and sub-panel upgrades
- Feeders, disconnects, and dedicated circuits for motor and equipment loads
- 208V, 480V, and 600V configurations matched to your equipment
- Motor circuits, starters, VFD power feeds, and overload protection
- Load calculations and capacity planning before you buy equipment
- ESA notification, inspection coordination, and documentation
- Phase balancing, voltage-drop correction, and tenant fit-out wiring
Signs you may need this service
- New equipment is rated for three-phase but your unit only has single-phase
- Motors run hot, trip breakers, or start sluggishly under load
- Frequent nuisance tripping or visible lights dimming when machines start
- You're adding HVAC, compressors, or production equipment that exceeds current capacity
- Voltage drop or imbalance is causing equipment faults at the far end of long runs
- Your panel or service is full and there's no room to add the loads you need
How we work with businesses
We start with a site visit and a real load calculation, not a guess. We look at your existing service, the equipment you're adding, conductor runs, and how the utility feeds your building. From there we confirm whether you need a service upgrade, a new sub-panel, or just dedicated three-phase circuits. We coordinate with the utility on service size, metering, and any transformer requirements, and we file the ESA notification so the job is inspected and on record. For occupied spaces, we schedule shutdowns around your operating hours and stage the work to minimize downtime. You get clear updates at each stage, and we leave you with labeled panels and documentation your property manager, insurer, or next contractor can actually use.
Cost & scoping
Three-phase pricing varies widely because no two services are alike. The main drivers are whether the utility already brings three-phase to your building, the service size you need, the distance and size of feeders, panel and disconnect requirements, and how much existing infrastructure can be reused. A few dedicated circuits off an existing three-phase panel is a modest job; a full new service entrance with utility upgrades and a new distribution panel is a much larger one. We don't quote blind over the phone. After a site visit and load calculation we give you an itemized written estimate, flag anything the utility controls (which can affect timeline and cost), and explain options so you can phase the work if budget matters. Prices vary by scope, site conditions, and current material costs.
Serving the whole GTA
We provide three-phase power installation & upgrades across the Greater Toronto Area. Find your city for local service, or call (289) 799-3802.