A 200 amp service upgrade replaces the electrical backbone of your home: new meter base, new service entrance cables, and a modern breaker panel with the capacity to run everything from central air to a Level 2 EV charger — without constantly managing what’s on and what’s off.
Planning a renovation, adding a secondary suite, or installing an EV charger? A service upgrade is usually the project that makes everything else possible.
Signs You May Need a 200 Amp Upgrade
- Breakers trip when multiple appliances run at once.
- Flickering or dimming lights when a compressor kicks on.
- No available breaker spaces.
- Double-tapped breakers.
- Fuse box still in service.
- Warm or discoloured cover plates.
- You’re planning a renovation or additional unit.
Quick check: Open your panel door. If every slot is full, you see two wires crammed under a single breaker, or you’re still replacing glass fuses — it’s time to talk about an upgrade.
Why Toronto Homes Run Out of Capacity
Secondary Suites and Basement Apartments
The 2024 Ontario Building Code makes multiplex conversions easier than ever — but each unit needs its own circuits and often its own metering.
EV Chargers
A Level 2 charger needs a dedicated 240V circuit drawing 40+ amps.
Heat Pumps
Cold-climate heat pumps with electric backup draw 30 to 60 amps.
Kitchen Renovations
Modern kitchens need significantly more dedicated circuits than older homes were designed for.
Hot Tubs, Additions, and Detached Garages
Detached structures and modern additions require proper feeders and subpanels.
What a Service Upgrade Actually Involves
| Component | What Happens |
|---|---|
| Meter base | 100-amp enclosure replaced with 200-amp rated base |
| Service entrance cables | Conductors upsized for higher capacity |
| Service mast / weatherhead | Replaced if required |
| Main breaker panel | Modern 200-amp load centre installed |
| Grounding & bonding | Updated to current OESC requirements |
| Permits & inspections | ESA permit, Hydro disconnect/reconnect, ESA inspection |
Timeline
On-site work is usually one to two days. Toronto Hydro scheduling and ESA inspection can add additional lead time.
Your power will be off for one full day (sometimes two) during the upgrade.
Older Toronto Homes: What We See on Site
Toronto neighbourhoods like East York, Leslieville, the Danforth, High Park, the Junction, and Roncesvalles are full of older electrical systems.
Common Issues We Encounter
- 60-amp fuse panels
- Full 100-amp panels
- Aluminum wiring
- Federal Pioneer panels
- Finished basements complicating wiring access
Real-world example: A typical East York semi with a finished basement, 100-amp Federal Pioneer panel, and aluminum wiring. The homeowner wants a heat pump and EV charger. The panel is full and the breakers are obsolete. A 200-amp upgrade resolves the capacity and safety concerns at the same time.
EV Chargers, Heat Pumps, and the Capacity Question
Can you add an EV charger on 100-amp service? Sometimes. But many older Toronto homes are already close to their service limits.
A Level 2 charger on a 48-amp circuit is treated as a continuous load under the OESC.
Smart load management systems recognized under OESC Rule 8-500 can sometimes avoid a full upgrade, but not always.
A proper load calculation determines the correct path forward.
[IMAGE BLOCK — EVEMS / load management device]
Panel Upgrade vs. Service Upgrade vs. Subpanel
| Type | What It Is | What It Does |
|---|---|---|
| Panel upgrade | Replace interior panel | Same service capacity |
| Service upgrade | Replace entire electrical service | Increases total capacity |
| Subpanel | Secondary distribution panel | Adds breaker spaces only |
A subpanel does not increase total service capacity.
What Affects the Cost of a 200 Amp Upgrade
| Factor | Impact |
|---|---|
| Overhead vs underground service | Underground services increase complexity |
| Mast replacement | Adds labour and coordination |
| Finished basement | Harder wiring access |
| Panel relocation | Increases project scope |
| Meter base location | May require relocation |
| Aluminum wiring remediation | Additional corrective work |
| Toronto Hydro requirements | Utility-side upgrades possible |
| Permit and inspection fees | Scope-dependent |
💬 The most accurate way to understand cost is a site visit and service assessment.
ESA, Toronto Hydro, and the Permit Process
ESA
The Electrical Safety Authority issues permits and inspects completed work.
Toronto Hydro
Toronto Hydro disconnects and reconnects the electrical service during the upgrade.
All service upgrade work in Ontario must comply with the current OESC.
Common Questions
How long does a 200 amp upgrade take?
One to two days on-site. Total scheduling timeline is usually one to three weeks.
Can I keep my existing panel?
Sometimes — but many older homes require a full service upgrade.
Does my insurance company need to know?
Usually yes. Many insurers require outdated panels or fuse systems to be upgraded.
Why do some projects need a load calculation?
Load calculations are required for many secondary suite, EV, and multiplex projects.
Why Homeowners Upgrade to 200 Amps
- Renovation readiness
- EV charger compatibility
- Insurance compliance
- Improved resale value
- Future-proofing
- Peace of mind
Why Toro Electric
ESA Licensed · Toronto Panel Specialists · Serving the GTA
- Focused expertise in panel and service upgrades
- OESC and ESA compliance knowledge
- Experience with older Toronto housing stock
We had an older East York semi with a Federal Pioneer panel and no room for an EV charger. Toro handled the ESA permit and Hydro coordination and upgraded us to 200 amps in two days.”
Related Services
- EV Energy Management Systems
- Subpanel Installation
- Electrical Panel Repair
- Fuse Box Upgrade
- Secondary Suite Subpanel Installation
- OESC Load Calculations
Ready to Upgrade Your Service?
If your panel is full, your fuses keep blowing, or your next project needs more power than your home can deliver — a 200 amp service upgrade is the foundation that makes everything else work.
Toro Electric specializes in panel and service upgrades across Toronto — from older East York semis to multiplex conversions in the Junction.
We handle ESA permits, coordinate with Toronto Hydro, and build to current OESC standards.
Call Toro Electric: (437) 529-5018