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Comparison Guide

100 Amp vs 200 Amp Panel

Which electrical panel does your home need? A licensed electrician breaks down the differences, costs, and when it is time to upgrade.

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Side-by-Side Comparison

100 Amp Panel

  • — Standard in homes built before 1980
  • — Supports basic household loads
  • — May not support EV chargers
  • — Limited capacity for renovations
  • — Often paired with fuse boxes
  • — May require upgrade for insurance

200 Amp Panel

Recommended
  • Modern standard for Ontario homes
  • Supports EV chargers, hot tubs, A/C
  • Room for future additions
  • Required for most new construction
  • Higher resale value
  • Meets current ESA code requirements

Signs You Need to Upgrade

Breakers trip frequently or fuses blow
You still have a fuse panel (not breakers)
Lights flicker when appliances turn on
You are adding an EV charger, hot tub, or A/C
You are renovating or finishing a basement
Your insurance company is requesting an upgrade
You have aluminum wiring (pre-1975 home)
You are adding a home office or workshop

Common Questions

Is 100 amp service enough for a modern home?
For smaller homes without electric heating, EV chargers, or major appliances, 100 amps may be sufficient. However, most modern homes with central air, electric dryers, and any future plans for an EV charger or hot tub will benefit from 200 amp service.
How much does a panel upgrade cost in Ontario?
A 100A to 200A panel upgrade in Hamilton and the Niagara region typically costs between $3,500 and $5,500, including ESA permit and inspection. The exact price depends on your homes existing wiring, meter base condition, and utility requirements.
Do I need a permit to upgrade my electrical panel?
Yes. In Ontario, all electrical panel upgrades require an ESA (Electrical Safety Authority) permit and inspection. At Remarkable Electric, we include all permits and inspections in our quoted price.
How long does a panel upgrade take?
Most residential panel upgrades are completed in one day. Your power will be off for 4-6 hours during the swap. We coordinate with your utility company for the meter disconnect and reconnect.

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Hamilton, Niagara & Southern Ontario

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Mon–Sat: 24 Hours

Sun: By Emergency Appointment Only

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