Safe identification
What amp service does my home have?
Safely identify the service-size clues that are already visible—without opening electrical equipment.
Short answer
The largest breaker that is already visible on the panel face often provides a useful clue, but it is not the only service-rating evidence. If the number is unclear, report the service as unknown and let a qualified contractor verify it.
Key takeaways
01Never remove a panel cover.
02Do not pull a meter or break a utility seal.
03A panel label and a main-breaker number can still require professional interpretation.
Where to look safely
Start with equipment that is already visible: the panel door label, the largest visible breaker and the meter/service arrangement outside. Photograph only closed, accessible equipment.
Why the number can be misleading
A replacement panel may have a rating that differs from the service available to the property. Multiple mains, split-bus equipment, condos and multi-unit properties also need specialist interpretation.
What to send an electrician
Provide a closed-panel photo, the main-breaker area without touching anything, the meter area from a safe distance and the equipment you plan to add.
Decision table
What the evidence changes
- Visible clue
- Largest visible main-breaker number
- Needs verification
- Panel rating, service conductors, meter base and utility supply
- If uncertain
- Select “unknown” in the Capacity Check
Typical project sequence
From question to documented work
- 01Observe only closed equipment
- 02Record visible labels
- 03Use the Capacity Check
- 04Request professional verification
Sequence and responsibilities vary by jurisdiction, utility and scope.
Evidence
Sources and verification
Published by the 200AmpPanel.ca Research Team, a HAUSE specialist property. Updated 2026-08-31.
Questions
Frequently asked
Can the panel label tell me the service size?
It may show the panel’s equipment rating, which is not always the same as the property’s available service. Confirm before relying on it.
What should I do next?
Use the Capacity Check to organize what you know, then have a qualified electrical contractor complete the assessment required for the property and jurisdiction.
HAUSE Capacity Check
Start with what your home needs to support.
Get a transparent electrical-capacity pre-check before deciding whether to retain, manage or upgrade the service.