Homeowner guide
What Information Helps Us Prepare a Renovation Estimate?
Photos, measurements, access, product choices, and clear project notes help make your estimate request useful.
Service Panel Upgrade (100–200A)
Assessing a Panel or Service Upgrade Before Committing
New equipment or renovation plans can prompt a panel review. Assess the existing electrical demand and utility requirements before choosing a replacement or assuming a larger service is necessary.
Renovation1.ca · Published
Starting condition
The owner is planning new electrical loads or has been told that panel space is limited. The condition and capacity of the existing installation have not yet been assessed for that proposal.
The problem
Available breaker positions do not establish the capacity of the whole service. Replacing a panel without reviewing the proposed loads, service equipment and utility interface can leave the actual constraint unresolved.
What to inspect
- List existing major equipment and proposed additions
- Have the Licensed Electrical Contractor assess electrical demand, panel condition and service equipment
- Review panel location, working access and cable routes
- Confirm utility requirements for any service change
- Identify ESA responsibilities, possible shutdown arrangements and finish impacts
Recommended approach
Renovation1 can coordinate the renovation information and access requirements. A Licensed Electrical Contractor assesses whether panel work, a service change or another compliant approach suits the proposed demand. Obtain the utility requirements and define ESA steps before agreeing to installation; do not select capacity from a photograph alone.
Typical scope
Preparation
- Collect equipment specifications, available records and access details for the assessment
Removal
- Identify any future removals in the proposed installation scope; removal is not included in a planning visit
Installation
- Document the contractor’s recommended equipment scope and utility dependencies for a separate installation estimate
Adjustment
- Revise the proposal if the demand assessment or utility review changes the approach
Finishing
- Identify likely wall, entry-point or mounting-area repairs for inclusion in the installation estimate
Cleanup
- Leave assessment areas orderly and provide the recorded findings
Exclusions
- Equipment replacement, utility construction, electrical repairs and finish restoration are not included in assessment-only scope
Materials
- Existing equipment identification and available electrical records
- Specifications for proposed appliances or charging equipment
- Candidate panel and service-equipment information selected by the contractor
- Installation material list to be confirmed after assessment; no purchase assumed
Work sequence
- Document existing equipment and the proposed electrical additions
- Arrange assessment by a Licensed Electrical Contractor
- Confirm utility involvement and the applicable ESA process
- Compare the feasible scopes and their access or shutdown implications
- Issue a defined installation proposal with outstanding conditions listed
Possible complications
- Planned equipment changes the demand assessment
- Existing service equipment needs work beyond the panel
- The panel location or cable access complicates replacement
- Utility requirements affect the proposed installation sequence
Quality checks
- Recommendation is based on an electrical assessment rather than breaker count alone
- Panel work and service work are distinguished
- Utility and ESA responsibilities are identified
- Equipment, shutdown and finish assumptions are recorded
- The estimate separates confirmed work from unresolved conditions
Expected result
The intended result is a documented upgrade decision and a defined next-step scope. A planning visit does not increase capacity, authorize energization or promise that a service upgrade will be needed.
What changes the scope
- Existing demand and proposed equipment
- Panel and service condition
- Utility requirements
- Location, access and affected finishes
- Extent of assessment and unresolved installation details
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How Should I Prepare My Home Before Renovation Work Starts?
Arrange access, belongings, deliveries and decisions so the agreed work can begin with fewer avoidable interruptions.
Estimate
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