Process
Electrical service-upgrade process
A homeowner view of assessment, design, permits, utility coordination, inspection and reconnection.
Short answer
A typical service change moves from assessment and calculation through design, permit, utility coordination, disconnect, installation, inspection, reconnect and documentation. The exact sequence varies by jurisdiction and scope.
Key takeaways
01Permit and utility processes are separate but connected.
02Power-off timing should be planned before installation day.
03Closeout should include permits, inspection status and equipment documentation.
Before work
The contractor confirms the existing service, calculates demand, defines equipment and identifies permit and utility requirements.
Installation day
Where required, the serving utility coordinates disconnection. The contractor completes the approved scope and the authority inspects according to local procedure.
After reconnection
The homeowner should receive the written scope, invoice, applicable permit/inspection records, equipment information and warranty details.
Decision table
What the evidence changes
- Homeowner role
- Provide access, equipment plans and decision approvals
- Contractor role
- Design, permits, installation and coordination
- Authority / utility
- Inspection, service procedures and supply-side work as applicable
Typical project sequence
From question to documented work
- 01Assess
- 02Calculate
- 03Design
- 04Permit
- 05Coordinate utility
- 06Disconnect
- 07Install
- 08Inspect
- 09Reconnect
- 10Document
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
How long will the power be off?
The outage window depends on the scope, utility procedure, inspection path and site conditions. Ask for a project-specific plan.
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.
Your next step
Bring the right facts to the first conversation.
Record the visible service clue, planned equipment and any relevant documents. The free brief organizes your questions; a qualified person verifies capacity and scope.