YOUR HOME. THE RIGHT ELECTRICAL SCOPE.

400-amp service upgrades in Olympia & Tumwater

A larger home electrical project needs a capacity plan before equipment is selected. Review simultaneous loads, service configuration and the utility connection together.

Explore panel budgets Find your local guide

Illustrative residential garage with a closed electrical panel and meter equipment

Your project starts here

Olympia + Tumwater

Explore a panel budget, or use the regular form.

What do you need? Panel / service size (optional) Electric utility (optional; from your bill) Your nameProject ZIPPhone

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Project address (optional)

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Tell us about the work

A request is for project review. Contractor availability and an appointment are not confirmed.

THE DIRECT ANSWER

400-amp service upgrade: what should the work achieve?

A 400-amp service is a project-specific design choice. Home size, EV ownership or a neighborhood name alone does not establish that a home needs it.

Define demand first

Include planned heating, multiple charging loads, shops, outbuildings and other substantial equipment in the professional load assessment. State what must operate at the same time.

Resolve utility feasibility

Confirm available utility capacity, meter/service configuration, equipment acceptance and any required engineering. Trenching, relocation or utility-side construction can change both budget and timing.

Write the cutover plan

Identify permits, inspections, shutoff/reconnection responsibilities and temporary access needs. Ask which utility charges, site restoration and finish work are excluded.

Project guidance near you

Olympia Tumwater West Olympia Eastside Olympia Black Lake / Lamberts Corner

A PRACTICAL NEXT STEP

Get an estimate
for your home.

Tell us what needs attention, where the home is and which improvements you have in mind.

Describe the workLocation, equipment and the outcome you want.
Review the projectThe existing system and proposed work need an electrician’s assessment.
Agree the detailsConfirm scope, price and schedule directly with your chosen contractor.

This form is for project review, not emergency dispatch. For fire, smoke or immediate danger, call 911. Keep clear of damaged service equipment and use your utility’s official emergency channel.

Request an electrical estimate