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Seattle · Eastside · Marysville to Tacoma206-251-1492
TRUE WIREELECTRIC

Subpanels & Feeder Circuits

Feeder replacement / upsizing

Replace an undersized or damaged feeder and update terminations and protection.

What this service involves

Replace an undersized or damaged feeder and update terminations and protection.

Typical scope and limits: Approximately 25–50 ft accessible run. Existing equipment must accept the new rating.

Who usually needs it

Homes that need more breaker spaces near a garage, addition, workshop or detached building, or where a main panel is full.

Estimated pricing

$1,350–$3,600 per feeder

Priced per feeder. This is a planning range, not a quote.

Project ranges include labor and standard installation materials unless a listing says otherwise. Hourly rates are labor only, and equipment you supply (such as chargers, fixtures or fans) is not included. Permit fees and sales tax are additional. Estimates are free, including on-site visits.

Electrical work may require openings in walls or ceilings. Drywall patching, texture, and painting are not included and must be arranged with others.

What an electrician evaluates first

  • Main panel capacity and available space for a feeder breaker
  • Distance and route to the subpanel location
  • Whether the subpanel is in the same building or a separate structure
  • Planned loads at the new location

Typical work sequence

  1. Confirm loads and location
  2. Plan feeder size and route
  3. Install the feeder and subpanel
  4. Connect new or relocated circuits
  5. Inspection and labeling

Access and disruption

Feeder routes may pass through attics, crawlspaces, garages or underground. Finished walls along the route can need openings.

Permits and inspection

New circuits, equipment changes and most wiring alterations normally need an electrical permit and inspection. In Washington, Labor & Industries issues electrical permits except in cities that run their own electrical program, so the permitting authority depends on the property address rather than the mailing city. True confirms the correct authority before work starts. Permit fees are additional to the estimate.

Helpful, safe photos

The closed main panel, the proposed subpanel location and the path between them. Only photograph what is safely visible — never remove electrical covers.

Related True Wire work

Photos from related projects; they are not necessarily this exact service.

Closed gray electrical panel enclosure on a finished wall
Closed panel · finished wall
Electrical panel and cable routes during open-wall construction
Panel installation · open framing

Questions

Does a subpanel increase my electrical capacity?

No. It distributes power from the existing service. Whether the service can support the added loads is checked with a load calculation.

Is a detached building different?

Yes. Separate structures have their own disconnect and grounding considerations, and trenching may be needed.

Not sure what you need?

Send a photo. Ask a certified electrician.

Not sure what you need? Send a photo and tell True what’s going on or what you’d like to change. Get help understanding your options and the next step.

Tell True about your project

What happens next

Tell us what you’re working on. True will review your request and respond by your preferred contact method. Together, we’ll determine whether the next step is advice based on your photos, a visit, or an estimate. Estimates are free, including on-site visits.

Have a question or a project in mind? Send a few details and choose how you’d like to hear back.

How would you like to hear back? *
Photos (optional, up to 6)

Photograph only what’s visible. Never remove electrical covers or touch exposed wiring for a photo. JPG, PNG, WEBP or HEIC, up to 8 MB each.

Electrical work may require openings in walls or ceilings. Drywall patching, texture, and painting are not included and must be arranged with others.

No account, budget, or street address needed.

Related subpanels & feeder circuits