Electrical Panel Upgrade Tualatin, OR

Assessment & Load Calculation

Every electrical panel upgrade starts with a walk-through, not a quote pulled from a phone call with a Beaverton electrician. We check the age and condition of the existing panel, note whether it's a Federal Pacific or Zinsco unit (both have documented circuit breaker failure issues common in Tualatin's older homes), and look at the wiring feeding it. From there we run a load calculation: what the house draws now across HVAC, kitchen circuits, and major appliances, plus what you're planning to add, whether that's an EV charger, a hot tub, or a whole-home generator.

That number determines the size of the new service. Most mid-size Tualatin homes land at 200 amps, especially with homes carrying a shop, a pool, or multiple large additions. We'd rather size it once for where the house is headed than have you calling again in three years when the next addition maxes it out.

We also flag anything that'll come up at inspection before it becomes a surprise mid-project: aluminum branch wiring, undersized grounding, double-tapped breakers, or a meter base that needs replacing alongside the panel. None of that shows up on a drive-by estimate. It shows up when someone actually opens the panel and traces the runs.

By the end of this step, you've got a specific panel size, a list of anything else the job needs to pass inspection, and a written estimate with those line items on it, not a range that could mean almost anything once the wall's open.

Permitting & Utility Coordination

Once the panel size is set, we file the permit through Washington County, since electrical permits and inspections for Tualatin properties run through the county rather than the city. That distinction trips up a lot of homeowners who call the wrong office first. We handle the application, the fee, and the plan details so it's off your plate.

This phase is mostly paperwork and scheduling, but it's the part that determines whether the physical install goes smoothly or turns into a stop-and-start process waiting on county sign-off. We've done this enough times across Washington County to know which details the inspector checks first.

Installation & Final Inspection

With power off at the meter, the old panel comes out. The new enclosure gets mounted, grounded, and bonded to current code, and every circuit gets landed and labeled in the new box one at a time, checked against the original wiring as we go instead of copied blind from the old layout.

This is also where dedicated circuits for an EV charger, hot tub, or generator transfer switch get added if they're part of the job, since running them during the panel swap avoids opening the box twice. Circuit restoration happens here too, for older runs that need attention before the new panel goes live.

Once everything's landed, we call for the rough-in inspection before anything gets closed up, then the final inspection once the county signs off. Power gets restored, and we test every breaker under load rather than just flipping them and walking away. Before we leave, we walk you through the new panel, label the directory clearly, and point out anything worth knowing for the next few years.

Most jobs, from disconnect to restored power, run a half day to a full day depending on service size and how much needs replacing behind the panel. Cleanup includes hauling off the old panel and any damaged wiring we pulled during the swap, so you're not left with a pile of retired electrical equipment in the garage.