Will Your Panel Take An EV Charger? How The Maths Actually Works
It is a load calculation, not a guess about amps. What gets counted, what does not, and why the answer is sometimes yes on a panel that looks full.
Conductors dressed square, breakers labelled properly, and a schedule the next electrician can read. Done so an inspector has nothing to say.
Panels, chargers, lighting and rewires, finished to a standard that only shows when somebody opens the cover.

More capacity, modern breakers and a panel that is actually labelled — usually the job every other job is waiting on.
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Load calculated first, so you find out what your house supports before the car arrives rather than after.
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The breaker that trips, the outlet that is warm, the light that flickers. We find the cause, not just the symptom.
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Recessed lighting, under-cabinet, outdoor and switching that makes sense — laid out before anything is cut.
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Knob-and-tube, aluminium and cloth-covered wiring replaced in stages, so you keep living in the house while we do it.
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Standby generators and transfer switches, sized to what you actually want running when the power goes.
Learn moreNot just at the thing you called about — at the panel, the load and how the house is fed. Most electrical problems are somewhere other than where you noticed them.
In writing, before we start, including the permit. If the honest answer is that it can wait, we will say so and you can call us in a year.
We file it, and the work is scheduled around the inspection rather than hoping nobody asks. This is the part that matters when you sell.
Conductors dressed, breakers labelled properly, and a panel schedule the next electrician can read.
We meet the inspector, and you get the paperwork. A job with no record is a job you have to explain later.
BeforeAfter
Drag the slider. Same wall and the same house — an overloaded fuse box replaced with a panel that has capacity, a permit and a legible schedule.
"I'd been resetting the same breaker for two years and assumed I'd get lectured about it. Instead they traced it to a junction box in the attic that a previous owner had buried behind insulation, and fixed it in an afternoon."
"Asked about a charger before buying the car. They ran the load calculation, told me the panel would take it without an upgrade, and charged me for the visit rather than selling me a panel I didn't need."
"1948 house, three generations of wiring, nobody else would quote it. They mapped what was actually there first, staged it over three visits, and pulled permits for all of it. The inspector said it was the tidiest panel he'd seen that month."
"I'd been resetting the same breaker for two years and assumed I'd get lectured about it. Instead they traced it to a junction box in the attic that a previous owner had buried behind insulation, and fixed it in an afternoon."
"Asked about a charger before buying the car. They ran the load calculation, told me the panel would take it without an upgrade, and charged me for the visit rather than selling me a panel I didn't need."
"1948 house, three generations of wiring, nobody else would quote it. They mapped what was actually there first, staged it over three visits, and pulled permits for all of it. The inspector said it was the tidiest panel he'd seen that month."
Most of our work is in Washington County and the neighborhoods around it. Older housing stock is a large part of what we do, so if your house still has a fuse box or wiring nobody has looked at in forty years, that is a normal call and not an embarrassing one.
Switch that circuit off at the panel if you can reach it safely, or the main if you cannot. If there is smoke, visible fire or a smell that will not clear, get out and call 911 — not us first. Once it is safe, call and we will come and find the cause. This is the one situation where a website is not the right tool.
That is a load calculation, not a guess, and it is the most common question we get. We work out what the house actually draws against what the service can deliver, and tell you plainly whether you need an upgrade first. Sometimes the answer is no, and that is a cheaper day for you.
Usually because it is doing its job. It is either too much load on one circuit, a fault in something plugged into it, or a problem in the wiring itself — and those are three very different repairs. Repeatedly resetting it is the one response worth avoiding.
For most work beyond swapping a fixture, yes. It gets missed a lot, and it surfaces at the worst moment — during a sale, or in an insurance claim after something goes wrong. We include the permit in the price rather than offering it as an upgrade.
Not automatically. Intact knob-and-tube that has not been buried in insulation or extended with modern circuits can be fine for now; the danger is in what has been done to it since. We will look and tell you whether it is a this-year job or a plan-for-it job.
Usually most of it. Fishing cable through existing walls, using attics and crawlspaces and grouping the unavoidable openings is a large part of the skill. You will see where we have to open up before we start, not after.
Yes — CCB #187553, bonded and carrying full liability and workers' comp coverage. Worth asking every electrician you call, and worth checking the number rather than taking it on trust.
Beaverton, Aloha, Tigard, Hillsboro, Tualatin, Cedar Mill, Raleigh Hills, and Portland.
Written for homeowners deciding whether something is urgent, which is usually the only question they actually have.
EV Charging
It is a load calculation, not a guess about amps. What gets counted, what does not, and why the answer is sometimes yes on a panel that looks full.
Troubleshooting
Too much load, a faulty appliance, or a fault in the wiring — three very different repairs that look identical from the panel door.
Old Homes
Intact original wiring is not automatically dangerous. What makes it dangerous is almost always what somebody added to it later.
Bring us the house nobody wants to quote — the additions, the three generations of wiring, the panel with no labels. We will map what is actually there and price it properly.
This is a demonstration. A working version — answering from your own services and prices, day or night — is included with every Atlas9 site.