Panel Upgrades & Rewiring
200-amp service upgrades, fuse box replacement and whole-home rewiring, permitted and inspected.
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Residential electricalResidential
Residential
Electricians.
Electricians for homes across O'Fallon, St. Charles, St. Peters, Wentzville and the rest of St. Charles County. Panel upgrades, EV chargers, generators, lighting, rewiring and repairs — quoted at a fixed price and inspected when the code requires it.
Home electrical servicesEverything from a dead outlet
Everything from a dead outlet
to a full service upgrade.
Six areas cover almost every residential call we take. If what you need is not on this list, it is still worth a phone call — most of what we do falls somewhere inside these.
EV Charger Installation
Level 2 home charging installed on a dedicated circuit, sized by a real load calculation.
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Standby Generators
Automatic standby generators and transfer switches so the house rides through an outage.
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Lighting & Fixtures
Recessed cans, under-cabinet, landscape and fixture work, wired for dimming that actually works.
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Repairs & Troubleshooting
Dead outlets, tripping breakers, flickering lights — diagnosed to the root cause, not guessed at.
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Remodels & Additions
Kitchen, basement and addition wiring from rough-in through trim-out, permits included.
Learn moreHomes in St. Charles CountyThe wiring in your house
The wiring in your house
was sized for 1985.
A household in the mid-1980s ran a fridge, a TV, a washer and a dryer. A household now runs all of that plus a heat pump, a home office, a finished basement, an induction range and increasingly a car. The panel in the garage did not grow to match.
That mismatch is behind most of the residential calls we take. Breakers that trip when two things run at once, lights that dim when the air conditioning starts, a panel with no space left for one more circuit — these are not random faults. They are a service being asked to do more than it was designed for.
The fix is not always a service upgrade. Sometimes it is a sub-panel, sometimes a dedicated circuit for the one appliance causing the problem, sometimes a load-management device that costs a fraction of a full upgrade. Which one is right comes out of a load calculation, not a sales pitch. We run the calculation first and then tell you what the options actually are.
Older homes — the ones around historic St. Charles, Old Town O'Fallon and Frenchtown — carry a different set of issues: knob-and-tube, cloth insulation, ungrounded receptacles and panels that have been added to rather than replaced for half a century. Those are worth addressing, and they are usually worth addressing in stages so the house stays livable and the cost stays predictable.
What homeowners call us about
- Breakers that trip when two appliances run together
- Adding a 240V circuit for an EV charger or a hot tub
- Replacing a Federal Pacific, Zinsco or fuse panel
- Outlets or a whole room that suddenly went dead
- Recessed lighting through an existing ceiling
- Grounding two-prong outlets in an older home
- Finishing a basement to code the first time
- Standby generator so the sump pump keeps running
- Ceiling fans on boxes that were never fan-rated
- Aluminum wiring remediation at the terminations
- Whole-home surge protection at the panel
- Correcting a previous owner's weekend project
QuestionsBefore you
Before you
call us.
The things homeowners ask most often, answered properly.
No. We come out, look at the actual conditions and give you a fixed written price for the defined scope. There is no charge and no obligation to book the work.
For urgent problems — burning smells, sparking, a dead service — we keep after-hours availability and aim for same-day. Planned work like a panel upgrade or an EV charger is usually scheduled within the week.
Yes. APEX Electric carries general liability and workers' compensation coverage, and we can provide a certificate of insurance on request.
For new circuits, a service change or a panel replacement, yes — every municipality in St. Charles County requires one. The permit gets pulled and we meet the inspector on site. Simple repairs and fixture swaps generally do not require a permit.
Not automatically, but it is worth knowing what you have. Knob-and-tube, cloth-insulated conductors, ungrounded receptacles, aluminum branch wiring and recalled panel brands like Federal Pacific and Zinsco are all worth addressing. We can assess and tell you honestly what is urgent and what can wait.
Yes, and it is a large part of what we do. We work through inspection findings, correct them to code and provide the documentation your buyer, seller, agent or insurer needs.
Drop cloths go down before we start, debris leaves with us, and the panel gets a properly labeled directory. You should not be able to tell we were there apart from the work itself.
Where we workSt. Charles County
St. Charles County
and next door.
We are based in O'Fallon, so most of the county is inside a twenty-minute drive. That is what makes same-day response on urgent calls realistic rather than aspirational.
Book a residential electrician.
Free estimates on home electrical work across St. Charles County. Tell us what is going on and we will tell you what it needs.
Get started
Get a free home estimate
Send the details of what you need and we will come back the same business day with next steps.
Call us(660) 342-5886
- Office
- 105 Hawks Haven Dr.O'Fallon, MO 63368By appointment — we come to you for estimates.
- Hours
- Monday – Friday7:00 AM – 6:00 PMSaturdayBy appointmentEmergency service24 / 7
- Emergencies
- Burning smell, sparking, a dead service or water near electrical equipment — call the main number any hour.
- Service area
- O'Fallon · St. Charles · St. Peters · Wentzville · Lake Saint Louis · Cottleville · Dardenne Prairie · Chesterfield
Get in touch
Call or email us
The fastest way to get an estimate is a phone call. Tell us what is going on and we will tell you what it needs, what it costs and when we can be there.
Helpful to include
- What is happening, and roughly when it started
- Home or business, and the town
- A photo of the panel or the problem
- When you are usually available
Monday – Friday: 7:00 AM – 6:00 PM. Emergency service available 24/7 — call the main number any hour.
Would rather just talk to someone? Call (660) 342-5886 — for anything urgent that is the fastest route.