Home / Charging / Home EV Charging Station Installation
Home EV Charging Station Installation
Two cars eventually means two chargers, which is worth knowing before the first one goes in. The charger is the easy part. Whether the service can carry it alongside the air conditioning and the dryer is the real question.
Home EV Charging Station Installation in O’Fallon and across St. Charles, St. Louis, Lincoln and Warren counties.
Owner-operated: the person who answers the phone is the person who measures it.
5.0 from 94 Google reviews · BBB A+ since 2022
What this work actually involves
The circuit is sized for continuous duty and run on its own breaker, with the disconnect where the code and the inspector expect it.
Nothing gets quoted off a description. The reading comes first, because a symptom has several possible causes at very different prices and only a measurement separates them.
Where a permit and an inspection are required they happen, and the site is left ready for them. One person carries the job from the first call to the final test.
When people call about this
- A charger moved from an old house
- A new EV on order
- A charger that trips mid-session
- A panel with no spare double-pole space
Why people choose Clint for it
One person does the diagnosis and the repair, so nothing is lost between a salesman and a technician, and nobody is paid to sell past the finding.
Seventeen years in the trade, four of them running his own shop, 5.0 from 94 Google reviews, and an A+ BBB accreditation held since 2022.
Where this is done
Out of O’Fallon across five jurisdictions: St. Charles County, St. Louis County, St. Louis City, and Lincoln and Warren counties. About fifty miles in any direction.
See the full service area, or the rest of our ev charging work.
What happens when you change cars
Connectors and charging rates change; the circuit does not. A properly sized 240 volt circuit with the right receptacle outlives several cars, and most of what changes is the unit on the wall.
That argues for a receptacle rather than a hardwired unit where the code and the charger allow it, because swapping a plug-in charger is a ten minute job and swapping a hardwired one is a service call.
Continuous load, and why it changes the maths
Code treats EV charging as a continuous load, which means the circuit is sized at 125 percent of the charger’s rating. A 40 amp charger wants a 50 amp circuit. That single rule explains most of the difference between an EV install and an ordinary outlet.
It also explains why a charger that worked at an old house trips at a new one. The charger did not change; the circuit behind it did.
The three answers before a service upgrade
Charging load is the most common reason a house suddenly looks short on capacity, and a service upgrade is only one of three honest answers. The other two are a smaller charger that still fills the car overnight, and load management that shares capacity with the range or dryer.
The load calculation decides which, and you see it. Both alternatives are code-compliant and both are cheaper than new service.
Designing around the parking spot
Where the car parks decides the run, and the run is often the larger part of the cost. A charger on the far side of a finished garage from the panel is a different job from one on the panel wall.
The circuit is sized for continuous duty, the cable is mounted so it reaches the port with slack, and a test charge happens before anyone leaves.
Permits, inspections and why they vary here
Requirements genuinely differ across this metro. O’Fallon, St. Charles, St. Peters, the St. Louis County municipalities and St. Louis City each run their own process, and what one treats as a minor repair another permits and inspects.
Work that needs a permit gets one, and work that needs an inspection is left ready for it with the panel labeled and the junctions accessible. That matters most before a closing, when an inspector’s written item becomes someone’s negotiating position.
“Infinity came out for same day service after an electric line had been cut in my yard. He was able to locate and correct it very quickly, eliminating any risk of injury or additional power outage.”
Melissa Johnson · Google review
How the visit goes
- The call
Which car, which charger, and where it parks. Those three answers decide most of the install before anyone visits.
- The measurement
A load calculation against the existing service, plus the run from the panel to the parking spot and what it passes through.
- The finding
Either the service carries it, or load management lets it share, or a service upgrade is genuinely needed. You hear which, with the number behind it.
- The work
Dedicated circuit sized for continuous duty, disconnect where the code and the inspector expect it, charger mounted so the cable reaches with slack, and a test charge before anyone leaves.
What the job includes
- Load calculation to confirm the service can carry the charger
- A dedicated circuit sized for continuous duty, on its own breaker
- Charger mounted where the cable reaches the car with slack to spare
- Disconnect where code and the inspector expect it
- Permit and inspection where required
- Conduit for a second charger while the wall is open, if you want it
What it does not
- Supplying the charger itself, unless you ask
- Utility rebate paperwork, though we will tell you what exists
- Charging network accounts and apps
Plumbing, HVAC and structural work get a pointer to someone who does them properly. See the work itself, or send the details.
Related ev charging work
Home EV Charging Station Installation across the metro
Where the house is changes what the work involves. Clint works out of O’Fallon across five jurisdictions, and the same service means different work in each.
St. Louis County
Houses with real history in the walls, and a permit process that changes from one municipality to the next.
St. Louis City
Brick with plaster over lath, party walls that limit where a run can go, and a hundred years of electrical layers in the basement.
Lincoln County
Well and septic loads mean a failure is no water rather than an inconvenience, so those circuits get treated accordingly.
Thirty towns across five jurisdictions, all on the service areas page.
Questions worth asking first.
Can my panel handle a charger?
Often yes. The load calculation checks what the house already runs against the service rating. Where it is tight, load management lets the charger share capacity instead of forcing an upgrade.
Level 1 or Level 2?
Level 1 plugs into a standard outlet and adds a few miles an hour, which suits short commutes. Level 2 needs its own circuit and fills a car overnight. The honest answer depends on your daily miles.
Do I need a 60 amp circuit for a 48 amp charger?
Yes. Charging is a continuous load, so the circuit is sized at 125 percent of the charger’s draw. That is also why dialing the charger back is often what keeps a house off a service upgrade.
Where do you work?
Out of O’Fallon across St. Charles County, St. Louis County, St. Louis City, and Lincoln and Warren counties, roughly a fifty mile radius.
Do you pull permits?
Where the municipality requires one, yes, and the work is left ready for inspection with the panel labeled and junctions accessible. Requirements genuinely differ across this metro, which is why it is established per address rather than assumed.
Talk to the person who will do the work.
No dispatcher, no salesman. Clint takes the call and Clint does the job. Home EV Charging Station Installation in O’Fallon and across the metro.
Weekdays 8-5, Fri to 4, Sat 10-3 · or describe it in writing.