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Fuse Box to Breaker Panel Conversion
A sub-panel solves a space problem; a service upgrade solves a capacity problem. They are not interchangeable. Most panel calls start as something smaller: a breaker that will not reset, a burning smell, an inspector’s note on a sale.
Fuse Box to Breaker Panel Conversion in O’Fallon and across St. Charles, St. Louis, Lincoln and Warren counties.
Clint Ehman does the work himself. Seventeen years in the trade, Infinity Electric since June 2022.
5.0 from 94 Google reviews · BBB A+ since 2022
What this work actually involves
Every circuit is identified and labeled on the directory before the cover goes back on, because the next person in that panel needs to read it.
Clint measures before he quotes. The reading comes first, then what it means, then the one repair that solves it. If the honest answer is smaller than what you called about, that is the answer you get, even when the bigger job pays better.
Work that needs a permit gets one, and work that needs an inspection is left ready for it. One person does the diagnosis and the repair, so nothing is lost between a salesman and a technician.
When people call about this
- Lights that dim when a large appliance starts
- Breakers that trip under normal load
- A panel brand an inspector flags on sight
- Scorch marks, heat or a smell at the cover
Why people choose Clint for it
The diagnosis and the repair are the same person’s work, which is why the explanation you get is first-hand rather than relayed.
Five point zero from 94 Google reviews, A+ with the BBB since December 2022, and seventeen years in the trade behind it.
Where this is done
Thirty towns across five jurisdictions, worked out of O’Fallon. The housing stock and the inspection process both change as you move across them.
See the full service area, or the rest of our panels & service work.
Sub-panel, service upgrade, or neither
These three get confused constantly and they differ by thousands of dollars. A sub-panel adds places to land circuits and is right when the service carries the load but the box is full. A service upgrade raises what the house can draw and is right when the calculation says the service is genuinely at its limit.
Neither is right when the real problem is one overloaded circuit, which is more common than either. The load calculation is what separates the three, and it happens before anything is quoted.
What an inspector is looking at
Inspectors look at terminations, grounding and bonding, breaker compatibility and working clearance. A panel can be the right size and still fail on any one of those.
Breaker brand matters more than people expect. Some panels take only one manufacturer’s breakers, and some older panels have no listed breaker still in production, which is why they get flagged on sight regardless of condition.
Panels: full, overloaded, or obsolete
Three different problems get called the same thing. A full panel has no space left but adequate service. An overloaded service cannot carry the house. An obsolete panel has a known defect or no available parts. Each has a different and very differently priced answer.
The load calculation and a look at the bus with the cover off decide which one you have. A sub-panel solves the first for a fraction of the third.
Going from fuses to breakers
A fuse panel is not illegal and it is not inherently unsafe, but it has no ground, limited capacity, and a failure mode where a fuse gets replaced with a larger one and the wire behind it is no longer protected. Most of them were installed for a house with far fewer loads than it now carries.
The conversion is a service change: new equipment, grounding and bonding brought current, every circuit identified and labeled, the utility coordinated for the disconnect, and an inspection at the end. It is also the point at which insurers and buyers stop asking questions about the panel.
Breakers, and the ones with no replacement
A breaker that trips is usually doing its job. A breaker that is warm, that will not reset, or that sits in a panel with heat marks on the bus is a different conversation, and the bus is the part that cannot be seen with the cover on.
Some panel lines, Federal Pacific Stab-Lok and Zinsco among them, have no current listed replacement breaker, so the correct answer there is the panel rather than the part. If that is what is on the wall, you are told.
“Clint came out installed me a large 200 amp panel put some new dedicated lines in my basement and garage he did great clean work all inspections passed he was thorough and knowledgeable. I will have him back out again.”
Jason Holtzman · Google review
How the visit goes
- The call
You describe what the house is doing and what prompted it: a tripping breaker, an inspector’s note, a planned addition. That shapes what gets measured first.
- The measurement
Load across the service under real conditions, voltage at the main, the condition of every lug and the bus. On an older panel, the breaker brand gets identified, because some have no listed replacement still made.
- The finding
You get the number and what it means. If the service carries what the house asks of it, you hear that, and the conversation becomes a sub-panel or a single circuit instead of a service upgrade.
- The work
Permit where required, utility coordinated for the disconnect, new equipment installed, every circuit identified and labeled, and the site left ready for the inspector.
What the job includes
- A load calculation against what the house actually runs, given to you as a number
- Permit application where the municipality requires one
- New panel, breakers and a legible circuit directory
- Utility coordination for the disconnect and reconnect
- Grounding and bonding brought to current requirements
- The site left ready for inspection, and the inspection attended
What it does not
- Drywall repair beyond the panel opening
- Appliance repair, which is a different trade
- Work on the utility side of the meter, which is the utility’s own
Anything that is not an electrical problem gets identified as such and handed on. Recent jobs are worth a look before you call.
Related panels & service work
Fuse Box to Breaker Panel Conversion 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
The obsolete panel brands concentrate in this county, because they were installed through exactly the decades this housing was built and upgraded.
St. Louis City
Fishing a wall is harder here and sometimes not possible, so the honest answer about opening one comes before the work rather than during it.
Lincoln County
Rural properties where the panel is fine and the two hundred foot run to the barn is the actual job.
Thirty towns across five jurisdictions, all on the service areas page.
Questions worth asking first.
Do I need a bigger service, or just more space in the panel?
Those are different problems. A full panel with spare capacity takes a sub-panel or tandem breakers. A panel that is out of capacity takes a service upgrade, and the load calculation tells us which one you have before anything is ordered.
Will the power be off all day?
A panel change means the service is off while the work happens, usually most of a working day. You will be told the window before the day starts, and the utility and inspection timing are arranged around it.
How do I know if my panel brand is a problem?
Federal Pacific Stab-Lok and Zinsco both have documented failure-to-trip histories and no current listed replacement breaker, so the panel gets replaced rather than repaired. The label on the door identifies it in seconds.
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.
Worth a call before it gets worse.
Heat, a smell or a repeated trip is the house reporting something real. Fuse Box to Breaker Panel Conversion in O’Fallon and across the metro.
Hours are Mon-Thu 8-5, Fri 8-4, Sat 10-3 · or type it out.