Service entrance
Electrical Panel Upgrades in Centennial, CO
From crowded 100-amp panels in Willow Creek to recalled equipment flagged at closing, we replace the service properly and get it through inspection. Centennial, Greenwood Village and the corridors off Arapahoe Road.
When a Centennial Home Outgrows Its Panel
The panel is the one piece of equipment every other electrical decision runs through, and most of the ones we open in this part of Arapahoe County were sized for a house that did far less. A 1970s build off Holly Street was never planned around a heat pump, an induction range, a hot tub and a car that drinks 40 amps overnight.
Centennial Electric handles electrical panel upgrades across Centennial for three reasons, and they show up in roughly that order. The first is capacity: the directory is full, tandem breakers are doubled into slots that were never meant to hold them, and there is nowhere to land a new circuit. The second is condition: a panel that buzzes, runs warm, shows rust from a leaking meter socket or carries scorched bus bars has stopped being reliable. The third is equipment that the industry has already judged, usually Federal Pacific Stab-Lok, Zinsco or Challenger, which home inspectors flag and insurance carriers increasingly refuse to cover.
Whichever brought you here, the work follows the same path and ends at the same place: a correctly sized service, a legible directory and a passed inspection on the record. If you are not sure which situation you are in, an electrical safety inspection will tell you before you commit to anything.
What a Service Change Actually Covers
A panel upgrade is a sequence of related tasks rather than a single swap, and here is the whole list so nothing on the invoice is a surprise.
- 1Load calculation to the current codeWe total the connected and anticipated loads in the house, apply the demand factors the code allows, and size the service to the result. This is what tells us whether 150 amps is genuinely sufficient or 200 is the honest answer.
- 2Panel and meter-socket assessmentWe inspect the existing enclosure, the meter socket, the service conductors and the point of attachment, because a failing socket or a frayed service drop turns a simple panel swap into a different job.
- 3Permit filed with your jurisdictionCentennial contracts its building services, and we file with the office covering your address, not a generic one. The permit number goes on your paperwork.
- 4Utility coordination and disconnectWe arrange the disconnect with the utility so the meter can be pulled safely, and we schedule it for a window that keeps the house without power for as little time as the work allows.
- 5New panel, bus and breakers installedThe enclosure is mounted to code-required working clearances, the bus is sized to the service and every circuit gets a breaker rated for its conductor, including arc-fault and ground-fault types where the code now requires them.
- 6Grounding electrode system brought currentOlder installations often rely on a single ground rod or a water-pipe bond that has been interrupted by a plastic repair. We install the electrodes the current code expects and bond them properly.
- 7Service conductors and mast work as neededIf the existing conductors are undersized for the new service, or the mast is damaged or too short for clearance, we replace them as part of the job rather than leaving a bottleneck in place.
- 8Circuit identification and relabellingEvery circuit is traced and tested, then written onto a printed directory that a future electrician, inspector or buyer can read without guessing.
- 9Whole-home surge device, if you want oneThe panel is open and the bus is accessible, which is by a wide margin the cheapest moment in the life of a house to add surge protection.
- 10Inspection scheduled and attendedWe book the inspection, meet the inspector, answer their questions and handle any correction at our cost. You receive the signed-off record.
How a Panel Upgrade Runs
Assessment and written quote
A licensed electrician comes to the house, pulls the panel cover, photographs what is behind it and runs the load calculation. We look at the meter socket, the mast and the grounding while we are there. You receive an itemised quote covering the panel, the breakers, the grounding work, the permit and any conductor replacement, usually within a day. The visit is free and there is no obligation attached to it.
Permit, utility and installation day
We file the permit and arrange the utility disconnect, which sets the install date. On the day, the crew arrives early, protects the work area and cuts power at the meter. The old panel comes out, the new enclosure goes in, circuits are landed on correctly rated breakers and the grounding electrode system is brought up to current requirements. Most residential service changes are a single day on site, with the no-power window confined to several hours in the middle of it.
Inspection and handover
The jurisdiction inspects, typically within a few business days of the install. We meet the inspector, resolve anything flagged at no cost to you, and then walk you through the new panel, the directory and the warranty paperwork. The permit closes on the record, which is exactly where you want it when the house is appraised or sold.
Why Centennial Electric for a Panel Upgrade
We will tell you not to do it
A load calculation sometimes comes back saying the existing service is adequate and the real problem is one overloaded circuit. We say so. Selling a service change to a house that does not need one is an easy sale and a bad reason to be in business.
Recalled panels are routine here, not a special project
Stab-Lok, Zinsco and Challenger equipment turns up constantly in Arapahoe County housing from the sixties and seventies. We know which jurisdictions want what documented, what the insurers are currently asking for, and how to get the change scheduled inside the window a carrier or a closing has given you.
The directory is the deliverable
Plenty of panels are installed competently and then labelled in pencil, badly, or not at all. We trace every circuit, test it and print a directory that is still useful in fifteen years. It costs us an hour and it saves whoever opens that cover next an afternoon.
What you get on every job
- Licensed & Insured
- Permit Filed and Inspection Attended
- Written Scope Before Work Begins
- Load Calculation to Current Code
- Workmanship Warranty in Writing
Find Out What Your Service Can Actually Carry
If your directory is full, your panel is warm to the touch, or an inspector wrote a brand name on a report and handed it to you with a deadline, the next step is a load calculation and a written quote. Both are free, and both take less time than the worrying does. We work Centennial, Greenwood Village, Littleton, Lone Tree and the rest of the south metro.
Licensed, insured and permit-handling electricians. (303) 529-7038.