Panel Upgrades in Fairfield
Undersized service, aging panels, adding capacity for EV chargers or new equipment. We size it right, pull the permit, pass the inspection.
Request A Free On-Site Scope
We call back the same day. No call center, no rotating crew. Steve answers the phone and opens your panel.
Or call (707) 803-6332The Load Calculation Comes Before The Amp Number
Plenty of older Fairfield homes still run on the 60 or 100 amp service they were built with. Before anyone mentions 200 amps, Steve adds up what the house carries today and what is on the way, whether that is an EV charger, a heat pump or an ADU out back. That number decides the size of the new service.
Service changes are familiar ground for Steve. He started as a Navy electrician, did union work on the server rooms behind the early internet, and then spent years running crews that upgraded wiring for other contractors. Today he schedules the PG&E disconnect and reconnect, files the permit under his license, books the inspection, and backs the installation labor with a lifetime warranty.
Schedule A Free On-Site Scope- Sized from real numbers: A written load calculation sets the amperage, so the new service matches what the house will use.
- Utility day planned: The PG&E shutoff and reconnect get booked ahead, so the outage lands on a date set with PG&E ahead of time.
- Grounding brought to code: Old ground connections and missing bonding get corrected as part of the upgrade.
- Subpanels where they fit: A garage or shop subpanel can solve the problem without replacing the main service.
- Warranty on our work: If the installation labor ever fails, Steve returns and makes it right at no labor charge.
Jobs That Usually Call For More Service
Most Fairfield panel upgrades happen because something new is coming into the house. These are the projects that tend to set one off.
Electrical Installation
The charger, heat pump circuit or ADU feed that pushed the house past its limit gets wired once the new panel has room for it. Our Fairfield installation page covers that side.
Generator Installation
A panel change is the best moment to plan backup power, since the interlock or transfer switch has to suit the new equipment. Look over our generator and transfer switch work in Fairfield.
Electrical Repair
When breakers trip but the numbers say the service is big enough, the cause is a fault somewhere on the circuit. That is a job for circuit repair in Fairfield homes.
Lighting Contractor
A remodel that adds recessed cans and yard lights adds load too, so those fixtures go into the calculation. See our lighting projects around Fairfield.
Panel Upgrades
How we size, permit and install main services and subpanels in every city we cover is laid out on our panel upgrade service page.
Before You Commit To A Bigger Panel
Can I add an EV charger without upgrading my Fairfield panel?
Sometimes. If the load calculation shows spare capacity, the charger goes on its own circuit in the panel you already have. If it is tight, a lower charging rate or a load management device can bridge the gap. When the service truly is too small, we say so and show you the math.
What does grounding have to do with a panel upgrade?
A new panel has to be grounded and bonded to current code before it passes inspection. In older Fairfield homes it is common to find the ground clamped to a water pipe that was later replaced with plastic, or no bonding at all. Correcting that is part of the job and protects every circuit downstream.
Would a subpanel work for my detached garage or shop?
If the main service has room, a subpanel is often the cleaner way to power an outbuilding. It puts the breakers out where the tools are and keeps the main from filling up. The load calculation tells us whether the existing service can feed it or has to grow first.
How do I know if my Fairfield home needs a panel upgrade?
The usual signs are breakers that trip under normal use, a panel that is full with no room to add a circuit, lights that dim when a big appliance kicks on, or a service that is simply too small for what the house now runs. A lot of older Fairfield homes still have 100 amp or smaller service that was sized decades ago. The only way to know for sure is a load calculation. We open the panel, measure what is actually drawing, and tell you straight whether you need an upgrade or just a repair.
Do you coordinate with PG&E for the service upgrade?
Yes. A service panel upgrade usually means the utility has to disconnect and reconnect the service, and sometimes upgrade the meter or the drop. We handle that coordination with PG&E along with the City of Fairfield permit and inspection, and we schedule it so your power is down for the shortest window possible. You get the signed-off paperwork at the end, and the work carries a lifetime warranty on installation labor.
How long is the power off during a Fairfield panel upgrade?
For most residential service upgrades, the power is down for the working part of the day and back on that same evening. We plan the PG&E disconnect for a set window so you are not left guessing, pull the old panel, set the new service and grounding, move and label the circuits, and get the meter ready for the utility to reconnect. If the inspector needs to sign off before PG&E reconnects, we schedule that to fall on the same day where the jurisdiction allows it. We tell you the plan up front so you can arrange your day around the outage, and we do not leave you sitting in the dark longer than the job actually requires.
Panel Upgrades In Fairfield: Sized For The Real Load
The electrical panel is the heart of the system. Get it sized and built right and everything downstream behaves. Get it wrong and the house fights you for years.
A large share of Fairfield’s housing was built between the 1950s and the 1980s, and a lot of those homes still run their original service panel. A 60 or 100 amp panel was plenty when a house had a few circuits, a gas range, and no central air. Today that same house is asked to carry an electric range or induction cooktop, a heat pump or several mini-splits, a hot tub, a home office, and increasingly an EV charger. The panel was never built for that, so it runs full, breakers trip, and there is no room left to add a circuit safely. That is the point where a panel upgrade stops being optional. We size the new service to 200 amp, sometimes 400 amp for larger or all-electric homes, based on a real load calculation rather than a guess.
What The Upgrade Actually Involves
A proper panel upgrade is more than swapping a box. We bring the grounding and bonding up to current code, which on older Fairfield homes is often the part that was never right to begin with. We label the circuits clearly, add the AFCI and GFCI protection the code now requires, and leave room in the panel for the loads you are planning to add next so you are not back here in two years. We coordinate the utility disconnect and reconnect with PG&E, pull the permit with the City of Fairfield, and schedule the inspection. The goal is to get your power back on the same day with a panel that is built to last another 30 years.
Subpanels And Commercial Service
Not every job is a full service upgrade. A subpanel is often the right answer for a garage workshop, an ADU, a shop, or an addition that needs its own circuits without overloading the main. On the commercial side in Fairfield, a tenant changing the use of a space, or bringing in equipment the existing service cannot feed, usually drives a service or three-phase panel upgrade. We scope the right solution for the actual load instead of overselling, build it to code, and stand behind it. Call (707) 803-6332 for a free on-site scope, or send the details through our contact page.
The Panels We See In Older Fairfield Homes
Some of the equipment still in service around Fairfield is older than the people living with it. Fuse boxes still turn up in the oldest homes, and while a well-kept fuse box can be safe, it offers no room to grow and no modern breaker protection. Crowded panels with double-tapped breakers, open knockouts and heat marks on the bus are common finds on our load checks. When we open a panel like that, we tell you plainly what we see and why replacing it is worth doing, rather than adding one more circuit to a box that was already at its limit. The point of the upgrade is real, code-current protection between the utility power and everything in your walls.
What The Day Looks Like
A residential service upgrade in Fairfield is usually a one-day job when it is planned right. We schedule the PG&E disconnect ahead of time so the power comes down on a set window instead of catching you off guard. The old panel comes out, the new service and grounding go in, circuits get moved over and labeled, and the meter and main are set for the inspector. Power is back on the same day in most cases, and the inspection is scheduled so the permit closes out cleanly. We keep you told through the whole thing, so you know when the power is coming down and when it will be back. The finished panel is one you can add to for years, with real capacity and honest labeling.
Panel Out Of Room? Steve Will Run The Load Math.
Email a photo of your panel to storres@towersec.net or call and tell Steve what you want to add. He will come out, work the calculation with you standing there, and tell you whether the house needs a new service, a subpanel or nothing at all. CA Lic. 847255.
Service changes we have finished are pictured in the project gallery. To book a time, use the contact page.