Licensed, Bonded & Insured
Commercial Panel Upgrades in Fullerton, CA
Commercial panel upgrades in Fullerton (Sunset Lane). C-10 #1120441. Call (657) 239-6331.
Quick answer
Do you upgrade electrical panels in Fullerton?
Yes. We cover Fullerton from our La Mirada shop. When a suite is out of slots or the gear runs warm under normal load, we load-calculate, pull the city permit when required, and coordinate SCE. Every job is different. We provide a custom quote after we see your site. Typical panel upgrade projects often start around $4,957 in labor (14 hours at our standard rate) before materials, permits, and scope; there is no one-size-fits-all maximum. Call (657) 239-6331.
Panel Upgrades in Fullerton
Commercial panel upgrades for Fullerton shops and offices downtown and along Commonwealth get real-load sizing and city permits. Full boards and warm gear under tenant lighting are a change-out with a written outage window, not an open-ended dark day. We do not install utility transformers or industrial switchgear. SCE reconnect is scheduled when the meter moves. Call (657) 239-6331 with which loads must stay up.
C-10 #1120441. Bonded and insured. License & insurance . Customer reviews for this service appear below when available.
Why Fullerton clients call us
Areas we serve in Fullerton
- Sunset Lane
- Hillcrest Park
- Downtown Fullerton
Fullerton issues we see with panel upgrades
- Overloaded 100A services near Downtown and Hillcrest: kitchen and AC trip the main together
- Federal Pacific, Zinsco, or Pushmatic panels that still turn up in mid-century houses: warm breakers or a main that will not stay reset
- Aluminum or ungrounded branch circuits: two-prong rooms that fail a buyer inspection
- Shared neutrals and kitchens remodeled without a service upgrade: lights flicker when the laundry starts
- Dead outlets and GFCI that will not hold after a storm or bathroom remodel
About Fullerton
First Electric is a licensed C-10 shop based in La Mirada (C-10 #1120441). We cover homes and small commercial suites across Fullerton: Downtown, Sunset Lane, Hillcrest Park, Amerige Heights, and the Commonwealth corridor.
People call when something stopped working: a dead receptacle, a breaker that will not hold, half a house dark, or a panel that feels warm. We fix that first. When the service is maxed out (no spare slots, unsafe gear, or load that will not support an ADU or Level 2 charger), we plan the upgrade honestly, pull the permit, and coordinate SCE when the meter moves. Fire or life-safety emergency? Call 911 first, then us.
How a commercial panel upgrade works
Assess load and gear
We review the existing panel, connected loads, and planned equipment so the upgrade matches real demand.
Custom written quote
Every job is different. We provide a custom quote after we see your site. Call (657) 239-6331 to schedule around your hours.
Permit and utility
Building permit, inspection, and SCE coordination when the meter or service ampacity changes.
Install in a planned outage
Power is off for the swap. We land circuits cleanly, test, and meet inspection with downtime planned up front.
Timeline
Many small commercial change-outs land in one extended outage window (often 6–12 hours). Utility appointments or larger gear can add schedule time.
Why businesses hire us for panel upgrades
Load calc for the suite
We size for current and planned commercial loads under the California Electrical Code, not a default residential pitch.
Downtime planning
Off-hours and weekend windows when the work allows. You know when power will be off before we start.
Licensed and checkable
C-10 #1120441. Bonded and insured. Verify on our license page.
Permit path included
City inspection and utility coordination are part of the job, not your homework after the fact.
Available in These Locations
We provide panel upgrades services in cities throughout our service area.
Frequently Asked Questions About Panel Upgrades
Process Questions
We do not give blind estimates over the phone. After we understand your Fullerton project and, when needed, visit the site, we provide a custom written quote with scope and pricing spelled out. Call (657) 239-6331 to start.
Yes. Commercial service and panel work needs permits and inspection. We handle permitting and coordinate with the building department and utility when service equipment changes.
Expect rules for working clearances, grounding and bonding, overcurrent protection, labeling, and often AFCI/GFCI where the occupancy requires them. Tenant spaces may also need landlord or property-management approval before the utility cutover.
Service Questions
Often yes. Many homes only need a new main panel or meter-main while existing branch circuits remain. If we find damaged wiring, aluminum branch circuits that need remediation, knob-and-tube, or overloaded feeders, we recommend targeted repairs or a partial rewire, not a full gut unless the system warrants it.
Yes. We upgrade main panels and subpanels for older Fullerton homes, ADUs, and commercial spaces, including 200A upgrades and equipment that meets current California Electrical Code. Every job is different. We provide a custom quote after we see your site. Typical panel upgrade projects often start around $4,957 in labor (14 hours at our standard rate) before materials, permits, and scope; there is no one-size-fits-all maximum.
Pricing Questions
Commercial panel pricing depends on load, gear type, and downtime planning. Every job is different. We provide a custom quote after we see your site. Typical commercial electrical projects often start around $2,832 in labor (8 hours at our standard rate) before materials, permits, and scope; there is no one-size-fits-all maximum.
Location Questions
We typically respond the same day for scheduled work. Phones are answered 24/7 for emergencies; call (657) 239-6331. From our La Mirada base we reach Fullerton quickly when you need us.
Related Services
Explore our other electrical services
Ready to Get Started?
Contact us today to learn more about our Panel Upgrades services.