100–200 amp panel upgrades & breaker box replacement in San Ramon, Contra Costa County. Local electricians, upfront pricing and fast scheduling.
(833) 652-8933 Request a quoteOlder homes in San Ramon were wired for a different era. Add an EV charger, a heat pump, an induction range or an ADU and a 100 amp panel runs out of room fast. Phasethree Electric handles electrical panel upgrades in San Ramon from permit to final inspection, including 100 amp to 200 amp service upgrades, breaker box replacement, fuse box replacement and sub panel installation.
Breakers that trip when two appliances run, warm or buzzing panel covers, a fuse box instead of breakers, no open slots, rust or scorch marks, or a brand with a known failure history such as Federal Pacific, Zinsco or Sylvania. Insurance carriers and buyers in Contra Costa County often flag these panels during a sale.
New main breaker panel, new grounding and bonding to current code, labeled circuits, meter socket and service entrance work coordinated with the utility, permit and city inspection. Where you want to keep the existing panel we can add a sub panel for a garage, workshop, ADU or EV charger.
Cost depends on amperage, whether the meter and service entrance need replacing, and how the utility feeds the property. We give a fixed written price after a short on-site evaluation. Call (833) 652-8933 to schedule one in San Ramon or nearby Diablo, Danville, Dublin, Alamo.
We provide electrical panel upgrade throughout San Ramon and the surrounding communities of Contra Costa County.
Most residential panel replacements are completed in a single day, with power off for roughly four to eight hours.
Yes. Panel replacements in San Ramon require an electrical permit and inspection. We pull the permit and meet the inspector.
For nearly every home in San Ramon, yes. 200 amp service comfortably supports a Level 2 EV charger, solar back-feed, heat pump and a modern kitchen.
“Got a 200 amp panel upgrade and an EV charger in one day. They handled the permit and the inspector passed it on the first visit.”
Derek W.“Had them do a full electrical inspection before we bought our house. The photo report saved us thousands in negotiations.”
Robert K.“They rewired our 1948 house room by room and we never lost power overnight. Walls were patched cleaner than we expected.”
Tom & Linda R.Upfront pricing · Same-day service · 24/7 emergency response