Commercial & industrial electrical contractors in Clayton, Contra Costa County. Local electricians, upfront pricing and fast scheduling.
(833) 652-8933 Request a quoteBusinesses in Clayton cannot afford electrical downtime. Phasethree Electric is a commercial electrical contractor serving offices, retail stores, restaurants, warehouses, medical suites, schools and light industrial facilities in Clayton and across Contra Costa County with responsive repair, scheduled maintenance, tenant improvements and new construction electrical.
Tripping breakers on equipment circuits, lighting outages, failed contactors, parking lot lighting, sign circuits and emergency lighting tests. Maintenance agreements give Clayton businesses priority scheduling and after-hours work so you never close for electrical issues.
Design-build electrical for build-outs, panel and service upgrades, 3-phase distribution, dedicated equipment circuits, data and low-voltage rough-in, exit and emergency lighting and final inspection coordination with the City of Clayton.
Machinery hookups, motor controls, VFDs, 480V distribution, warehouse high-bay LED retrofits, EV fleet charging and backup power. Also serving nearby Diablo, Danville, Concord, Pittsburg. Call (833) 652-8933.
We provide commercial electrician throughout Clayton and the surrounding communities of Contra Costa County.
Yes. Much of our commercial work in Clayton is scheduled nights and weekends to avoid disrupting customers.
Yes. We prepare load calculations and drawings and manage plan check and inspections for Clayton projects.
Yes, including hood and make-up air circuits, walk-in coolers, and dedicated equipment circuits.
“Tesla Wall Connector installed in the garage in a couple hours. Clean conduit run, app set up, and they showed me how to schedule off-peak charging.”
Samantha L.“Called at 11pm with sparks from a bathroom outlet. Someone was here within the hour and made it safe, then came back in the morning to finish.”
Priya S.“Smart switches finally work because they added neutrals at every box. Should have called them first instead of trying myself.”
Nina P.Upfront pricing · Same-day service · 24/7 emergency response