Expert Electrician Services in Sunnyvale, California

This is the Sunnyvale classic. The house runs central air, an electric dryer, a home office, and now the owner wants a 50-amp EV circuit. The load calculation comes back over the service rating, which means the charger cannot legally go in without more capacity. The fix is either a service upgrade to 200 amps or a listed load-management device that pauses charging when the house peaks. We present both, with the real numbers, and let you choose. Either way the charger ends up on its own dedicated circuit with the right protection.

Sunnyvale's mid-century homes were wired with switch loops that ran power to the light first and dropped only a hot and switched leg to the switch — no neutral. Modern smart switches, dimmers, and timers need that neutral. The symptom is a smart switch that will not power up or a dimmer that buzzes. We open the boxes, and where the framing allows, we pull a neutral through; where it does not, we specify no-neutral-compatible controls. Either way, we do not leave abandoned splices buried in the wall.

The 1950s and 60s tracts in Sunnyvale — the ranches and the Eichlers — went up during the years when these two panel brands dominated the market. Both have documented breaker failure modes that can let a circuit overheat without tripping. In a city where every home is adding load, that is a risk worth removing. We swap in a modern load center, correct the grounding electrode system, and add whole-house surge protection while the panel is open, since the labor overlaps.

Sunnyvale garages do more than park cars. Between the EV charger, the woodworking tools, the 3D printer, and the network rack, a garage can draw more than some whole houses did in 1970. When all of that shares the two original garage circuits, breakers trip and equipment reboots. We run dedicated circuits sized to the actual equipment, add a small subpanel where it makes sense, and separate the lighting so a tripped tool breaker does not leave you in the dark.

The ADU boom in Sunnyvale is real, and the electrical math gets skipped more often than it should. A detached unit with its own kitchen, laundry, and mini-split can add 60 to 80 amps of demand. Tied into a 100-amp house service, the math fails the moment both units cook dinner and run laundry. We size the combined service before the ADU is framed — usually a 200-amp upgrade with a proper feeder to the unit — so the inspection passes and the breakers hold.

Sunnyvale's larger lots carry aging low-voltage landscape systems: corroded transformers, chewed cable, fixtures full of water. The 120-volt side is often worse — pool equipment wired before GFCI rules, timers bypassed, junction boxes buried under mulch. We rebuild these systems properly: sealed connections, GFCI protection on everything near water, and transformers sized with headroom so adding fixtures later does not mean replacing the transformer again.