Electrician FAQs: Answers for Sacramento Homeowners

An electrician installs and repairs the wiring, panels, breakers, outlets, switches, and fixtures that carry power through a building. In California, CSLB's C-10 Electrical Contractor classification covers placing, installing, or connecting electrical wires, fixtures, appliances, conduits, and solar cells. Home jobs range from fixing a dead outlet to upgrading a panel, adding an EV charger circuit, or rewiring an older house.

A standard breaker has a metal strip inside that heats up as current flows through it. ESFI explains that when a circuit is overloaded or shorted, the strip bends enough to trip a switch and cut power to that circuit. GFCI breakers also trip when current leaks to ground, and AFCI breakers trip when they sense dangerous arcing. Once the problem is fixed, the breaker can be reset.

Five things, mostly. An overload happens when too many devices run on one circuit. A short circuit happens when a hot wire touches a neutral wire. A ground fault is current leaking to ground, often through water or a metal case. An arc fault is sparking from damaged or loose wiring. And sometimes the breaker itself is worn out. The first one is common; the rest need an electrician.

Usually because the same circuit is overloaded again and again, or because there's a fault the breaker keeps catching. Note what was running when it tripped. If it holds after you unplug a few things and reset it, move some of those loads to another circuit. If it trips with nothing plugged in, or the instant you reset it, there's likely a short or ground fault that an electrician should find.

The tripping isn't the danger; the cause can be. ESFI's 2024 survey of California electrical contractors found most breaker trips came from the device working as intended, and 74% of contractors had seen evidence of dangerous arcing on AFCI-related calls. The CPSC advises finding out why a breaker tripped instead of just resetting it. Repeated trips deserve an electrician's visit.

Turn off or unplug what's on the dead circuit. Open the panel door, find the breaker sitting in the middle or OFF position, push it firmly all the way to OFF, then back to ON. Turn things back on one at a time. If the breaker trips again right away, leave it off and call an electrician instead of resetting it again.

Open only the hinged door on the front of the panel; that's all you need to reach the breaker handles. Keep the inner metal cover, called the dead front, in place. EC&M notes the service wires behind it stay energized even when the main breaker is off. If the panel is hot, wet, rusted shut, or smells like burning, don't open it; call an electrician.

Warning signs include a breaker that won't stay on even with everything on the circuit unplugged, one that feels hot or smells like burning, visible scorch marks or melted plastic, and random trips with very little load. Family Handyman notes a breaker that won't reset can also mean a short or ground fault, so an electrician should test the circuit before replacing the breaker.

It's not a safe DIY job. Replacing a breaker means removing the panel's inner cover, and the incoming utility wires stay live even with the main breaker off. The new breaker also has to fit your panel brand and match the wire size; InterNACHI warns that off-brand breakers that merely fit aren't an approved repair. Call an electrician.

It depends on the wire's material, insulation temperature rating, cable type, and the equipment's instructions, so your electrician sizes it from the code's ampacity tables. What matters for safety is that the wire is rated for the breaker. EC&M explains that a breaker protects the wire, so a 50-amp breaker on wire made for less lets that wire overheat before the breaker trips.

National cost guides put a typical service visit at $176 to $327 (Fixr, 2025) and hourly rates at $40 to $120 (This Old House, 2026). Bigger jobs cost more: about $1,300 to $4,500 for a panel upgrade and $7,286 to $13,257 to rewire a 2,200-square-foot home. Sacramento quotes vary, so get a written price before work starts.

Search the business name or license number on the Contractors State License Board's online license check. Make sure the license is active, lists the C-10 Electrical classification, and matches the name on your contract. For the person doing the hands-on work, you can check an electrician's certification number on the Department of Industrial Relations' electrician certification search.

They guard against different hazards. A GFCI (ground-fault circuit interrupter) shuts off power when current leaks to ground, which protects people from shock near water. An AFCI (arc-fault circuit interrupter) shuts off power when it detects arcing from damaged, overheated, or loose wiring, which helps prevent fires. ESFI notes the two can work together, and dual-function AFCI/GFCI breakers provide both.

California's Electrical Code follows the National Electrical Code, which requires GFCI protection for dwelling receptacles in bathrooms, garages, outdoors, crawl spaces, basements, kitchens, laundry areas, and within 6 feet of sinks, tubs, and showers, among other spots. The 2025 California code, based on the 2023 NEC, took effect January 1, 2026. When an electrician extends or modifies circuits, the newer protection rules usually apply to that work.

It needs attention. The CPSC found that homes wired with aluminum before 1972 were 55 times more likely to have an outlet connection reach fire hazard conditions than copper-wired homes. The wire itself isn't the problem so much as its connections. The CPSC accepts three permanent fixes: rewiring with copper, COPALUM crimps, or AlumiConn connectors, all done by a qualified electrician.

Most inspectors say yes. InterNACHI lists FPE Stab-Lok, Zinsco/GTE-Sylvania, Bulldog Pushmatic, and Challenger as the most common problem panels and recommends replacement, saying their breakers fail to trip at unusually high rates. The CPSC closed its 1983 FPE investigation without finding a serious risk, but it didn't declare the breakers safe either. Get an electrician's evaluation.

Yes. The City of Sacramento requires a building permit for new installations and modifications of electrical panels, and other cities and counties in the region require permits too. Your utility also has to disconnect and reconnect service, and SMUD and PG&E wait for the inspection sign-off before turning power back on. Your licensed contractor should pull the permit.

Not through a wall or dryer outlet. That can backfeed power onto utility lines and electrocute line workers, and SMUD says the generator owner is legally responsible for resulting injuries or damage. Use extension cords straight from the generator, or have an electrician install a transfer switch or interlock with a permit. Keep the generator at least 20 feet from the house.

Only as part of a gas-to-electric switch. SMUD's Go Electric bonus pays up to $500 per eligible circuit, up to $2,000 total, for a panel upgrade and circuits for an EV charger, range, and dryer. You must first replace a gas furnace or gas water heater with a qualifying heat pump, and a SMUD Contractor Network contractor must submit the rebate.

Only if it was installed by June 30, 2026. The IRS says the federal credit for home charging equipment applied to property placed in service from January 1, 2023, to June 30, 2026, at 30% of cost up to $1,000, in eligible census tracts. Utility rebates still exist, including up to $850 from SMUD Charge@Home and income-qualified help from PG&E.

The landlord, in most cases. The California Attorney General says landlords must provide safe and working electrical equipment and wiring, including lighting. Report problems to the landlord in writing and keep copies or photos. Tenants shouldn't open walls or change the panel themselves, and California law (Civil Code section 1942.5) bars landlords from retaliating against tenants who ask for repairs.

Common enough to take seriously. NFPA's 2022 report estimated an average of 32,620 U.S. home fires a year from 2015 to 2019 involving electrical distribution and lighting equipment, with about 430 deaths and 1,070 injuries a year. Wiring and related equipment accounted for 68% of those fires, and fires in walls or attics can burn a long time before anyone notices.