Professional Electrical Services for Your Home or Business

FREQUENTLY ASKED QUESTIONS

California Electrician Q&A: 

Your Top Questions Answered

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A guide from Expert Electric, licensed electrician and electrical contractor company.Serving the Conejo Valley and the San Fernando Valley, California

Your Trusted Agoura Hills Electrician

Whether you're planning a panel upgrade, adding an EV charger, or just noticed a flickering light, electrical work in California comes with its own set of rules and quirks. Below, we answer the questions we hear most often from homeowners and business owners across .

Licensing & Hiring

Q: Do electricians need to be licensed in California?

Yes. Any electrical work beyond very minor repairs must be performed by a C-10 licensed electrical contractor, licensed through the California Contractors State License Board (CSLB). Always verify a contractor's license number on the [CSLB website](https://www.cslb.ca.gov) before hiring.

Q: Can I do my own electrical work?

Homeowners can legally perform electrical work on their own primary residence under an owner-builder permit in most California jurisdictions. That said, electrical work is unforgiving of mistakes — improper wiring is a leading cause of house fires — so most homeowners hire a licensed pro for anything beyond swapping a light fixture or outlet. 

Q: How do I know if a job requires a permit?

In California, most electrical work requires a permit from your local building department, including panel upgrades, new circuits, subpanel installations, and EV charger installs. Simple like-for-like replacements (like swapping a switch or outlet) generally don't. When in doubt, ask your electrician or call your city's building department directly.

Panels & Wiring

Q: How do I know if my electrical panel needs to be upgraded?

Common signs include frequently tripped breakers, a panel still using fuses instead of breakers, a panel rated below 100 amps, warm or discolored outlets, or a home with older brands like Federal Pacific or Zinsco panels, which are known fire risks and are recommended for replacement regardless of symptoms.

Q: What size panel do I need?

Most modern California homes are moving to 200-amp service, especially if you're planning to add an EV charger, heat pump, induction range, or solar with battery storage. A licensed electrician can calculate your home's load requirements to recommend the right size.

Q: Is aluminum wiring dangerous?

Aluminum branch-circuit wiring, common in homes built between the mid-1960s and mid-1970s, isn't inherently dangerous but is more prone to loose connections and overheating than copper. If your home has it, an electrician can inspect and, if needed, retrofit connections with approved anti-oxidant compounds or connectors (a process called "pigtailing").

EV Chargers & Solar

Q: What's involved in installing a home EV charger in California?

Most Level 2 chargers require a dedicated 240-volt circuit (typically 40–60 amps) and a permit from your local jurisdiction. Many California utilities, including PG&E, SCE, and SDG&E, offer rebates for EV charger installation — ask your electrician what's currently available in your area.

Q: Will adding solar or an EV charger require a panel upgrade?

Sometimes. It depends on your home's existing electrical load and panel capacity. A licensed electrician can run a load calculation to determine whether your current panel can handle the addition or if an upgrade is needed.

Q: Do I need battery backup with solar in California?

It's not required, but with more utilities shifting to time-of-use rates and NEM 3.0 reducing export credits, battery storage has become increasingly popular for maximizing solar savings and providing backup power during outages or Public Safety Power Shutoffs (PSPS).

Code & Safety

Q: What are GFCI and AFCI outlets, and where does California require them?

GFCI (Ground Fault Circuit Interrupter) outlets protect against electric shock and are required in kitchens, bathrooms, garages, outdoor areas, and near any water source. AFCI (Arc Fault Circuit Interrupter) breakers protect against electrical fires caused by arcing and are required in most living areas, including bedrooms, hallways, and family rooms, per the California Electrical Code.

Q: How often should my home's wiring be inspected?

For most homes, an inspection every 10 years is reasonable, or sooner if you're buying an older home, notice warning signs (flickering lights, burning smells, warm outlets), or are planning a major renovation.

Q: What should I do if I smell something burning near an outlet or panel?

Turn off power to that circuit at the breaker if it's safe to do so, avoid using the outlet or area, and call a licensed electrician immediately. A burning smell can indicate overheating wires or connections and shouldn't be ignored.

Costs & Timelines

Q: How much does a panel upgrade cost in California?

Costs vary by region, panel size, and permit fees, but most panel upgrades range from a few thousand dollars up into the higher end for larger service upgrades or utility coordination. Getting a written estimate after an in-person assessment is the best way to know your actual cost.

Q: How long does a typical electrical project take?

Simple jobs like outlet or fixture replacements can be done in an hour or two. Panel upgrades typically take a full day, though utility coordination for the final connection can add time. Larger projects like whole-home rewiring may take several days to a couple of weeks.

Have a Question We Didn't Cover?

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Every property is different, and the best answers come from an in-person look at your specific setup. [Contact Your Company Name] today to schedule an assessment or ask us your question directly — we're happy to help. 

Expert Electric is a licensed and insured C-10 electrical contractor serving the Conejo Valley and the San Fernando Valley, California. CSLB License #45758