Zinsco and Federal Pacific Panel Replacement
Zinsco panels are common in San Luis Obispo County homes built between the 1950s and the 1970s, and California insurance carriers are increasingly requiring replacement before they will issue or renew a policy. 5 Star Electrical Services is a licensed C-10 electrical contractor, license #973698, bonded and insured. We replace Zinsco, Federal Pacific Stab-Lok, Challenger and Pushmatic panels throughout San Luis Obispo County and northern Santa Barbara County. A main panel replacement runs $3,000 to $4,000 and a meter main load center upgrade runs $4,000 to $9,000. Call (805) 215-4503 or book a free estimate online.
Why Insurance Carriers Are Requiring Replacement
Zinsco panels can fail in a specific way: the breaker appears to be on and the handle moves normally, but it does not trip under fault conditions. Federal Pacific Stab-Lok, Challenger and Pushmatic panels have their own documented issues with breakers failing to trip. A breaker that does not trip is the one safety device standing between a fault and a fire. Carriers have started treating these panels as an unacceptable risk, and in California a growing number now require replacement at renewal.
A Panel Like This Should Be Replaced, Not Added To
If you are planning an EV charger, a heat pump, an ADU or a kitchen remodel and you have one of these panels, the panel comes first. We do not add load to a panel we do not trust.
What Replacement Costs
A main panel replacement, where the meter and service stay put, runs $3,000 to $4,000. A meter main load center upgrade runs $4,000 to $9,000 — that range is wide because AFCI and GFCI breakers cost $150 to $250 each, and a panel built out with combination breakers throughout costs considerably more than one without. If the service itself is undersized, an underground service upgrade from 100 amp to 200 amp runs $10,000 to $30,000. Every job is quoted as a flat price in writing before work begins. There are no trip or mileage charges anywhere in our service area.
What the Job Includes
Load calculation and equipment sizing. The permit through your city or county. Coordination with PG&E for the service disconnect and reconnect. Removal of the old panel. Installation of the new panel, breakers, grounding and bonding to current code. Every breaker correctly labeled. Whole-home surge protection at the panel. The final inspection. We handle the utility and permit coordination — you do not make those calls.
Grounding Comes With It
Current code requires two ground rods along with a cold water bond and a gas bond. On older Central Coast homes we rarely find all three present. We correct grounding and bonding as part of every panel replacement.
How Long It Takes
The panel work is a one-day job with the power off for roughly eight hours. We deliver a quote within about three days. If the job also requires an underground service upgrade, PG&E's lead time is three to six months from application to energized service.
How long does a panel upgrade take?
We deliver a quote within about three days. The panel work itself is a one-day job and the power is off for roughly eight hours. If the job includes an underground service upgrade, PG&E's lead time is three to six months from application to energized service.
Will my power be off during the upgrade?
Yes, for roughly eight hours on the day of the panel work.
Do I need a permit for a panel upgrade?
Yes. Panel replacement requires an electrical permit and a final inspection. Inside city limits the permit comes from the city building department; outside, from the county. We pull it as part of the job.
Are Zinsco and Federal Pacific panels dangerous?
Both have documented issues with breakers failing to trip under fault conditions, and California insurance carriers increasingly require replacement. A panel of either brand should be replaced rather than added to.