Zinsco & Federal Pacific Panel Replacement in San Diego
Zinsco, Sylvania-Zinsco, and Federal Pacific Stab-Lok panels are still in thousands of San Diego homes. Both are documented fire hazards that fail silently. Here's how to identify them and what replacement actually costs.
If your San Diego home was built between 1950 and 1990 and you have never had the main panel replaced, walk out to the garage right now and check the label. If it says Zinsco, Sylvania-Zinsco, Federal Pacific, or FPE Stab-Lok — that panel is a documented fire hazard, full stop. Insurance carriers in California are increasingly refusing to renew policies on homes with either brand.
Why these panels fail
Zinsco / Sylvania-Zinsco
Zinsco breakers are notorious for melting to the bus bar instead of tripping during an overcurrent event. Once welded in place, the breaker can carry far above its rated current — the bus bar overheats, and you get arcing, scorching, and house fires. The failure rate has been documented in IEEE studies and CPSC reports since the 1980s.
Federal Pacific (FPE) Stab-Lok
Independent testing has shown FPE Stab-Lok breakers fail to trip on overload at rates exceeding 30%. A 2002 New Jersey lawsuit produced a finding that the company defrauded UL on the original listing. The panels were never recalled because the company that made them no longer exists, but every consumer-safety body recommends replacement.
How to identify your panel
- —Zinsco: thin colored breaker handles (red, blue, green, yellow) labeled 'Zinsco' or 'Sylvania-Zinsco'
- —FPE: black panel cover with 'Federal Pacific Electric' or 'Stab-Lok' silver lettering
- —Pushmatic: large brown rectangular breakers you push instead of flip (different concern — aging contacts)
- —If unsure, snap a photo of the panel interior and send it to us — we'll identify it for free
Replacement cost in San Diego (2026)
| Existing panel | Typical replacement | Notes |
|---|---|---|
| Zinsco 100A → modern 100A | $2,200 – $3,400 | Like-for-like, panel + breakers only |
| Zinsco 100A → 200A upgrade | $3,200 – $5,800 | Includes new meter base + grounding |
| FPE 100A → 200A upgrade | $3,200 – $5,800 | Most common SD scenario |
| Panel + service entrance + relocation | $5,500 – $8,500 | When existing location is non-compliant |
What replacement involves
- 01Permit pulled with the City of San Diego or applicable jurisdiction
- 02SDG&E coordination for the cut-and-reconnect
- 03Remove the existing panel and meter base
- 04Install a new 100A or 200A panel (Square D QO, Eaton CH, or equivalent)
- 05Transfer all branch circuits, re-bond, and re-ground
- 06Schedule city inspection and SDG&E re-energize
Quick answers, straight up.
Are Zinsco panels really a fire hazard?
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Yes. Zinsco breakers can fuse to the bus bar instead of tripping, allowing dangerous overcurrent to flow indefinitely. The failure mode is documented in IEEE and CPSC reports, and major California insurers are non-renewing homes with Zinsco panels.
How do I know if I have a Federal Pacific panel?
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Open your main electrical panel cover. If the dead-front cover says 'Federal Pacific Electric' or 'Stab-Lok' in silver lettering, you have an FPE panel. Send us a photo of the interior and we will confirm at no cost.
How much does it cost to replace a Zinsco or FPE panel in San Diego?
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A like-for-like replacement runs $2,200 to $3,400. Most homeowners take the opportunity to upgrade to 200 amp service at the same time, which runs $3,200 to $5,800 total including permit, SDG&E coordination, new meter base, and grounding.
Will my insurance company drop me for having a Zinsco or FPE panel?
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Increasingly, yes. Allstate, State Farm, Farmers, and several other major California carriers have non-renewed policies on homes with Zinsco or FPE panels in the last two years. Replacement is now treated as a near-mandatory safety upgrade by underwriters.
