How to Tell If You Have a Federal Pacific Panel (2025 Guide)

TL;DR: Federal Pacific Electric (FPE) Stab-Lok panels were installed in an estimated 28 million US homes between the 1950s and early 1980s. Independent testing has found that a notable percentage of Stab-Lok breakers fail to trip during an overload, which is the exact job a breaker exists to do. If your panel has "Federal Pacific Electric" or "Stab-Lok" stamped on the door, get an electrician to evaluate it before you assume it's fine.

_Last reviewed: July 2026 · 7 min read_

You bought or inherited an older house, and someone mentioned the word "Federal Pacific" like it was a bad omen. It's not folklore. It's a documented electrical issue that insurance adjusters and electricians take seriously, and knowing what's behind your panel cover matters more than most homeowners realize.

Okoniq Property Hub helps you log your panel's make and model along with inspection dates, so you have a record ready if an insurer or buyer's inspector asks.

What does a Federal Pacific panel actually look like?

A Federal Pacific panel usually has "Federal Pacific Electric" or "FPE" printed on the metal door, with breakers labeled "Stab-Lok" on the switches themselves. The breakers often have a distinctive red toggle or a thin, rectangular shape compared to modern Square D or Eaton breakers.

These panels were manufactured heavily from the 1950s through 1981, when Federal Pacific Electric shut down. If your house was built or last rewired in that window, there's a real chance one is still installed. Open the panel door (with the main breaker off if you're unsure how) and check the printed nameplate inside the door or on the panel's interior housing. Some panels were rebranded under names like "FPE Stab-Lok" or sold through electrical supply houses without the Federal Pacific name showing prominently, so also check for the word "Stab-Lok" stamped directly onto individual breakers.

If you're already comparing panel brands while sorting out other electrical quirks in an older home, it's worth reviewing aluminum wiring safety fixes at the same time, since houses from that era often have both issues together.

Why does a Federal Pacific panel matter more than an old panel in general?

It matters because independent testing has repeatedly found that Stab-Lok breakers fail to trip at a higher rate than other brands from the same era. A widely cited study out of the University of Alabama found failure rates in some Stab-Lok models exceeding 25% under standard overload testing conditions, compared to failure rates under 5% for comparable breakers from other manufacturers.

A breaker's entire job is to cut power before a wire overheats and starts a fire. When it doesn't trip, the wiring keeps carrying more current than it's rated for, and that heat has to go somewhere. This isn't a case of "any 40-year-old panel is a little risky." It's specific to the internal contact design in Stab-Lok breakers, which several forensic engineering reports have linked to design flaws rather than simple age-related wear.

Some insurance carriers now decline new policies or require panel replacement before renewal once they learn a Federal Pacific panel is in place. That alone is often the deciding factor for owners who were on the fence about the cost of replacement.

Should you replace it yourself or call a licensed electrician?

Call a licensed electrician. Panel replacement involves working at the main service point, which carries live current even with the main breaker off, and it typically requires a permit and inspection from your local building department.

A straightforward 100-amp to 200-amp panel swap generally runs between $1,800 and $4,000 depending on your region, panel size, and whether the electrical service entrance also needs upgrading. Some electricians offer a cheaper interim fix of replacing individual Stab-Lok breakers with compatible replacements, but most licensed pros and insurance inspectors don't consider breaker-by-breaker swaps a permanent solution, since the underlying panel bus bar design is part of the concern in some models.

| Option | Full Panel Replacement | Individual Breaker Swap | |---|---|---| | Typical cost | $1,800–$4,000 | $150–$400 per breaker | | Fixes underlying issue | Yes | Partial | | Satisfies most insurers | Yes | Rarely | | Permit required | Yes | Sometimes |

While an electrician has the panel open, it's a good time to also confirm nothing downstream needs attention, like a ceiling light fixture replacement if old wiring runs to fixtures you're planning to update anyway.

How do you find out if a home you're buying has one?

Ask the seller for the panel brand directly and request the most recent electrical inspection report before closing. Sellers aren't always required to disclose panel brand specifically, but most states require disclosure of known safety hazards, and a Federal Pacific panel usually qualifies once a seller is aware of it.

If you're already under contract, add a request for a licensed electrician's panel evaluation to your inspection contingency. This typically costs $100 to $250 and gives you a clear answer plus a repair estimate you can use in negotiation. Buyers routinely ask sellers to either replace the panel before closing or credit the cost at the closing table, and most sellers agree rather than risk the deal falling through over a documented safety issue.

If you end up owning the home and want to keep other electrical safety items current, pairing your panel check with a look at childproofing electrical outlets covers both the source and the endpoints of your home's wiring in one pass.

FAQ

How can I tell if my panel is Federal Pacific without opening it?

You generally can't tell for certain without opening the panel door, since the brand name is printed on the interior nameplate or on individual breakers. A quick way to narrow it down: if your home was built between 1950 and 1981 and has never had panel work documented, it's worth the five minutes to check.

Are all Federal Pacific panels dangerous?

Not every unit fails, but the concern is that failure isn't predictable from the outside, since a breaker can look and function normally for years before failing to trip during an actual overload. That unpredictability is why most electricians recommend replacement rather than a wait-and-see approach.

Will my homeowners insurance drop me for having one?

Some insurers will decline renewal or require replacement first, particularly in states like Florida and parts of the Northeast where FPE claims history is well documented. Ask your carrier directly, since policies vary widely and some simply flag it for a follow-up inspection instead.

How much does it cost to replace a Federal Pacific panel?

Most homeowners pay between $1,800 and $4,000 for a full panel replacement, depending on amperage, panel size, and whether the electrical service line also needs upgrading. Rural areas and older homes with outdated grounding sometimes push costs higher due to additional code-compliance work.

Can I just replace the breakers instead of the whole panel?

You can, and it's cheaper at $150 to $400 per breaker, but most licensed electricians and insurance inspectors don't treat it as a full fix since some of the documented issues involve the panel's internal bus bar design, not just the breakers themselves. A full panel swap is the option that satisfies most insurance and resale concerns.

This is educational information, not electrical or safety advice. Call a licensed electrician to evaluate your panel before making any repair or replacement decision.