If your St. Louis home was built between 1950 and 1990, you may have a Federal Pacific Electric (FPE) Stab-Lok panel — one of the most dangerous electrical panels ever installed in American homes. Here's what you need to know.
What Is a Federal Pacific Panel?
Federal Pacific Electric was one of the largest electrical panel manufacturers in the United States from the 1950s through the 1980s. Their "Stab-Lok" panels were installed in an estimated 28 million American homes. They were common in St. Louis homes built during this era.
The problem: multiple investigations and studies have found that Stab-Lok breakers fail to trip during overloads at an alarming rate — meaning the safety device that's supposed to prevent electrical fires doesn't work.
How to Identify a Federal Pacific Panel
- Open your electrical panel door — look for the name "Federal Pacific Electric" or "Stab-Lok" on the panel interior
- The breakers are often red (single pole) or have red highlights
- The panel door is typically gray with a distinctive handle
- If you're unsure, send us a photo — we can identify it immediately
⚠️ Insurance impact: Most Missouri homeowners insurance carriers will not renew or issue new policies on homes with Federal Pacific panels. If you're buying or selling a home in St. Louis, a Federal Pacific panel will almost certainly appear on the inspection report and become a negotiation item.
Why These Panels Are Dangerous
The core failure: Stab-Lok breakers have a higher-than-acceptable rate of failing to trip when a circuit is overloaded. When a breaker should trip but doesn't, current continues to flow through an overloaded circuit — generating heat that can ignite wiring insulation and surrounding materials.
The Consumer Product Safety Commission investigated Federal Pacific panels in the 1980s. Independent electrical engineer Dr. Jesse Aronstein spent decades testing Stab-Lok breakers and found failure rates of 25% to 65% depending on the breaker type and age.
What to Do
Replace it. There's no repair option for a Federal Pacific panel — breaker replacements are not a reliable fix because the bus bar design itself is part of the problem.
Replacement typically involves:
- Removal of the old FPE panel
- Installation of a new panel (Square D, Eaton, or Siemens)
- Transfer of all circuits to the new panel
- Permit and inspection
- Ameren Missouri coordination for disconnect/reconnect
Cost to Replace a Federal Pacific Panel in St. Louis
| Replacement Scenario | Estimated Cost |
|---|---|
| Same amperage replacement (100A → 100A) | $1,500 – $2,500 |
| Upgrade to 200A service | $2,500 – $4,000 |
| Panel replacement + aluminum wiring remediation | $3,500 – $6,500 |
If you have a Federal Pacific panel, don't wait for a problem to occur. Call (314) 408-5647 for a free panel evaluation and replacement estimate.