If you see this, call an electrician immediately.
If your home was built between 1950-1990 (or rewired in that time frame) and you see this replace it, NOW. This is a latent fire hazard.
The Consumer Product Safety Commission (CPSC) began an investigation in the early 1980s and hired electrical experts to test FPE Stab-Lok breakers installed in homes from 1960 to 1985, which did not fully comply with Underwriters Laboratories, Inc. requirements. Fifty-one percent of the tested breakers failed to trip. Unfortunately, the CPSC ended its investigation in 1983, stating in a news release that, “Based on the Commission’s limited budget, the known hazards the Commission has identified and must address... and the uncertainty of the results of such a costly investigation, the Commission has decided not to commit further resources to its investigation of FPE’s circuit breakers.” The CPSC claimed that the data did not establish “that the circuit breakers pose a serious threat of injury to consumers.”
Even though the CPSC investigation closed, one member of the testing team, Jesse Aronstein, continues to speak out about the dangers of FPE Stab-Lok panels. An electrical engineer with a doctorate in materials science, Aronstein cowrote a peer-reviewed paper to illustrate the fire damage that the panels cause. Based on information collected from fire reports, Aronstein and coauthor, Richard Lowry, estimate that FPE Stab-Lok panel failures result in as many as 2,800 fires, 13 deaths, and $40 million in property damage annually.
Reliance Electric Co., FPE’s parent company, provided additional information that leads one to doubt how safe these panels are. Reliance Electric Co. has stated that FPE obtained the Underwriters Laboratory seal of approval for its Stab-Lok breakers “through the use of deceptive and improper practices.” It’s also worth noting that the CPSC issued a more recent statement in 2011 regarding their earlier investigation, stating that it was closed “without making a determination as to the safety of FPE circuit breakers or the accuracy of the manufacturer’s position on the matter.”
The trouble with an FPE Stab-Lok panel is that it can function perfectly fine — until suddenly it doesn’t. It only takes one short circuit or overcurrent.
CPSC recommends getting this type of panel inspected by a qualified electrician “to look for any signs of overheating or malfunction among the circuit breakers.” However, after testing over 4,000 breakers, Aronstein states that you can only identify a defective Stab-Lok breaker by first removing it and then testing it. This process can be more expensive than installing a new, less risky panel, so in many cases, it makes more sense to replace an FPE Stab-Lok panel.
How to Tell If You Own a Federal Pacific Electric “Stab-Lok” Panel
Millions of homes were built with FPE Stab-Lok panels between 1950 and 1990. If your home was constructed during this time frame, then it may contain one of these panels.
Usually, “Federal Pacific” or “FPE” will be written on the box’s front cover. Inside the box, look for a label that says, “Stab-Lok.” The breakers will have a red stripe cross each switch.