The Danger of Federal Pacific "Stab-Lok" Electrical Panels.
These electrical panels, where used by builders in the 1960s and 1970s, are considered unsafe. The problem is that the breakers often will not trip when they should. That can lead to overheating and fires.
These circuit breakers have a failure rate of approximately 25 percent.
I have personally seen Federal Pacific breakers not trip when a direct short is placed on a cable and held there, it’s sort of like arc welding.
You can identify them by the Federal Pacific and Stab-Lok branding on the panel cover.
If you have this panel in your home you are taking a big risk! Your next home improvement project should be to have the panel replaced.
Picture of Federal Pacific panel.