Does your home or business contain a Federal Pacific Electric Slab-Lok breaker box? If it was built or remodeled between 1950 to 1985 you should check to see. These panels are associated with breakers not tripping. That can lead to overheating and cause a fire. If it does, you may want read this article from Hartford with more details on this type of electrical panel - https://blog.hsb.com/2016/03/17/bad-circuit-breaker/