Why are the insurance companies pushing to get some old breaker boxes replaced? Some old breakers don't pop, trip, or cut the power off when overloading. This will overheat the in-wall wire since the faulty breakers don't trip, cutting the power off to prevent any possible fires. The new breaker will pop, and customers may experience some inconvenience right after the upgrades; why? The old defective breakers did allow more power to flow in the circuit, creating a potential fire hazard. The new breaker will cut the power off if any overloads are present. What is an overload? Many appliances on a breaker, such as a big load on faulty breakers, are terrible combinations. Be safe.