Before circuit breakers were used, fuses protected our circuits from overloading. At this time, homes used much less electricity than they do today federal pacific electrical panels
. The typical fuse box was only designed to handle between 30 and 60 amps of power. It is now common for your average home to need 100-200 amps of power or even more. This can cause fuse boxes to frequently become overloaded, which leads to blown fuses.