How Do Fuses and Fuse Boxes Work? - Make Your Best Home The Fuse Box. A fuse box has a series of threaded sockets into which the fuses are screwed in like light bulbs. Each circuit in the home is protected by a fuse, and each fuse must be the correct type and appropriately rated for its circuit. Using the wrong type of fuse for a circuit Author: Bob Formisano What Is a Fuse Box? - Bryant AC & Electric Mar 13, 2012The fuse box is a metal box installed somewhere on the inside or outside of the home. It is installed by an electrician and has a hinged cover to keep the fuses protected. Most homes built before 1960 will have a fuse box, those built after have a circuit breaker box. This box controls the electrical flow to your home.