How to Change a Fuse Box to a Circuit Breaker | Hunker Changing a fuse box to a circuit breaker is a challenging task for the average do-it-yourself person. The reason is that the wiring has to be worked hot. In other words, there is no way to shut off the electricity coming into the fuse box unless you ask the utility company to pull the meter. Changing A Fuse Panel To A Circuit Breaker Panel - Part 2 The box connectors that you removed from the fuse panel can be reused on the new breaker panel. It is most common that the wires running from the main disconnect electrical box to the fuse panel were run in a metal pipe, with threads on the ends, as shown in Figure 3.