How to Increase Amps in a Breaker Box | Hunker Increasing the amperage of the circuit breakers in your circuit breaker box shouldn't be done on a whim. The circuit breakers perform an important function in your home's electrical system by protecting overloads in the wiring. There are instances when increasing the amperage of a circuit breaker in the breaker box is a good idea. how to increase ampage on main fuse box - MyBuilder How to increase ampage on main fuse box my fuse box is 60 amps, my shower is 40 if i turn on a few more items it trips the switches. How can i increase it to a 100 or 200.