The answer to 'why is my fuse box power surge' is that a power surge in your fuse box is often caused by a sudden increase in electrical demand or a problem with the electrical system. This can happen when high-powered appliances or devices are turned on, or if there is an issue with the wiring, circuit breakers, or other electrical components.
Some common causes of a power surge in the fuse box include faulty wiring, overloaded circuits, lightning strikes, or a problem with the utility company's power supply. Symptoms may include flickering lights, tripped circuit breakers, or a buzzing sound from the fuse box. To address the issue, you may need to reset the circuit breakers, check for any damaged wiring, or call an electrician to inspect and repair the problem.