The answer to 'why is my fuse box buzzing noise' is that a buzzing noise coming from your fuse box is usually a sign of an electrical issue. This could be caused by a loose connection, faulty wiring, or a problem with the fuse itself.
Some common symptoms of a buzzing fuse box include flickering lights, intermittent power outages, or a burning smell. It's important to address this issue promptly, as a buzzing fuse box can be a fire hazard. If the buzzing is accompanied by any other electrical problems, it's best to call a licensed electrician to diagnose and repair the issue.