Your house is protect by the breakers. You are protected by ground fault circuits. The fuse is to protect the amp. Houses don’t burn down because of fuses or breakers in equipment. The neighbor did manage to burn 1/2 her house down behind an electric mickey mouse clock in the basement with a 2 wire plug. The wire caught on fire and NEVER blew a breaker. It was ruled improperly wired. A licensed contractor and the CITY signed off on it 11 months before. It was suppose to be a GFI or some weird protection circuit. Like for a swimming pool. Their basement floods it has a sump and pump..
Usually fires are heaters, or kitchen fires. I’ve seen caps blow. BUT I’ve never seen amps catch on fire. Tube fires are pretty cool.. LOL
My stuff just dies. I have dropped a couple boom boxes off buildings.. That’s cool. They explode.