@catsalad my grandfather had this story about the hydroelectric plant he worked at, where a "fuse" blew one stormy night. It made a crater in the reinforced concrete wall it was mounted on and the copper it was made of coated the surface of the hole. It's possibly still there as a warning for the newbies.
He'd heard the fuse blow from his house which was about 1km away from the turbine room.
I'm nervous as soon as the voltage goes above 5V and a few mA. Worked on power mains devices reluctantly