system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What's making the big loud noise when they turn on the outdoor lights at Sporting Stadiums?
gpt
Its the mechanical sound of the switch engaging. Dealing with extremely high current involves a larger, more robust contact which must engage quickly and forcefully to avoid arcing.

Its like a much bigger version of your circuit breaker engaging, which makes considerably more noise than a wall switch.


Also, if you go by what you hear in movies, etc. it's probably exaggerated.