On the party balloon front, it's time to stop selling those on the San Francisco peninsula.
SF Muni is only 600V. Caltrain is 25KV traction power. Power is now on in some sections.
The western US has never had 25KV overhead traction power until this month.
25KV is far more dangerous, and the catenary wire isn't that high up, closer than the length of some balloon strings.
Rather long and grim Network Rail (UK) public service announcement.[1]
Rather long and grim Network Rail (UK) public service announcement.[1]
[1] https://www.youtube.com/watch?v=udaS3NDCkk0