Videos;
BALL LIGHTNING OVER RAIL PLATFORM
https://www.youtube.com/watch?
But also at the top of an electric post along the street.
https://www.youtube.com/watch?
https://youtu.be/Y6oCTWDeL8c?t=49
Conclusion:
the electric power of the ball lightning is heating up the wire enough to do the smoking job.
see: from time 0.25: https://www.youtube.com/watch?v=Y6oCTWDeL8c













