: Sorry, I posted the wrong link. I am trying to find the correct one to the
: parade video.
: I think you told me about this one some time back. See above link. A
: tree-trimmer apparantly dropped a large limb across some powerlines. The
: arcing burned one line off its bushing on the pole and it came down on
: some 220 volt home-service lines, upping the potential of several nearby
: houses! You can see the arcing of the incoming home service lines as the
: melt off the houses. One house arcs along its gutters and everything! I
: can imagine evrything plugged-in inside the effected homes burned to
: Anyhow, I will try and find the link to the parade arc/jacobs ladder.
: Sorry for the confusion!
Thanks! The above link is really scary - I just think if one of those houses belonged to me...
I have also seen the parade clip, but I lost the link. If I recall, it was either a Mylar balloon or maybe a blast from a confetti gun (with Mylar strips) that was accidentally aimed towards the lines. The event triggered the phase-phase flashover and magnetic forces took over. If not interrupted, an arc will race along a pair of conductors, heading in a direction away from the source of power due to Lorentz forces. Sort of like a plasma rail gun...
This effect has also been seen on occasion on electric railways if an arc occurs between the third rail and main rails. Scares the heck outta' the commuters...
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