Spectacular Montreal fireball caused by an electrical arc
A massive fireball roared through a section of Montreal this in November, 2013 andl burned along an overhead utility line shortly after the Montreal area was battered by an intense windstorm that toppled trees and caused region-wide power outages.
"This is a high-impedance arcing fault," said Massoud Amin, a senior member of the Institute of Electrical and Electronics Engineers (IEEE) and director of the University of Minnesota's Technological Leadership Institute. "It's a release of energy caused by an electrical arc."