Several spectacular examples the explosive force of high voltage power, including uncontrolled arcing at high voltage power substations and a controlled demonstration.
This video explains the importance of contacts in electrical switches. It describes the effects of arcing and contamination on switch operation. It also shows the...
video_demos.colostate.edu The forming and breaking of an arc as a high-votlage disconnect switch is opened to shut down a power line. Many more video demonstrations...