How to Repair Live High Voltage Transmission Lines(!)

Generally voltages above 110kV are used for transmission lines. While voltages can be as high as 1200kV, the bulk of energy transmission occurs between 138kV and 765kVac. So, repairing live transmission lines is a bit difficult, to say the least!

Here's an excellent video on how high voltage power lines are inspected prior to repair:
http://www.youtube.com/watch?v=9tzga6qAaBA