The electrified high power cables can carry voltage of 1.000 volt residential areas up to 800.000 volts for transport over long distances. But what happens when two such wires touch each other;

What we are seeing here is something called a “Voltaic arc.” When two power lines come too close to each other, begin to carry electricity between them, creating a visible electrical discharge in arc shape. It seems to us as a blue light and is a result of ionization of the air environment.