"Szczepan Bialek" wrote in message
.. .

As a normal in the all country is leakage. Corona is from time to time.

"Physics, Electricity . the loss of all or part of a useful agent, as of
the electric current that flows through an insulator"

In overhead power supply the air is an insulator.

The both (corona and leakage) are nonsymmetric in AC.
So the ground is the only remedy.
S*
Hello Szczepan.
Neither you nor I would want to be near any "leaky" insulator. You appear
not to understand the definition and meaning of "insulator". Your past
behaviour indicates that there is no pint in trying to explain it to you.
All I will suggest is that you try to acquire and read a textbook on the
subject.

Regards, Ian.

ps: In the Subject line of this thread, who is the "UK earthling"?