Szczepan Bialek wrote:

"J. C. Mc Laughlin" napisal w wiadomosci
.. .

An earthed wire is run above the HV 3-phase and does a good job of
providing a low impedance path for lighting. One side of the HV to LV
transformer is earthed as well as the center tap of the secondary
(Neutral). The neutral is again earthed at the service entrance as is one
end of the green wire running unimpeded to every human touchable
conductor.

Is something flowing in the all earth wires?

If you actually knew anything about electricity, which you don't, you
would know that under normal circumstances there is no current in the
earth ground connection.

The earth ground connection is for safety and current will only flow if
something is wrong.

This is also why radios powered by AC are connected to earth ground; it is
for safety against electrocution if something in the equipment breaks and
has NOTHING to do with the operation of the radio as a radio.