for the magnetic fields, I would suggest 250 meters (depending the Voltage
and system).
For the electrically charged particles in the air, 400 meters should be
taken.
Read the Corona-Professor Henshaw
See
http://www.milieuziektes.nl/Pagina112c.htmlGreetings,
Charles Claessens
member Verband Baubiologie
www.milieuziektes.nl
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