[Towertalk] FOK

[Pete Goudreau]

J&M Weatherley wrote:

> I very much doubt that you would get a flash ionization situation
> across the small but finite resistance across thrust bearings, tilt
> over bearings, etc.

I figured the impedance would be high enough to create a heck of a 
potential which would flash over to the tower itself.

> A 100,000 amp strike would make one great solid welded chunk!

Yeah, it would at that.

> In the BIG satellite dish world the azimuth and elevation axis
> bearings always have a heavy duty wire ground connection bypassing 
the
> bearings to avoid having a solid block of metal in the event of a
> lightning strike.

Ah, thanks for that, very helpful bit of information indeed.

Thanks again,
Pete, AD5HD