The NEC is for home and industry electrical safety. We are talking about
how to best protect against lightning damage, since we have this big
lightning arrestor in our yard. The best way to do this is keep the tower
and it guys separate. You will also have to disconnect your coax grounds
and move them 1 or 2 feet from house electrical equipment. Jerry
At 01:16 PM 12/08/2003 -0400, you wrote:
>All -
>
>This grounding stuff really energizes people (no pun, groan).
>
>I have read many, many write-ups on this, and the best I have seen are those
>offered by Polyphaser and Alpha-Delta. Both of these reputable companies,
>and several engineers whose write-ups I have read, insist that all ground
>points be tied together.
>
>The principle is this:
>
> If all points are tied together, then they will all rise together, to a
>common high voltage during the strike event. If they are all at a common
>voltage, then there is no delta VS.. If there is no delta VS., then no
>current will flow, and nothing will cook.
>
>I cannot PROVE that this is correct, but it makes sense to me, and it is
>what I do here at my place.
>
>By the way, the underwriters code requires all grounds to be tied together
>also, If I have read the code correctly.
>
>Your mileage may vary.
>
>73 de Gary, AA2IZ
>
>
>----- Original Message -----
>From: "K Van Horn" <W7SV@sbcglobal.net>
>To: <tentec@contesting.com>
>Sent: Tuesday, August 12, 2003 11:59 AM
>Subject: Re: [TenTec] Another grounding question
>
>
> > Dear Ed and Janet,
> >
> > Do not EVER tie them together! When lightning strikes your tower, and it
> > WILL, you will have upwards of 100000 volts destroying every electrical
> > device in your home from the ground lead of your electrical system during
> > the 15 -50 milliseconds that it takes for the voltage to bleed off into
>the
> > ground system!! Many textbooks recommend tieing these together, but they
>are
> > in ERROR!! Save yourself a lot of money and more trouble than you can
> > imagine!
> >
> > If you tie them together and you take a strike, the following is a list of
> > what you can expect to replace:
> > (even if they are turned off at the time of the strike because the voltage
> > is so high that it jumps the switches)
> >
> > Air Conditioner (inside and outside unit)
> > Refrigerator
> > Dishwasher
> > Oven
> > Microwave
> > Television sets
> > Amplifiers
> > Radios
> > Computers
> > Can Openers
> > Clock Radios
> > Light Bulbs
> > Doorbells
> > Stereo Amplifier and Receiver
> > Garage door opener
> > Security System
> >
> > All in all, over $20,000 in damage on two strikes 6 days apart. Whereupon
>I
> > realized the error and cut the link out with a boltcutter and solved the
> > problem!
> >
> > Sincerely,
> >
> > Kirby
> > ----- Original Message -----
> > From: "Ed and Janet" <janed@burgoyne.com>
> > To: <tentec@contesting.com>
> > Sent: Monday, August 11, 2003 12:37 PM
> > Subject: [TenTec] Another grounding question
> >
> >
> > What is the thinking on grounding the tower ground to the ground coming
>into
> > the house at the power, 220 service entrance? Tie them together or not?
>Ed
> > _______________________________________________
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> > TenTec@contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
> > _______________________________________________
> > TenTec mailing list
> > TenTec@contesting.com
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> >
>
>
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