________________________________________
From: TowerTalk [towertalk-bounces@contesting.com] On Behalf Of Jim Brown
[jim@audiosystemsgroup.com]
Sent: Friday, May 10, 2013 10:48 PM
To: towertalk@contesting.com
Subject: Re: [TowerTalk] Fwd: Grounding of tower
On 5/10/2013 5:57 PM, Al Kozakiewicz wrote:
>> Actually, we CANNOT use the EARTH as a conductor for AC power either --
> the resistance is far too high to carry enough current.
>
> Not true - see my prior post.
>This statement is in conflict both with physical reality AND nearly all
>building codes.
Huh? Much rural electrification was (and still is) carried out using the earth
as a conductor. Building codes do not apply to electric power distribution and
are irrelevant anyway to your assertion that the earth cannot be used as a
conductor for AC power due to resistance.
I2R losses are constant for a given current. Raise the voltage; reduce the
current and efficiency rises as the loss decreases. Or keep current constant;
just raise the voltage and efficiency also rises as I2R loss becomes a smaller
percentage of the equation. The whole point of all electrical systems is to
deliver power (work), not current.
Al
AB2ZY
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