Subject: Earth currents (Maxey)..
Date: Thu, 11 Nov 1999 100819 -0600 (CST)
From: "Roy L. Beavers"
To: emfguru
--------------------------------------------------
.......Dr. Ed Maxey understands this EMF "stuff" too!!!!
He has obtained a computer soft-ware program that does
some of the ground current calculations..... He told me
of thissome weeks ago, but i have not been able to get
back to him.....
I hope that our techies will check this out!!!! I really
think he is on to something useful.....
Roy Beavers (EMFguru)
roy@emfguru.com
.....It is better to light a single candle than to curse the darkness.....
NEW!!! Website
...................People are more important than profits.................
---------- Forwarded message ----------
Date: Thu, 11 Nov 1999 08:33:37 -0600
From: Edward Maxey
To: "Duane A. Dahlberg" ,
"Roy L. Beavers"
Subject: Earth currents
Dear Prof. Dahlberg,
.
Many many thanks to you for pointing out,
"**the important issue is the adverse effects from the use of earth as a
carrier of electricity that should be in wires.**."
The predominant source of EMF exposure to our population of people (of
which Roy says they are more important than profits) stems from the
ubiquitous grounding of neutrals in the WYE distribution system.
Here is a readout from EMFCALC which demonstrates how this works. The
calculated X/Y spot is set to 60 feet from centerpole and 5.5 feet above
the surface. The underground neutral is set to minus 40 feet. There is a
current imbalance in the distribution lines of 35, 20 and 15 amperes. The
program calculates the net current and splits it between the underground
neutral (could be the sheath of a telephone line) and the pole neutral.
The phase of the neutral is also calculated and is quite apart from the
phase of A, B and C on
the transmission and distribution lines.
Most of the 2.94 mG at the X/Y spot comes from the underground neutral!
The program is an enhancement of something which Alasdair Philips sent
over a couple of months ago. Please let me know if you would like EMFCALC
emailed to you. It will run from DOS or inside Windows.
Again, thanks for stressing the most important source of EMF exposure in
our country.
Cordially,
Ed Maxey
_________________________________________________________
The Power Line EMF Calculator
Transmission Line Assignments
Upper left Phase 120° Amps 150.00 Arm -8.00 Height
70.00
Middle left Phase 0° Amps 150.00 Arm -8.00 Height
57.50
Lower left Phase 240° Amps 150.00 Arm -8.00 Height
45.00
Upper right Phase 240° Amps 170.00 Arm 8.00 Height
70.00
Middle right Phase 0° Amps 170.00 Arm 8.00 Height
57.50
Lower right Phase 120° Amps 170.00 Arm 8.00 Height
45.00
Distribution Line Assignments
Left Phase 120° Amps 35.00 Arm -3.50
Height 30.00
Middle Phase 0° Amps 20.00 Arm 3.50
Height 30.00
Right Phase 240° Amps 15.00 Arm 3.50
Height 25.50
Neutral Phase 109° Amps -10.18 Arm 2.00 Height
20.00
Underground Phase 109° Amps -10.18 Arm-40.00 Height -2.00
Measurements are in feet.
Press A to adjust factors, H for help, Q to quit, other keys continue:
Distance to centerpole; X Coordinate :? 60
Distance above ground; Y Coordinate :? 5.5
Problem Solution
THETA X VECTOR Y VECTOR EMF DIPOLE ANGLE
0° -12.923 4.192
4.141 252°
30° -10.485 3.606
3.380 251°
60° -5.238 2.053
1.715 248.6°
90° 1.412 -0.049
0.431 88°
120° 7.685 -2.138
2.431 74.4°
150° 11.898 -3.655
3.794 72.9°
180° 12.923 -4.192
4.141 72°
210° 10.485 -3.606
3.380 71°
240° 5.238 -2.053
1.715 68.6°
270° -1.412 0.049
0.431 268°
300° -7.685 2.138
2.431 254.4°
330° -11.898 3.655
3.794 252.9°
The mean EMF at 60 feet from centerpole and 5.5 feet above
ground level is 2.94 mG or 0.294 µT.
Any key continues
______________________________________________________
>It is good for people to be aware of the article: Electrical Pollution
by
>Kurt Gutknecht, editor, Wisconsim Agriculturist. This is a very
valuable
>story which extends far beyond the dariy farm. In this article the
author
>has clearly stated the reality of the seriousness of the "so called"
stray
>voltage problem on dairy farms. Eventhough emphasis is placed on the
>adverse impact of the harmonics of 60 Hz, **the important issue is the
>adverse effects from the use of earth as a carrier of electricity that
>should be in wires.**
Archive provided courtesy of WaveGuide, http://www.wave-guide.org
Reprinted with permission of Roy Beavers, http://www.emfguru.com