Depending if you are using solid or stranded.
I prefer #2 stranded. A little easier to work with.
You should have a MGB at the tower. If tower has 3 legs run the #2 to
all 3 do not make a ring.
The MGB should have a #6 bonded or lug to MGB and bonded or lug to tower
steel.
Ground for equipment should return to #2 leading to Main earth and coax
or cable ground leaving tower should be grounded to MGB.
That should be sufficient for a ground at tower site. In order to make
it more compliant you may want a ring around the tower and
pad with proper spacing of bonded ground rods. If this is done then the
tower legs would bound to the ring along with MGB and equipment.
The Return to Main earth electrical would bond in one place on the ring.
On 4/15/2015 2:58 PM, Mike Hammett wrote:
Your ground should be at least 4 gauge, maybe even larger than that.
One of the 0/x gauges is in my mind for some reason. That should bond
the electrical ground with all tower and equipment grounds.
-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com
<https://www.facebook.com/ICSIL><https://plus.google.com/+IntelligentComputingSolutionsDeKalb><https://www.linkedin.com/company/intelligent-computing-solutions><https://twitter.com/ICSIL>
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*From: *"Paul McCall" <[email protected]>
*To: *[email protected]
*Sent: *Wednesday, April 15, 2015 2:41:15 PM
*Subject: *[AFMUG] Electrical - Grounding question - long run
In my continued disposition of acknowledging that I am not a
electrical grounding expert, I lay out this scenario for review, a new
tower we just built.
We installed a new tower, approximately 200ft. from the service panel
that feeds it. We will be on our own breaker (kinda irrelevant here).
In the past, we had run 10 gauge wire (x3) out to the tower with
110vac. Voltage drop is relatively negligible, certainly within the
bounds of working properly to drive our 24v charger for the battery array.
I was told, by a grounding “expert” that all my equipment electrical
grounds need to homerun to a bus bar that ride the ground back to the
service panel directly, that nothing else is acceptable.
AND, and this is the big part… that I needed to seriously upgrade the
200ft. ground wire only that rides back to the panel to something
significantly bigger. How much bigger I am not sure.
So, I figured I would ask the crowd for an answer J
Thanks!
Paul McCall, Pres.
PDMNet / Florida Broadband
658 Old Dixie Highway
Vero Beach, FL 32962
772-564-6800 office
772-473-0352 cell
www.pdmnet.com <http://www.pdmnet.com/>
[email protected] <mailto:[email protected]>
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