You probably have a "UFER" ground, named for Herbert Ufer who came up
with the idea of encasing the ground electrode in concrete to protect
ordnance storage compartments during WW2, often in the southwestern US
with very poor soil conductivity. In the latter 60's, the NEC permitted
it unless a buried water pipe was available, and sometime in the late
70's made them a requirement. The NEC now calls them Concrete Encased
Electrodes.
The NEC currently requires that CEE's be rebar in the concrete [usually
the foundation] and can be difficult to find since very little if
anything will be externally visible. Our home is 4 years old and I
can't see the actual ground connection. I can see the ground conductor
headed downward from the service entrance. I presume it connects to a
CEE. [:-)
As to your power pole: If it has a distribution transformer, it will
very likely have lightning arrestors on the primary with a ground
conductor and electrode. If it doesn't have a transformer, it's only
purpose is to hold up the conductors on insulators.
None of this drivel applies to RF.
73,
Fred ("Skip") K6DGW
Sparks NV USA
Washoe County DM09dn
On 4/17/2017 2:00 PM, ab2tc wrote:
Hi,
This is totally off topic; I apologize.
I just received the new ARRL publication "grounding and bonding for the
radio amateur". It is very interesting reading. I see that the NEC requires
two ground rods for regular power installations; never mind any antennas. I
swear that when when I moved into this house there were absolutely no ground
rods installed. I just inspected our power pole that supplies our power. I
could see no wires going in to the ground. So I have no idea where our
"green wire" came from.
But I have have installed two 8 foot ground rods to ground my antennas and
they are bonded to the AC entry panel. But what's up with this? I bet my
neighbors have no ground rods installed either.
Knut - AB2TC
--
View this message in context:
http://elecraft.365791.n2.nabble.com/OT-electrical-safety-tp7629429.html
Sent from the Elecraft mailing list archive at Nabble.com.
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
--
This message has been scanned by E.F.A. Project and is believed to be clean.
---
This email has been checked for viruses by AVG.
http://www.avg.com
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
