[Elecraft] OT; electrical safety

[Fred Jensen]

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
>
>
>
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