Knut,
When I built my house in 2001, only one ground rod at the utility entry
point was required. We built a house next door in 2009, and two ground
rods separated by 6 feet was required. So sometime between those two
dates the NEC requirements changed.
None-the-less, I have a perimeter wire around the house with a driven
ground rod at each corner. Since I have 45 degree corners on one side,
and several other 90 degree offsets that means I have 9 ground rods plus
the one at the utility entry, so I think I am "covered".
73,
Don W3FPR
On 4/17/2017 5:00 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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