On 11/27/2014 01:10 AM, Jim Lux wrote:
On 11/26/14, 2:54 PM, Hal Murray wrote:
[email protected] said:
The ground rod needs to be bonded to the rest of the building ground
system.
How do I do that effectively if the power goes in the front of the
building
and the antenna is on the back?
AWG 6 wire with no breaks or splices between the two.
The goal of bonding all the grounding systems together is not for
transient suppression. It's to make sure that there's no DC or line
frequency potential difference between "electrical safety ground" at
various places in the building.
The background on the whole grounding/bonding requirement is more about
safety when a power carrying conductor, either inside equipment or
overhead, touches something that people might touch. And, to a lesser
extent to ensure that if there's an internal short, that the breaker or
fuse will trip.
NEC requirements for grounding and bonding aren't there for transient
suppression.
A copy of IEEE 1100 (the Emerald Book) is good reading for the whole
bonding and equipotential planes, etc. (unfortunately not free from IEEE).
A good book on transient protection is Ronald Standler's book
"protection of electronic circuits from overvoltages"
Something like $20 from Dover...
Do use the ITU-T K-series as a reference, it's a great starting point
and they are there for free download. The ITU-T K.27 explains grounding
in a station, and that could be interesting food for though in many
cases, where people try to motivate Isolated Bonding Network while Mesh
Bonding Network might be better in the end. K.40 may be inspiring. K.97
a special case which is partly relevant here.
Cheers,
Magnus
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
