[TowerTalk] Grounding with two separate feeds.

[Roger (K8RI) on TT]

What happened to the Single point ground in the previous thread?
Also, induced voltages , which are the most common form of damage 
creators was ignored.   Far more damage is done by voltage induced into 
wiring from nearby strikes than direct strikes.  Yes on a strike by 
strike basis the direct hit wins, but there are far more nearby strikes 
than direct hits.

The house and shop have separate feeds from the power company, meters, 
grounds and panels.  "HOWEVER" these feeds come from the same pole 
transformer.  Ground through their neutral is well over 200 feet from 
shop, to pole, to house with ground rods at the shop, pole, and house

NOW, it gets sticky.
I have stations in the house and shop. Both stations (SO2R) use the same 
antenna system of multiple HF, and VHF antennas. There are also 3 runs 
of CAT5 between the house and shop.   Currently there is one tower and 
two masts with a second tower to be added soon.  The antennas have a 
large and elaborate ground system, making impossible to separate the 
grounds for the shop and house.  There is a SPG panel at the coax 
entrance to each building although the one into the shop isn't finished.

As I've said a number of times, the system ground is a network 
consisting of 32, or 33 8' ground rods, CadWelded to over 600 feet of 
bare #2 Copper.

How do I ground all of this safely from a lightening, power company and 
my safety while not risking any equipment?

As I understand lightening is basically a rounded off square wave with 
each hit consisting of multiple strokes of varying intensity and 
frequencies.  Each strokes contains a broad spectrum of RF which because 
of differing  rise and fall times as well as inductance and capacitance, 
has its shape changed with distance and method of conduction.  In any 
dwelling the arrival of the induced voltages should be well ahead of the 
conducted voltages In the small time frame we are looking at.

The only problems I've had are/were from that cat5/6 network.

73

Roger (K8RI)


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73

Roger (K8RI)


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