Roger,
The single ground rod that was put outside my service panel was
certainly inadequate. I ran a new #2 solid from the box to a new
ground rod which is then tied into the remaining ground field. At your
location I would place a new ground rod at each service panel then tie
both of these service entries into your tower and shack ground field.
Your lightning protection can be placed just outside your shack entry at
both locations...then tying these demarcation points into the same
large ground field.
Take a look at the Intermatic Panel Surge protector for each of your
service panels. These are great self contained units and even come with
a $10,000 - $25,000 warranty for electrical equipment and appliances
you have connected downstream.
My $0.02,
Jay - KT5E
Roger (K8RI) wrote:
> We've beat the single point ground right into the ground over the past few
> months, but I have a question as to a different approach.
>
> I have two stations, one in my shop and one in the house. I have a 100' 45G
> with the big antennas on it and currently a 40' tower on the West end of the
> shop with the AV-640 vertical, and another mast on the North side of the
> shop with a 144/440 colinear vertical. The 40' Aluminum tower will be
> replaced with 50 to 60' of 25G and most likely it'll get a small tribander.
>
> Eventually the system will be set up (hopefully by next summer) so I will be
> able to use either antenna system from either location. Of course there is
> an extensive ground system under the big tower and a substantial one under
> the tower and mast at the shop. These ground systems tie together.
>
> The interesting part is the shop and the house each have their own
> electrical service and underground feeds even though they both come from the
> same transformer at the road. The ground rod at the shop is not acessible
> although the cable going to it is. However by I can't tie into that cable
> according to code.
>
> Any suggestions as to the grounding? Remember even though they have
> different power feeds both stations will be operating either antenna system.
> (possibly at the same time, just different antennas). This is essentially
> the same as two neighbors using the same antennas.
>
> 73
>
> Roger (K8RI)
>
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