So far I am not convinced about using concrete. I'm going to do some resistance
testing on the concrete in my yard.
Best regards - Brian Carling
AF4K Crystals Co.
117 Sterling Pine St.
Sanford, FL 32773
Tel: +USA 321-262-5471
> On Jan 20, 2015, at 10:13 AM, Grant Saviers <grants2@pacbell.net> wrote:
>
> If your house slab was installed correctly with a vapor barrier and/or foam
> insulation, then it is insulated electrically from earth.
> Tower bases make good Ufers as do perimeter foundations, so my towers and
> shop both had the rebar set as Ufers when constructed.
> I also noticed that a new service transformer I had installed is set on a
> concrete vault that has a ground stub cast into the side. The power company
> used it, no ground rods. I'd estimate its surface area in contact with earth
> as more than 16 sq ft. Compare that to less than 2 sq feet for a 10' 3/4"
> ground rod.
>
> Grant KZ1W
>
>
>> On 1/19/2015 6:52 PM, Mike Reublin NF4L wrote:
>> The electrician I had (who does a LOT of grounding work here) come out to
>> connect my tower ground to the service ground told me he would be glad to
>> drive the extra rods extending out from the tower, but doing so would add no
>> benefit at all. I have no idea if this is true or not. At some point,
>> lacking personal knowledge, ya have to take someone's word for it. My tower
>> megged out at 4 ohms.
>>
>> Mike NF4L
>>
>>> On Jan 19, 2015, at 8:29 PM, Brian Carling <bcarling@cfl.rr.com> wrote:
>>>
>>> The advice varies about this considerably. This week is the first time I've
>>> even heard of UF ER or conductive concrete!
>>>
>>> The professional experts that I know recommend putting a 20 to 30 foot
>>> ground rod into the ground at each corner of your house and connecting
>>> heavy gauge copper conductors up to lightning rodsup on the roof.
>>>
>>> It seems like if the only thing you need is a large area of this allegedly
>>> conductive concrete stuck in the ground, why not ground everything to the
>>> concrete slab your house sits on!!
>>>
>>> Best regards - Brian Carling
>>> AF4K Crystals Co.
>>> 117 Sterling Pine St.
>>> Sanford, FL 32773
>>>
>>> Tel: +USA 321-262-5471
>
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