[TowerTalk] Connecting Tower to Ground Rod

[Roger (K8RI) on TT]

On 10/10/2013 8:09 AM, Pete Smith N4ZR wrote:
> Does this standard apply even if, as in my case, the tower is 190 feet 
> from the house entrance? 

The farther the antenna, the less the effect, See the Polyphaser page.
But you do want to provide a better path to ground at the tower to 
prevent the lightening from coming into the house.
Many of us also ground the coax shield to the top and bottom of the tower.

 >Does it need to be a direct, dedicated connection, or could a hardline 
 >shield, for example, be used for the tower to house electrical service 
 >ground connection.  In cross section, even LDF4-50A is a lot beefier 
than >#6.

Using the coax is usually not considered good practice unless the tower 
is a long way out.

73,

Roger (K8RI)

>
> 73, Pete N4ZR
> Check out the Reverse Beacon Network at
> http://reversebeacon.net,
> blog at reversebeacon.blogspot.com.
> For spots, please go to your favorite
> ARC V6 or VE7CC DX cluster node.
>
> On 10/9/2013 11:11 PM, GARY HUBER wrote:
>> National Electrical Code 250.94 will apply to the Rohn Tower and 
>> grounding. A minimum of #6 copper is required for bonding the tower 
>> and ground to the electrical service ground. With the galvanized 
>> tower you don't want a direct copper and galvanizing connection as 
>> when wet there will be electrolytic corrosion. Stainless Steel, and 
>> Aluminum are the most commonly used metals which can be used to 
>> isolate the copper wire from the galvanizing.
>>
>> NOTE: this BONDING of GROUNDS is the minimum REQUIRED for electrical 
>> safety. It is NOT adequate for the dissipation of a direct lightning 
>> strike.
>>
>>
>> 73 ES DX,
>> Gary -- AB9M
>>
>> -----Original Message----- From: Michael Warren
>> Sent: Wednesday, October 09, 2013 5:50 AM
>> To: towertalk at contesting.com
>> Subject: [TowerTalk] Connecting Tower to Ground Rod
>>
>> What standardized method can I use to connect the base of a Rohn 25 to a
>> ground rod driven into the ground very near the base?
>>
>>
>>
>> Michael Warren
>>
>> Ka5rej
>>
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