[RFI] w7ekb & ground rods

[donovanf at starpower.net]

Hi Ed, 

You're doing it right, the idea is to avoid galvanic corrosion. 
Galvanized ground rods should be used with galvanized towers 
and copper ground rods should be used with buildings, 

73 
Frank 
W3LPL 

----- Original Message -----

From: "EDDIE J EDWARDS" <eedwards at oppd.com> 
To: "donovanf at starpower.net" <donovanf at starpower.net>, rfi at contesting.com 
Sent: Friday, January 16, 2015 9:47:37 PM 
Subject: RE: [RFI] w7ekb & ground rods 



Frank, 

You might know this since you have some tall towers up in the air. 

Did the contradictions between NEC (copper ground rods) and EIA/TIA-222F (12.2.2-galvanized steel ground rods) ever get resolved? At work we follow NEC on comm buildings and are forced to follow 222 on tower structures. 

The only place we’ve actually used some new galvanized steel ground rods was on guy wire grounds on our 500 ft towers and only in the southeast part of Nebraska with the known soil problems for galvanic corrosion. That was after an inspection we found 1.5 to 2 inch holes on 4 inch anchors and the copper rods almost totally gone. 

73, de ed –K0iL 



From: donovanf at starpower.net [mailto:donovanf at starpower.net] 
Sent: Thursday, January 15, 2015 7:35 PM 
To: rfi at contesting.com 
Cc: EDWARDS, EDDIE J; DWKANEPE at aol.com 
Subject: Re: [RFI] w7ekb & ground rods 


NEC quotes relevant to this discussion: 

Not less than two driven ground rods placed at a minimum of 6 feet 
apart when a non-metallic water piping system exists or is to be installed. 

A separate grounding conductor to each ground rod shall be utilized 

The grounding electrode conductor shall be solid or stranded , sized in 
accordance with the requirements of the NEC but shall in no case be less 
than No. 6 AWG copper or No. 4 AWG aluminum or copper-clad aluminum. 

All ground rods will be required to be minimum 1/2" x 8' copper weld or 
5/8” x 8’ copper plated only. 

No galvanized rods or piping will be accepted as a grounding electrode. 

73 
Frank 
W3LPL 



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