[TowerTalk] Ground strap to water pipe

[Gary Schafer]

You don't want a zinc clamp. It will be fine with the water pipe but not 
with the copper wire / strap.

Bronze clamps (not brass) are ok with both galvanized and copper. But 
you still do not want the copper touching the galvanized pipe. If you 
were connecting a copper wire to the galvanized pipe then one of those 
bronze ground clamps  with the separate screw for the wire would be just 
fine. You still could use it with the strap but you will not be able to 
use the full surface area of the strap to clamp to.

The stainless is fine with both galvanized and copper.

73
Gary  K4FMX




Martin, AA6E wrote:
> Some are saying stainless steel is the right stuff to put between
> copper and zinc (galvanized).  Rob thinks brass is the right material.
>  Zinc to galvanizing (zinc dip) is obviously harmless (no
> electrochemistry), but my question is how to connect copper to
> galvanized steel.  It's nice to know the Code (no code?), but an
> RF/protective ground wouldn't fall under the Code, would it? An
> authoritative reference would be nice.
> 
> dit-dah-dit-dah-dit
> 
> 73 Martin AA6E
> 
> On 5/10/05, ny6dx at netscape.net <ny6dx at netscape.net> wrote:
> 
>>This info is wrong...You need to use a Zinc ground strap to Galvanized pipe.This can be found in the National Electric Codebook.2005 version
>>
>>
>>"Rob Atkinson, K5UJ" <k5uj at hotmail.com> wrote:
>>
>>
>>>You need a brass clamp on the galv. steel pipe as a go-between for your
>>>copper strap. Home Depot sells a brass pipe clamp with the copper hardware
>>>attached to bolt your strap to. Or else if you go in the back where they
>>>have their ground rods, conduit and other electrical stuff you will find the
>>>clamps and hardware to work something out. you just have to fix it so the
>>>copper is clamped to the brass, and the brass is on the pipe so the cu and
>>>steel don't touch each other.
>>>
>>>Rob/K5UJ
>>>
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>>
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> 
> 
>