[RE-wrenches] Attaching Ground To Steel Frame

[Ray Walters]

To be clear, the screws I'm recommending are not a sheet metal screws, 
they have 12-24 threads like large ground screws.  It just drills and 
taps in one shot.  In 1/8" or thicker metal, it gets the code required 
minimum 2-1/2 threads of contact.  As I stated in my first post, regular 
sheet metal screws won't work.

Ray Walters
Remote Solar

On 1/28/2025 5:50 PM, William Miller via RE-wrenches wrote:
>
> Practices:
>
> I would avoid the use of any kind of sheet metal screw.  Those are 
> expressly prohibited in the Code.  I would research problems with 
> dissimilar metals and find readily available solutions for the 
> problem.  These is likely no problem one of us can face that has not 
> been faced before by someone, somewhere.  Find out what others have done.
>
> Once you educate yourself you will then have the tools to modify your 
> approach, if needed, or to argue your case if you are convinced your 
> approach is correct.
>
> I hope this helps.
>
> William Miller
>
> Miller Solar
>
> 17395 Oak Road, Atascadero, CA 93422
>
> 805-438-5600
>
> www.millersolar.com <http://www.millersolar.com/>
>
> CA Lic. 773985
>
> *From:*RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] 
> *On Behalf Of *Mark Frye via RE-wrenches
> *Sent:* Tuesday, January 28, 2025 12:33 PM
> *To:* RE-wrenches
> *Cc:* Mark Frye
> *Subject:* [RE-wrenches] Attaching Ground To Steel Frame
>
> Folks,
>
> I am going to have a steel frame for my stand alone power supply to be 
> dropped on the ground out in the elements.
>
> I was planning to weld a stainless bolt to the mild steel frame to 
> provide a corrosion resistant point of connection.
>
> I am getting a lot of push back on this.
>
> What are other folks do to create a connection for a system grounding 
> electrode conductor on a piece of equipment like this?
>
> Thanks,
>
> Mark Frye
>
>
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