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I would like to suggest you contact Heary Brothers<a href="https://www.hearybros.com/"> https://www.hearybros.com/</a>
<div>They have designed and I have installed Lightning Protection at almost 11,000 foot elevation that literally the owner has said in the middle of a lightning storm. He has seen lightning shooting down on all sides of his house and the house was never struck
and the solar away was never affected.</div>
<div>I had my concerns when I first installed the system, and after his testimonial, I was firmly convinced these guys really know what they\u2019re doing<br id="lineBreakAtBeginningOfSignature">
<div dir="ltr">Dana Orzel - dana@solarwork.com - 208.721.7003</div>
<div dir="ltr"><br>
<blockquote type="cite">On Jan 28, 2025, at 7:35\u202fPM, Mark Frye via RE-wrenches <re-wrenches@lists.re-wrenches.org> wrote:<br>
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<p class="MsoNormal">Thanks Everyone for your feedback.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I will try and respond to all here.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The skid is a stand-alone power supply for GPS equipment that will be deployed to large scale solar installation sites.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">It will not be subject to UL or NEC requirements, all though I do try to keep them well in mind.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">It will be a welded steel frame that will be dropped on the ground at a propitious location on a job site and left in operation for 3 to 18 months at a time.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The power supply is a AGM battery/PV system driving 12VDC and 24VDC busses for various radio equipment.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">There will be two 8\u2019 copper clad rods installed near the skid, about 6 feet apart to establish a system and a lightning grounding electrode.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The unit will have a UHF antenna lofted to 20 feet and the coax cable will lead to a lightning protection device with will in turn be connected to the lightning GE with a GEC.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The steel frame will have a stud for attaching a GEC that will run to the system GE.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The negative of the battery bank will attached to its own stud on the frame. An equipment grounding conductor will also run to this stub. This EGC and the Battery \u201c-\u201c run back to a control panel that houses the power electronics including
MorningStar Genstar DC System Controller.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My quandary is how to fabricate the two studs on the frame in a way that I can have durable connections to the GECs.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I like welding SS bolts to the mild steel frame and using SS hardware.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have had one welding shop tell me that this is no big deal as long as you use a TIG and a 309L rod.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I can also just have a mild steel bolt welded to the frame, wire brush the stud before applying No-Ox, and tightening on a cable lug or compression lug with SS hardware.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">That is the tempest which resides in in my tea cup.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Mark<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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