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I would use a SS washer with integrated Neoprene rubber gasket. We
use them on roof work, and Unirac uses them under the lag on their
roof flashings. <br>
<img src="cid:part1.02090102.09000100@solarray.com" alt="Image
result for neoprene washers"><br>
<a class="moz-txt-link-freetext" href="https://www.copperstate.com/shop/429/neoprene-washers">https://www.copperstate.com/shop/429/neoprene-washers</a><br>
<br>
Thanks,<br>
<pre class="moz-signature" cols="72">R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760</pre>
<div class="moz-cite-prefix">On 1/28/2016 8:25 AM, Jay wrote:<br>
</div>
<blockquote
cite="mid:18D468F6-F3DF-496E-9B5A-AF6C1A7218EA@gmail.com"
type="cite">
<meta http-equiv="content-type" content="text/html;
charset=windows-1252">
<div>Hi Larry</div>
<div><br>
</div>
<div>I wasn't planning on installing anything between al and al.
Just between SS and al. So the module will still be bolted
directly to the al rack material. I'm not too worried about the
grounding, and certainly not worried enough to install lay in
lugs with copper to each module. </div>
<div><br>
</div>
<div>As lones pointed out, there are parts that would insulate the
bolt. </div>
<div>But as the owner hasn't requested that, not going to suggest
it!</div>
<div><br>
</div>
<div>I sure didn't plan on stirring the pot like this. </div>
<div>Just really wanted some help on sourcing the washers</div>
<div><br>
</div>
<div>Thanks</div>
<div><br>
</div>
<div>Jay</div>
<div>Peltz power</div>
<div><br>
On Jan 28, 2016, at 6:49 AM, Starlight Solar Power Systems <<a
moz-do-not-send="true" href="mailto:larry@starlightsolar.com"><a class="moz-txt-link-abbreviated" href="mailto:larry@starlightsolar.com">larry@starlightsolar.com</a></a>>
wrote:<br>
<br>
</div>
<blockquote type="cite">
<div>
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
Hey Jay,
<div class=""><br class="">
</div>
<div class="">I’m still trying to picture this and had a
thought: If you isolate the module from the rack
electrically with these washers, and both are grounded, and
the two grounds are not at the same potential (different
length ground runs), you may be creating a path for high
voltage into the array in event of a near lightning strike. </div>
<div class=""><br class="">
</div>
<div class="">Also, if the washer is between the two metals,
how will you isolate the bolt that puts them together from
not touching the sides of the holes? Perhaps you need to
look into non-conductive fasteners as well.</div>
<div class="">
<div apple-content-edited="true" class="">
<div style="color: rgb(0, 0, 0); letter-spacing: normal;
orphans: auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; widows: auto;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
word-wrap: break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space;" class="">
<div style="color: rgb(0, 0, 0); letter-spacing: normal;
orphans: auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; widows:
auto; word-spacing: 0px; -webkit-text-stroke-width:
0px; word-wrap: break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space;" class="">
<div style="color: rgb(0, 0, 0); letter-spacing:
normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px; word-wrap:
break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space;" class="">
<div style="color: rgb(0, 0, 0); letter-spacing:
normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none;
white-space: normal; widows: auto; word-spacing:
0px; -webkit-text-stroke-width: 0px; word-wrap:
break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space;" class="">
<div style="color: rgb(0, 0, 0); font-family:
Helvetica; font-style: normal; font-variant:
normal; font-weight: normal; letter-spacing:
normal; line-height: normal; orphans: 2;
text-align: -webkit-auto; text-indent: 0px;
text-transform: none; white-space: normal;
widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; word-wrap:
break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space;" class=""><br
class="">
Larry Crutcher<br class="">
Starlight Solar Power Systems<br class="">
<br class="">
</div>
<div style="color: rgb(0, 0, 0); font-family:
Helvetica; font-style: normal; font-variant:
normal; font-weight: normal; letter-spacing:
normal; line-height: normal; orphans: 2;
text-align: -webkit-auto; text-indent: 0px;
text-transform: none; white-space: normal;
widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; word-wrap:
break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space;" class=""><br
class="">
<br class="">
</div>
</div>
</div>
</div>
</div>
</div>
<br class="">
<div>
<div class="">On Jan 27, 2016, at 6:44 PM, Jay <<a
moz-do-not-send="true"
href="mailto:jay.peltz@gmail.com" class=""><a class="moz-txt-link-abbreviated" href="mailto:jay.peltz@gmail.com">jay.peltz@gmail.com</a></a>>
wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<meta http-equiv="content-type" content="text/html;
charset=windows-1252" class="">
<div dir="auto" class="">
<div class="">Ok here is the long form. </div>
<div class=""><br class="">
</div>
<div class="">Customers system is in Mexico, Baja. So
I'm not concerned about legal issues. </div>
<div class="">It is a custom racking design to fit his
house. </div>
<div class="">Flat concrete roof,low tilt design with
extra heavy duty engineering for hurricanes. Easy
access for future MX of all fasteners</div>
<div class="">Owner lives on his own island in the
South Pacific. </div>
<div class="">This is his 2nd ( more?) house. </div>
<div class=""><br class="">
</div>
<div class="">He wants this. I've told him all of what
you all and have said including that there will need
to be future mx to check bolt tightness. </div>
<div class=""><br class="">
</div>
<div class="">I am going to do it for him. </div>
<div class="">Thanks for all the advice on where to
get look for the parts he's looking for.</div>
<div class=""><br class="">
</div>
<div class="">Jay</div>
<div class=""><br class="">
</div>
<div class="">Peltz power. </div>
<div class=""><br class="">
</div>
</div>
</div>
</div>
<br class="">
</div>
</div>
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