<p dir="ltr">Our house is on the ocean, in the Caribbean. If you are using something like SnapNRack, where a stainless bolt goes through an aluminium channel nut, use Permatex or it will seize. Other than that, I have not seen racking corrosion in eight years on the roof. Put all the clamps, bolts, nuts etc, in a bucket and spray it all with Permatex anti seize. It will be messy but very effective. You'll have fingerprints on the modules but oh, well.</p>
<div class="gmail_quote">On Jan 28, 2016 2:16 PM, "Ray Walters" <<a href="mailto:ray@solarray.com">ray@solarray.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
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 href="https://www.copperstate.com/shop/429/neoprene-washers" target="_blank">https://www.copperstate.com/shop/429/neoprene-washers</a><br>
<br>
Thanks,<br>
<pre cols="72">R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
<a href="tel:303%20505-8760" value="+13035058760" target="_blank">303 505-8760</a></pre>
<div>On 1/28/2016 8:25 AM, Jay wrote:<br>
</div>
<blockquote type="cite">
<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 href="mailto:larry@starlightsolar.com" target="_blank"><a href="mailto:larry@starlightsolar.com" target="_blank">larry@starlightsolar.com</a></a>>
wrote:<br>
<br>
</div>
<blockquote type="cite">
<div>
Hey Jay,
<div><br>
</div>
<div>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><br>
</div>
<div>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>
<div>
<div style="color:rgb(0,0,0);letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word">
<div style="color:rgb(0,0,0);letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word">
<div style="color:rgb(0,0,0);letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word">
<div style="color:rgb(0,0,0);letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word">
<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;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word"><br>
Larry Crutcher<br>
Starlight Solar Power Systems<br>
<br>
</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;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word"><br>
<br>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
<div>
<div>On Jan 27, 2016, at 6:44 PM, Jay <<a href="mailto:jay.peltz@gmail.com" target="_blank"><a href="mailto:jay.peltz@gmail.com" target="_blank">jay.peltz@gmail.com</a></a>>
wrote:</div>
<br>
<div>
<div dir="auto">
<div>Ok here is the long form. </div>
<div><br>
</div>
<div>Customers system is in Mexico, Baja. So
I'm not concerned about legal issues. </div>
<div>It is a custom racking design to fit his
house. </div>
<div>Flat concrete roof,low tilt design with
extra heavy duty engineering for hurricanes. Easy
access for future MX of all fasteners</div>
<div>Owner lives on his own island in the
South Pacific. </div>
<div>This is his 2nd ( more?) house. </div>
<div><br>
</div>
<div>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><br>
</div>
<div>I am going to do it for him. </div>
<div>Thanks for all the advice on where to
get look for the parts he's looking for.</div>
<div><br>
</div>
<div>Jay</div>
<div><br>
</div>
<div>Peltz power. </div>
<div><br>
</div>
</div>
</div>
</div>
<br>
</div>
</div>
</blockquote>
<blockquote type="cite">
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