<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Yea its tough. I’m trying to make sure I do it right ( whatever that is at this point) and what the customer wants.<div class="">I”ll check to see if this meets with his approval. Might be the way to go. </div><div class="">Thanks for the update as to it being tight.</div><div class=""><br class=""></div><div class="">I”m guessing here, but I can hear him say “ yes but that rubber will compress over time, and then we’ll have the SS washer touching the rail”</div><div class="">vs</div><div class="">what everyone else is saying “ that the plastic will fail and then it’ll be SS on AL anyway. </div><div class=""><br class=""></div><div class="">1 step forward, 3 steps back.</div><div class=""><br class=""></div><div class="">jay</div><div class=""><br class=""></div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Jan 28, 2016, at 11:23 AM, Ray Walters <<a href="mailto:ray@solarray.com" class="">ray@solarray.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
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We just had that same concern, but once you torque the connection
down there was no noticeable movement. As someone else mentioned
the plastics can be tough to hold up to UV, temperature,
compression, and thermal cycling. Once that hard plastic cracks and
falls out, you definitely will have a loose connection.<br class="">
<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 11:19 AM, jay wrote:<br class="">
</div>
<blockquote cite="mid:4CDF2CA1-B688-4E14-A859-1D7474A124C6@gmail.com" type="cite" class="">
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My hesitation to that is the compressibility of the neoprene.
<div class=""><br class="">
</div>
<div class="">One of the things I like about nylon or similar hard
plastics is they don’t compress so you do get a ridged
structure. </div>
<div class=""><br class="">
</div>
<div class="">jay</div>
<div class=""><br class="">
</div>
<div class="">peltz power<br class="">
<div class="">
<blockquote type="cite" class="">
<div class="">On Jan 28, 2016, at 10:15 AM, Ray Walters <<a moz-do-not-send="true" href="mailto:ray@solarray.com" class=""></a><a class="moz-txt-link-abbreviated" href="mailto:ray@solarray.com">ray@solarray.com</a>> wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
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<div bgcolor="#FFFFFF" text="#000000" class=""> 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 class="">
<span id="cid:part1.02090102.09000100@solarray.com" class=""><images.jpeg></span><br class="">
<a moz-do-not-send="true" class="moz-txt-link-freetext" href="https://www.copperstate.com/shop/429/neoprene-washers">https://www.copperstate.com/shop/429/neoprene-washers</a><br class="">
<br class="">
Thanks,<br class="">
<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 class="">
</div>
<blockquote cite="mid:18D468F6-F3DF-496E-9B5A-AF6C1A7218EA@gmail.com" type="cite" class="">
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<div class="">Hi Larry</div>
<div class=""><br class="">
</div>
<div class="">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 class=""><br class="">
</div>
<div class="">As lones pointed out, there are parts
that would insulate the bolt. </div>
<div class="">But as the owner hasn't requested that,
not going to suggest it!</div>
<div class=""><br class="">
</div>
<div class="">I sure didn't plan on stirring the pot
like this. </div>
<div class="">Just really wanted some help on sourcing
the washers</div>
<div class=""><br class="">
</div>
<div class="">Thanks</div>
<div class=""><br class="">
</div>
<div class="">Jay</div>
<div class="">Peltz power</div>
<div class=""><br class="">
On Jan 28, 2016, at 6:49 AM, Starlight Solar Power
Systems <<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:larry@starlightsolar.com">larry@starlightsolar.com</a>>
wrote:<br class="">
<br class="">
</div>
<blockquote type="cite" class="">
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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="">
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Larry Crutcher<br class="">
Starlight Solar Power Systems<br class="">
<br class="">
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