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Roy,<br>
I have always coated terminals before assembling them, then added a
final coat to the tightened terminal assemblies. That's just how I
was taught years ago and never saw reason to change. It's also one
of the tasks I give a homeowner who wants to get involved in some
parts of the installation; owners tend to like this, and it saves
them money doing a careful but tedious task. But I haven't knowingly
had the problem Russ has described.<br>
Allan<br>
<br>
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<p class="MsoNormal" style=""><span class="il"><b style="">Allan</b></span><b
style=""> Sindelar</b><span style="font-size: 10pt;"><br>
<a href="mailto:Allan@positiveenergysolar.com"
target="_blank"><span class="il">Allan</span>@positiveenergysolar.com</a><br>
NABCEP Certified Photovoltaic Installer<br>
EE98J Journeyman Electrician<br>
<b style="">Positive Energy, Inc.</b><br>
3201 Calle Marie<br>
Santa Fe, New Mexico 87507<br>
<b style="">505 424-1112</b><br>
<a href="http://www.positiveenergysolar.com/"
target="_blank">www.positiveenergysolar.com</a></span></p>
</div>
</div>
<br>
On 2/22/2011 5:29 PM, Roy Butler wrote:
<blockquote cite="mid:4D6454E6.1050409@four-winds-energy.com"
type="cite">
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
<font size="-1">Allan,<br>
<br>
I used Quick Cote for years until my local supplier had problems
getting it in a timely manner.<br>
I never had a problem with it but then again, I never put it on
the lug/ terminal mating surfaces<br>
prior to making the connections. Then I carefully coated the
terminals, making sure to not<br>
miss any spots.<br>
<br>
I've had several opportunities to have a look at the mating
surfaces years later and never found<br>
any corrosion. I would imagine that grit would indeed create a
connection problem. But you say<br>
you've never seen this yourself?<br>
<br>
I wonder if the formulation has been changed recently?<br>
</font>
<pre class="moz-signature" cols="72">Roy Butler
NABCEP Certified Solar PV Installer®
NYSERDA eligible PV & wind installer
PA Sunshine Program Approved PV Installer
Four Winds Renewable Energy, LLC
8902 Route 46
Arkport, NY 14807
607-324-9747
<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="http://www.four-winds-energy.com">www.four-winds-energy.com</a>
Although no trees were killed in the sending of this message,
a large number of electrons were terribly inconvenienced.
</pre>
<br>
On 2/22/2011 7:12 PM, Allan Sindelar wrote:
<blockquote cite="mid:4D6450D0.7040005@positiveenergysolar.com"
type="cite">
<meta http-equiv="content-type" content="text/html;
charset=ISO-8859-1">
Wrenches,<br>
Russ in our Taos office sent me the following query. I haven't
seen this problem before and told him so, but others among you
may know more. <br>
<br>
What problems if any have you had with Quick-Cote battery
terminal coating? What else works really well and lasts the life
of the batteries?<br>
<br>
From Russ:<br>
We just had a situation involving Quick Cote on battery
terminals that has made us question its use for coating battery
terminals and cable lugs. We just installed a bank of HUPs on
Monday using Quick Cote. First we lost power with just the
Trimetric and MX60 powered up -- using an ohmmeter I found the
problem to be a single jumper -- I got 7 megohms across two
battery terminals connected by a jumper -- so I replaced the
jumper and got the Trimet and MX60 powered up again. Then, when
I powered up the OutBack inverters, there were sparks on the
battery terminals, and the power cut out again. At that point I
guessed that the problem must lie with the Quick Cote, since
ours has tiny crystals in it (it feels gritty), and I thought
those crystals must be holding the cable lugs off the battery
terminals a tiny bit. Sure enough, Mark and I took the cables
off, wiped off the Quick Cote from the contact surfaces and
applied vaseline, and when we powered up the system, no sparks.
(So, the jumper I removed probably wasn't to blame for the first
loss of power.)<br>
<br>
Our container of Quick Cote stayed on the truck (which stays
parked outside) during the seriously cold weather we got this
winter, so it probably froze. I'm guessing that's when the
crystals formed. Nowhere on the Quick Cote label does it say to
keep it from freezing though.<br>
<br>
We're going to go back out to another job to wipe off the Quick
Cote from the contact surfaces of the battery terminals and
cable lugs, since we just installed four new batteries there and
used Quick Cote, and I remember it being gritty at that time as
well.<br>
<br>
Is your Quick Cote gritty?<br>
<br>
Russ<br clear="all">
<br>
<br>
I told Russ that it always has been gritty. When it's dried out
in the can (they often leak), I have added an oil-based carrier
to thin it - usually WD40, as it's on the truck - and it's
always mixed easily. So it's definitely solvent-based and
shouldn't be affected by freezing.<br>
<br>
I haven't had this problem before. I have found terminal bolts
too loose and that has caused failures, but never the coating.<br>
<br>
Thank you,<br>
Allan<br>
<br>
<div class="Section1">
<p class="MsoNormal" style=""><span class="il"><b style="">Allan</b></span><b
style=""> Sindelar</b><span style="font-size: 10pt;"><br>
<a moz-do-not-send="true"
href="mailto:Allan@positiveenergysolar.com"
target="_blank"><span class="il">Allan</span>@positiveenergysolar.com</a><br>
NABCEP Certified Photovoltaic Installer<br>
EE98J Journeyman Electrician<br>
<b style="">Positive Energy, Inc.</b><br>
3201 Calle Marie<br>
Santa Fe, New Mexico 87507<br>
<b style="">505 424-1112</b><br>
<a moz-do-not-send="true"
href="http://www.positiveenergysolar.com/"
target="_blank">www.positiveenergysolar.com</a></span></p>
</div>
<br>
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