Hi William;
Based on your rhetorical question and many zip tie failures, I try to
run the wiring over the framing so that a zip tie failure doesn't just
leave 10 ft of wiring dangling, I also throw in insulated SS wire clamps
in too. We then just use zips to make it tidy. My thinking is when the
zips fail, it won't look as good, but it won't be a total hazard either.
Still waiting for a better wire management product......
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 8/25/2015 10:50 PM, William Miller wrote:
James:
Thanks for getting back to me. I think the Navy did a study on the
longevity of zip ties. I will look for it and share it.
4-5 or 8 years is beyond most installation warranty periods, so we
contractors are not liable. Good news!
4-5 or 8 years is far short, however, of any module warranty period.
This leaves the awkward question: What does one do with a perfectly
good PV array with the wiring falling down? And another question: Do
unsecured high voltage PV leads pose a danger?
These are rhetorical questions. Please don't feel they require an answer.
Aloha.
William
On Aug 25, 2015, at 5:52 PM, James Rudolph <[email protected]
<mailto:[email protected]>> wrote:
Aloha William,
So far 8+ years under the module in the shade, and about 4-5 if there
in direct sunlight.
On Thu, Aug 20, 2015 at 6:30 PM, William Miller
<[email protected] <mailto:[email protected]>> wrote:
James:
How long do your black "zips" hold up?
William
On Aug 20, 2015, at 5:18 PM, James Rudolph
<[email protected] <mailto:[email protected]>> wrote:
Aloha,
We use GeoCell 4500 (Black) daily for years with no problems
here in Hawaii ($4.99 a tube). I have also heard that black zips
or sealant holds up better in the UV light, and my field
experience seems to validate this.
On Tue, Aug 11, 2015 at 5:09 PM, Ray Walters <[email protected]
<mailto:[email protected]>> wrote:
I've used Lexel before, it's the best clear caulk I've
used. I used it even to repair cracks on plastic lens on
concentrating modules. It holds its clarity for a long
time, however I don't know if its approved for asphalt
shingles.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760 <tel:303%20505-8760>
On 8/11/2015 12:01 PM, Kevin Pegg wrote:
At recommendation from a roofer couple years ago, we have
been using this product:
http://www.sashco.com/products/lexel/
Not used long enough to know if it stands the test of time.
Kevin
-----Original Message-----
*From:* RE-wrenches
[mailto:[email protected]]*On
Behalf Of *August Goers
*Sent:* August 10, 2015 2:53 PM
*To:* RE-wrenches
*Subject:* [RE-wrenches] clear sealant recommendations
Hi Wrenches,
For the most part we are using Chemlink M1 sealant for
to seal our rooftop penetrations. It hasn’t let us down
yet.
M1 is a available in several opaque colors and grey is
the most common. Sometimes we want a good quality clear
sealant to put around conduit fittings, where our
conduit enters buildings, etc. We used Geocell 2300 in
the past and I don’t have anything bad to say to it but
our current supplier doesn’t carry Geocell products.
More recently we’ve tried Chemlink Clear sealant but
I’ve already seen signs that it doesn’t hold up well in
the elements – it seems to peel off the surface it was
installed on and turn brown relatively fast.
Does anyone have a good multipurpose clear sealant that
they like?
Best,
August
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