Make sure you use black cable ties, the white ones fail in UV from sunlight.
On Thu, Apr 25, 2013 at 11:06 AM, August Goers <aug...@luminalt.com> wrote: > I too share the concern about standard plastic zip ties. However, I > started in the industry in 1997 and have yet to see zip ties that are > falling apart. Does anyone on the list have firsthand experience with > failed plastic zip ties? > > > > Best, > > > > August > > > > > > August Goers > > > > Luminalt Energy Corporation > > 1320 Potrero Avenue > > San Francisco, CA 94110 > > m: 415.559.1525 > > o: 415.641.4000 > > aug...@luminalt.com > > > > *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto: > re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Solarguy > > *Sent:* Thursday, April 25, 2013 7:08 AM > *To:* 'RE-wrenches' > *Subject:* Re: [RE-wrenches] Stainless Steel Cable Ties > > > > We have used 8” flat SS ties for years and I have no concern about the > wear on the conductor insulation. They are long enough to circle a standard > Unirac rail and several wires leaving 1” or so tag end. Needle nose pliers > work to twist the end and snug down the tie as tight as you’re comfortable > with. The metal tie, once bent around the corners cannot stretch any > tighter, unlike nylon, regardless of how tightly you twist the pliers. As > for the edges, quality ties are not sharp. Or cheap. > > > > Jim Duncan > > North Texas Renewable Energy Inc > > www.ntrei.com > > NABCEP PV 031310-57 > > TECL-27398 > > nt...@1scom.net > > 817.917.0527 > > [image: NABCEP Logo] > > > > > > > > *From:* re-wrenches-boun...@lists.re-wrenches.org [ > mailto:re-wrenches-boun...@lists.re-wrenches.org<re-wrenches-boun...@lists.re-wrenches.org>] > *On Behalf Of *Jason Szumlanski > *Sent:* Thursday, April 25, 2013 8:08 AM > *To:* RE-wrenches > *Subject:* Re: [RE-wrenches] Stainless Steel Cable Ties > > > > There was a recent thread about wire management. Heyco SunBundler ties > have a vinyl coating. I recommended the clips from PV Racking that are > stainless steel coated in rubber. I've had the same concern, and both of > these seem like good solutions to me. > > > > *Jason Szumlanski** * > > *Fafco Solar* > > > > On Thu, Apr 25, 2013 at 1:20 AM, Benn Kilburn - DayStar Renewable Energy < > b...@daystarsolar.ca> wrote: > > Wrenches, > > I searched the archives, but came up with nothing on this…. > > > > I have found a good supplier for reasonably priced stainless steel cable > ties and have been using them in place of black nylon cable ties for > supporting cables, PV wires and micro-inverter wires to the mounting rails > and such. I feel better knowing the wires under the array are supported > this way rather than with plastic/nylon cable ties, for which I tried but > cannot get a manufacturer to guarantee will last 20+yrs. > > > > A colleague is questioning this method (SS ties) with the concern that > over time the (albeit small) movement in the wires and/or > expansion/contraction of the rails could result in the stainless steel > cable ties cutting thru the wire's insulation and then….. > > I have heard this concern before from others as well. > > > > The way I see it is that the very popular stainless steel "S" cable clips > that hold wires to module frames have comparable equal sharp edges as well > and would pose the same risk, but there doesn't seem to be any concern > there. > > > > I am wondering who else is using SS ties in place of nylon ones, and if > you are taking additional steps to protect the wire's insulation from the > SS ties? > > Common sense abides, meaning don't wrap a wire around the SS ties so that > the wire has tension on the sharp edge of the tie. Flat edge contact with > the wire only, the same way that you wouldn't run a wire across/around a > sharp cut edge of a rail or anything else. > > > > Thanks, > > benn > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Change email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Change email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > > -- Chris Mason President, Comet Systems Ltd www.cometenergysystems.com Cell: 264.235.5670 Skype: netconcepts
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