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 < [email protected]> 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: [email protected] > > 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 > > >
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