[RE-wrenches] Stainless Steel Cable Ties

[Jason Szumlanski]

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 <
benn at 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
>
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