We used to just bundle the PV cables and secure them close to the pivot
point at both the rack and the pole with insulated wire loom clamps. We
always made a big enough loop to handle full articulation, but not too
long so they wouldn't catch on the Combiner box, etc. We also started
using braided ground strap, instead of stranded #6. Braided is made for
movement, stranded #6 would strain harden and break off at the connector.
I'm not sure how flex conduit would do. It definitely could break out
of a plastic J box, I would think. The back and forth motion eventually
wears out things not really made to move. I had lots of trouble with
this issue.
Finally, don't be greedy on tracker settings, I'd keep the total range
of motion to less than a full 180 degrees Azimuth, and probably limit
the tilt some too.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 11/30/2015 8:21 PM, Mac Lewis wrote:
Hi Wrenches,
I'm looking for advice on the best way(s) to secure PV source circuit
wiring on a dual axis tracker. I've never wired one up before and it
seems tricky. This particular tracker is 12 modules, 3 strings. Is
it best to run a flexible conduit up the pole and leave plenty of
excess conduit to create large loops that fluctuate in size throughout
the day? What are some other ideas? How do you avoid abrasion over
time?
Thanks in advance
--
Mac Lewis
*
"Yo solo sé que no sé nada." -Sócrates
*
_______________________________________________
List sponsored by Redwood Alliance
List Address: RE-wrenches@lists.re-wrenches.org
Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
List-Archive:
http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html
List rules & etiquette:
www.re-wrenches.org/etiquette.htm
Check out or update participant bios:
www.members.re-wrenches.org
_______________________________________________
List sponsored by Redwood Alliance
List Address: RE-wrenches@lists.re-wrenches.org
Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
List-Archive:
http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html
List rules & etiquette:
www.re-wrenches.org/etiquette.htm
Check out or update participant bios:
www.members.re-wrenches.org
