[RE-wrenches] Tray cable with PV-Wire on roof

[August Goers]

Hi Davis,



I have used Snake Tray with good results:



http://www.snaketray.com/product-catalog/solar-snake-tray/



In our case we did not use a cover although I have some concern about
longevity of USE-2/PV wire in the sun. I've never actually seen USE-2 or PV
wire become damaged to the point of no return from sun exposure although
the color definitely fades. We also bonded both ends of the tray per NEC
250.97 which added a little complexity to the installation. NEC article 392
Cable Trays is worth reading if you haven't already.



-August





August Goers

Principal

Luminalt Energy Corporation

o: 415.641.4000

m: 415.559.1525

www.luminalt.com





On Jan 28, 2014 4:21 PM, "Davis Terrell" <Davis at mckernongroup.com> wrote:

Wrenches,



Anyone have any experiences with running #10 PV-Wire in a cable tray on a
sloped (albeit slight) roof?  I have to collect a number of home runs along
a 180' stretch of roof and would prefer not to transition on the roof or
penetrate the roof.  I searched the archives and found a few mentions, but
not much info.  Any problems with inspections?  Also, what are thoughts
about fabricating an Aluminum "shroud" of sorts to keep UV off the wires?
Thanks in advance,





Davis Terrell

Project Manager

Green Earth Energy

davis at mckernongroup.com

office: (802) 247-1200

mobile: (802) 989-1661




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