Drake:
Who is manufacturing the racking? DPW has worked with us to develop some
screening options. WE have also developed our own screening (and wire
management) procedures. We spend a lot of time creating these procedures
we keep them to ourselves to prevent local competitors from stealing
appropriating ideas. I can give you more ideas off list.
I think we all need to be calling racking manufacturers and requesting they
develop screening and wire management options for their products.
William Miller
At 09:34 AM 10/21/2010, you wrote:
Hello Wrenches,
We are installing a ground mount system with Enphase inverters. 690.31
requires readily accessible source and output conductors OPERATING at over
30 volts to be installed in a raceway. The Vmp of the REC230PE modules is
29.4 volts. Of course it would go higher in cold weather. Do I have any
argument that would allow us to not install the DC conductors in a raceway?
The NEC Handbook comments "Most PV modules do not have provisions for
attaching raceways. These circuits may have to be made "not readily
accessible" by use of physical barriers such as wire screening".
I have heard of a green screening material that has been used on the E, W
and N sides of ground mounts to render the area not readily
accessible. Does anyone know what this is? What else would work that
would be more cost effective than running a chain link fence around the array?
Thanks,
Drake
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