Sounds like a very nice install Dave, I'd like to see pictures if you
could.
Thanks,
R. Walters
[email protected]
Solar Engineer
On Nov 10, 2009, at 6:51 PM, David Palumbo wrote:
William,
From 2008 Handbook (actual codebook is not at my desk at this time).
IV. Wiring Methods
690.31 Methods Permitted
(A) Wiring Systems. All raceway and cable wiring Methods included
in this Code and other wiring systems and fittings specifically
intended and identified for use on photovoltaic arrays shall be
permitted. Where wiring devices with integral enclosures are used,
sufficient length of cable shall be provided to facilitate
replacement.
Where photovoltaic source and output circuits operating at maximum
system voltages greater than 30 volts are installed in readily
accessible locations, circuit conductors shall be installed in a
raceway.
Highlighted note in Handbook: 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.
It goes on with a FPN on temperatures and then continues with
sections (B) thru (F); which someone with the CD could paste for us.
I assumed you were interested primarily in (A) William. We are using
a screening method on DPW TPM that works well for us. We are using
an outdoor plastic lattice, white in color, that we buy at Lowes and
custom cut for our specific needs. We use it to screen any MC cables
that are within 8 feet of ground level. I could send anyone
interested a picture if they e-mail and request. To bring our wiring
down from the PV modules we enter the DPW gimbal thru a Hubbell ¾”
90 degree cord grip (DPW has a knock out for such) and then we exit
the steel pipe mast directly into the back of a PVC j-box thru a
2-1/2” hole we make in the pipe, we weld a 6x6 plate onto the hole
for the j-box and protect the wiring coming out of the pipe mast
with a short piece of PVC that is bushed on both ends. After the j-
box we are all SCHD 80 PVC before transitioning to schedule 40 under
ground.
Dave
From: [email protected] [mailto:re-wrenches-
[email protected]] On Behalf Of William Miller
Sent: Tuesday, November 10, 2009 6:14 PM
To: RE-wrenches
Subject: [RE-wrenches] 2008 690.31
Friends:
I have not received my 2008 NEC on CD. Pending it's arrival, could
one of you good folks please post 690.31 to the wrenches as a
personal favor to me?
Thanks in advance.
William Miller
Please note new e-mail address and domain:
William Miller
Miller Solar
Voice :805-438-5600 Fax: 805-438-4607
email: [email protected]
http://millersolar.com
License No. C-10-773985
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