Thanks Dan, this looks good. We do mostly small residential system.
Wonder if it will be considered "likely to be energized". That's another
bridge. Thanks again.
Chris
On 10/14/2014 3:23 PM, Daniel Young wrote:
I think the answer also depends on the scale of the project. Are we talking
a small residential system? Or larger commercial/utility? I'd assume
smaller, as you would likely just fence in a larger scale system, solving
the accessibility issue.
For small scale ground mounts, we'll often use the Pro-Solar Ground Trac,
and simply put a strip of aluminum sheet metal (they sell rolls of it for
making custom gutters) between certain rails, using a metal break to give it
1" wings on the side for attaching to the rails. Then we use a liquid tight
to get the PV wire from the cavity, and send it to a J-Box/Combiner/Inverter
on the array. I'm attempting to attach 2 images, hopefully they go through.
This also has the benefit of making the array look very trim.
With Regards,
Daniel Young,
NABCEP Certified PV Installation ProfessionalTM: Cert #031508-90
NABCEP Certified Solar Heating InstallerTM: Cert #SH031409-13
Lead Systems Designer for:
www.dovetailsolar.com
-----Original Message-----
From: RE-wrenches [mailto:[email protected]] On
Behalf Of Christopher Warfel
Sent: Tuesday, October 14, 2014 10:02 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] Wire management devices
Thanks Rob, We have been using Unirac for many years and slow to change
(since we have so much of it in inventory). I think with the difficulty of
pv module disconnects now, and good wire management, a barrier is really a
solution looking for a problem. I'll take a look. Thank you again. Chris
On 10/13/2014 3:54 PM, RE Ellison wrote:
I have mentioned in the past, look into US Solar Mounts, The wire
management is built in!
They have several different styles of mounts and many of them have
wire management built into the frames
Custom-built for each install so you tell him what you're using and
what you need and they will tell you what will work best
Another product that's made in the USA!
Bob Ellison
Bob Ellison
On Oct 13, 2014, at 1:34 PM, Christopher Warfel
<[email protected]> wrote:
I am well aware of all the possibilities of danger in many aspects of
life. This is not a main one in my opinion, and given that there are no
good solutions indicates to me that it is mostly an unsolvable problem
unless you wish to be impractical. All I asked for were products that could
provide a solution. . I have inspected in several states with solar
programs that will not enforce securing electrical enclosures in living
spaces that have access to 240 v. I even seen this situation in a children's
play room.
I think that is more than a little more serious issue.
On 10/13/2014 11:27 AM, William Miller wrote:
Christopher:
I believe strongly that the code requirement to protect PV wires
from unauthorized personnel is justified. Ground mount arrays are
essentially jungle gyms and could attract children to climb. If a
50 pound child inadvertently swings on a PV cable across a sharp
metal edge the insulation could easily be compromised. The current
limited nature of PV means the current will sink through the short
until the short is opened, leaving up to
600 volts at fatal amperage exposed to the touch. Inadequate ground
fault interruption technology does little to prevent the problem.
You cannot legally install a convenience receptacle at any height
above ground with the individual conductors exposed, so why should
one be allowed to install PV with individual conductors readily
accessible?
I grant you that shielding PV wiring on a ground mount is a
difficult process. It is very unfortunate that the industry has
been allowed to evolve without developing decent wire management
hardware in the process.
If you are not aware of the work we have done on wire management
solutions, you might visit our website where we share all of our
ideas. We are giving away trade secrets, but I feel a moral
obligation to help everyone in the industry deliver a safe product.
Most sincerely,
William Miller
Lic 773985
millersolar.com
805-438-5600
-----Original Message-----
From: RE-wrenches [mailto:[email protected]]
On Behalf Of Christopher Warfel
Sent: Monday, October 13, 2014 5:56 AM
To: [email protected]
Subject: Re: [RE-wrenches] Wire management devices
Thanks all, I don't see a good solution to what I think is a
non-existent problem. I believe that anyone who wants to pull apart
dc subarray conductors is attempting to vandalize. It's not easy to
do, and you really have to be wondering why someone would even try.
Why don't we put all electrical outlets 8 feet off the ground?
On 10/13/2014 2:27 AM, William Miller wrote:
Friends:
I looked at the Solarmount web site and I don't think the product
complies-- the wire management leaves leads exposed. It's a nice
start,
however.
I was asked by Homepower to do an article on wire management. I
was flattered they'd ask, but I had to decline because there is so
few options off-the-shelf that I can recommend.
William
Lic 773985
millersolar.com
805-438-5600
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