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DC breaker systems should be designed similar to AC bolt on breaker
systems that are used for many commercial and industrial applications.
<br><br>
The explanation for the fact that these don't exist has to do with the
cost of designing and listing the equipment. There is no technical reason
that a DC enclosure needs to be any more difficult to wire than an off
the shelf AC box. <br><br>
The AC breakers in any solar enclosure should certainly be standard snap
on breakers. Once the power has been inverted to AC, there is no
reason to require anything other than standard code requirements.
<br><br>
Drake Chamberlin<br>
<i>Athens Electric LLC<br>
OH License 44810<br>
CO License 3773<br>
NABCEP Certified Solar PV <br>
740-448-7328<br>
</i><a href="http://athens-electric.com/">http://athens-electric.com/</a>
<br><br>
At 11:31 PM 10/10/2016, you wrote:<br>
<blockquote type=cite class=cite cite="">My students we just today
complaining about the access to wires on the panel mount breakers. The
lug idea with separators might be a fix. It definitely needs to be done
differently. In class We added another inverter to our package and trying
to install another 175A breaker was a pain. We have a few other DC
breakers in there already. The whole cabinet is basically inaccessible.
<br><br>
Jesse Dahl<br><br>
NABCEP PV Installation Professional<br>
IBEW Local 292 - Electrician <br>
Electrical/Solar PV Instructor - HCC<br><br>
Sent from my iPhone<br><br>
On Oct 10, 2016, at 9:40 PM, Jerry Shafer
<<a href="mailto:jerrysgarage01@gmail.com">jerrysgarage01@gmail.com</a>
> wrote:<br><br>
<blockquote type=cite class=cite cite="">You might want to look at the
square D QO breaker line some are dc rated and voltage rated and are
panel mounted.<br>
Jerry<br><br>
On Oct 10, 2016 3:00 PM, "jay"
<<a href="mailto:jay.peltz@gmail.com">jay.peltz@gmail.com</a>>
wrote:<br>
<dl>
<dd>I”ll chime in here.<br><br>
<dd>Yes the GSLC is a piece of junk. <br>
<dd>However it is UL listed for the job. And while you could put together
something that would work with Airpax breakers together, but it
wouldn’t be UL.<br><br>
<dd>What I do is to swap out all the wires to Arctic ultra flex.
This allows much better movement of the wires with significantly less
stress on the terminals. And if you want to not attach wires
to the back of the breakers then you can and I’ve seen outback do it,
install lay in lugs facing outwards so you can use a screwdriver or allen
key on them. Allows for installation and removal of wire without
removal of the breaker or the plate/breakers. With thimbles of
course. And I can’t find them but I know they make them, shields that
fit between each breaker so the lay in lugs are insulated.<br><br>
<dd>jay<br>
<dd>peltz power<br><br>
<br>
<blockquote type=cite class=cite cite="">
<dd>On Oct 10, 2016, at 4:40 PM, William Miller
<<a href="mailto:william@millersolar.com">william@millersolar.com</a>
> wrote:<br><br>
<dd>Chris:<br><br>
<dd> <br>
<dd>Thank you for the reply. I think you misunderstand me. We
always use the GSLC cabinets. I just don’t like the design
concept that clutters the cabinet with AC and DC breakers that are
difficult to access and block other components. See photo below of
a prewired GSLC Cabinet we were asked to work in. Not a good
scenario.<br><br>
<dd> <br>
<dd>We have created an installation standard using the GSLC that
minimizes the problems inherent with the design. We run all AC
leads to adjacent load centers and we try to minimize the DC breakers in
the cabinet. It is our goal to completely eliminate all breakers
from the removable dead-front. I think it is pretty
self-explanatory why one would not prefer to make connections in a hard
to reach location. <br><br>
<dd> <br>
<dd>Our goal is to constantly improve our installation procedures to
create better, safer and more efficient installations. <br><br>
<dd> <br>
<dd>Also, I don’t need someone to instruct me on how to make a
“finished” looking install. If you are familiar with my work you know
it is as clean as it gets. Review my web site. Below is but
one example of one of our installs.<br><br>
<dd> <br>
<dd>And lastly, “suck it up” is not a very complimentary
phrase. Please, let’s keep it professional.<br><br>
<dd> <br>
<dd>Sincerely,<br><br>
<dd> <br>
<dd>William Miller<br><br>
<dd> <br>
<dd><image007.jpg><br><br>
<dd>Figure 1 Factory wired GSLC<br><br>
<dd> <br>
<dd><image008.jpg><br><br>
<dd>Figure 2 Miller Solar installed GSLC..<br><br>
<dd> <br>
<dd><image009.jpg><br>
<dd>Lic 773985<br>
<dd><a href="http://www.millersolar.com/">millersolar.com</a><br>
<dd><a href="tel:805-438-5600">805-438-5600</a><br><br>
<dd> <br>
<dd>From:</b> RE-wrenches
[<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" eudora="autourl">
mailto:re-wrenches-bounces@lists.re-wrenches.org</a>] On Behalf Of
</b>Chris Mason<br>
<dd>Sent:</b> Monday, October 10, 2016 3:40 PM<br>
<dd>To:</b> RE-wrenches
<<a href="mailto:re-wrenches@lists.re-wrenches.org">
re-wrenches@lists.re-wrenches.org</a>><br>
<dd>Subject:</b> Re: [RE-wrenches] PV Recombiner<br><br>
<dd> <br>
<dd>The GSLC gives the system a nice finished appearance that the
customer will understand. Suck it up and live with the imperfect world we
function in. <br><br>
<dd> <br>
<dd>On Mon, Oct 10, 2016 at 5:55 PM, William Miller
<<a href="mailto:william@millersolar.com">william@millersolar.com</a>
> wrote:<br>
<blockquote type=cite class=cite cite="">
<dd>Friends:<br><br>
<dd> <br>
<dd>I am looking for a PV recombiner. I need to accept the outputs
from 3 remote PV Combiners, send those outputs through GFP circuit
breakers, into charge controllers, back thorough breaker, into a bus bar,
through a main breaker and onto a large battery bank.<br><br>
<dd> <br>
<dd>I am using 2 Outback Radian inverters, but I refuse to install DC
breakers on their dead-front because wiring to studs facing away from the
front is an inferior design. Furthermore, I see no need to run PV
circuits through the GSLC cabinets.<br><br>
<dd> <br>
<dd>I looked at the Midnite MNDC15 but again, these use panel mounted
breakers with studs on the back.<br><br>
<dd> <br>
<dd>Anyone know of a more thoughtfully designed PV recombiner?<br><br>
<dd> <br>
<dd>Thanks in advance,<br><br>
<dd> <br>
<dd>William Miller<br><br>
<dd> <br><br>
<dd> <br>
<dd><image003.jpg><br>
<dd>Lic 773985<br>
<dd><a href="http://www.millersolar.com/">millersolar.com</a><br>
<dd><a href="tel:805-438-5600">805-438-5600</a><br><br>
<dd> <br><br>
<br>
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<dd>NABCEP Certified Solar PV Installer<br>
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<dd>Generac Generators Industrial technician<br><br>
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