At the risk of stirring the hornets nest, I disagree with NABCEP's stance of
this issue.
I think for their own survival and best interest they need to specialize.
Battery based and batteryless are really different critters.
And that the present and future of the industry is hugely weighted to
Just got to weigh in on this one.
It cracks me up to see the grid tie generation's attempts at off grid
design. It is such an experiential design mode. It can be conceptually
taught in a class. But it has to be lived to really be made whole. The finer
OG designers I know have almost all lived off
Jay
I also agree that the training/position on this subject matter should be two
separate certifications. Let me give some examples:
Last year in Hawaii, we have reported approximately 11mW's of PV that went in.
In speaking to the utility folks, less than 1% had any batteries associated
with
I have to agree. We have done off-grid for 30+ years, so it was a very
simple transition for us to also do on-grid because the system design and
configurations are much simpler.
Over the past few years we have seen more mistakes by those that are only
grid-tie familiar or certified when
I try to do more lurking here than participating, simply because there are
many experienced installers here with similar experience and knowledge. I
do agree with the earlier post that maintains the best experience with off
grid systems is living with off grid solar. Our office is 100% off grid as
Wrenches,
The Outback MX60 and FM-60/80 include a battery vent fan auxiliary function.
What is the simplest equivalent way to control a Power Vent with XW
equipment?
Thank you,
Allan
Allan Sindelar
mailto:al...@positiveenergysolar.com al...@positiveenergysolar.com
NABCEP Certified
Wrenches-
How are folks wiring the Soladeck boxes? It seems that the intent is to
use cord grips in the south end of the box, but I just saw another
installation where the wires just came directly in through the space at
the south end. Seems like the foam is included to keep bugs out rather
I drill where the dimples are in the sheet metal, then punch for .5 trade
size, then install one of the plastic two hole strain relief clamps as are
available from AEEsolar and others.
I feel that one must not rely on the foam lid gasket to sufficiently clamp
the power leads. That just seems like
Hi Allan
The XW Aux output (available on the inverter and the charge controller)
can drive a 12V fan for venting purposes. There are internal logic
settings you can adjust to turn this on for various conditions.
Cheers,
Mark
The 2-hole strain relief is called a cable gland. TB makes a line that
includes 2-hole, 3-hole, 4-hole etc. The part numbers all begin with
CC-NPT-*. The 2-hole gland is CC-NPT-12-G-2. You can find the complete
selection on the last page of this PDF:
Dave,
As you've seen on our installs we always use one or more strain
reliefs in the south end of the box. Including for the grounding
conductor. We use the nylon ones from Sealcon. There is no way that
the foam block and lid provide adequate strain relief.
Hello Wrenches:
I have read a few of the archives on this subject, and have a couple
questions. I have been testing arrays with an insulation tester, and have
found that some module types have more leakage than other modules. Bill
mentioned Amorphous being really bad.
I have found
How are folks wiring the Soladeck boxes?
I have been wanting to use external mounted threaded MC connectors but
cannot find them in stock anywhere. [See below] Having the MC connectors
would make attachment a piece of cake. So instead I use one 1/2 NM flex per
string which will allow module
Dear DKC:
Here is a link to one method:
http://millersolar.com/practices/Technical_Procedures/Soladeck/Soladeck.html
Do you have any photos of the installation where they laid the PV wires
right on the foam? I'd love to add that to our Rogues
Gallery:
Ok William, I'll bite: what are your exclusive PV wire Transition Boxes?
Your link showed some lovely EMT work, etc, but now I'm also curious about
these transition boxes mentioned, but not pictured.
Also, I've seen the same interpretation of accessible in Hawaii, that J boxes
couldn't be
At 11:21 PM 11/24/2009, you wrote:
Ok William, I'll bite: what are your exclusive PV wire Transition Boxes?
Ray:
http://millersolar.com/practices/Technical_Procedures/PV_wiring/PV_wiring.html
Article 100, definition of accessible says:
capable of being exposed without damaging the
Friends:
I'd like to make two brief points on the training/NABCEP debate:
1. If I thought NABCEP certification would get me one more job I'd normally
lose to a low-ball bidder, I'd be inclined to sit for the test, but it won't.
2. Most solar electric installers could not be considered
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