chris,don't forget to make sure that the existing roof structure is engineered
to support the added weight of the extra layer of plywood, as well as the
racking/modules.
benn
DayStar Renewable Energy Inc. b...@daystarsolar.ca780-906-7807 HAVE A SUNNY DAY
From: ch...@oasismontana.com
Chris,
You most likely recall, there was a thread here discussing special standing seam
attachment details required with the S-5 product.
With your weather, those might be critical for the roofers to follow, should you
go that route.
I was unaware of the white spotting from hail you've seen on
I hear there are some Gas Boilers that don't use electricity at all.. So when a zone calls for heat, the circulator fires and wakes up the inverter.. and of course, I do know of folks that just can't let their system sleep in the first place.Dan BrownFoxfire Energy Corp.Renewable Energy
Kelly,
I've never seen one or heard of one that produces power or lasts. If you
install these your name is on them. If they don't work it reflects on you
and your business. I'd write the prime contractor a short note letting
them know that you cannot find a VAWT that you can recommend with a
Peter - I would not rely on the inverter coming out of
sleep if heat is critical for the dwelling. Most wall
mounted boilers' have a 5-20 watt low voltage transformer
that is an additional load too.
Add a module or two and sleep well at night.
Thanks, Dana Orzel
Great Solar Works, Inc
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Esteemed Wrenches,
We are working on preliminary pricing (not a bid) for several 100kW
ground mount commercial systems (crystalline fixed mount). This sort
of system is somewhat outside of our niche, and I'm wondering what
folks who do it all the time are seeing for typical BOS costs
Greg,
keep in mind this is the US military we're talking about. They neither think
nor function in reality a large part of the time. They are trained to follow
orders and are not allowed to think for themselves. Maybe you've never
served
Jim Duncan
**
Kelly,
I've never seen one or
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
How about hardware cloth along the back of the array beneath the rails?
I think that's been suggested on this list before.
Original Message
Subject: [RE-wrenches] Ground Mount Screening
From: Drake drake.chamber...@redwoodalliance.org
To: RE-wrenches
If you ask me this is a dream scenario. The scary thing about S-5!s is that
you rarely know how often the roofing panels are attached to the decking and
how well the decking is attached to the framing. In this case you can
direct the roofer to fasten the roof as often as you want. I had a PE do
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
Hi Kelly,
I'm jealous. This sounds like a sweet opportunity. As long as your contract
is clear on the things you are going to cover. Including being reimbursed
for servicing anything that wasn't supplied by you. I'm with Darryl T on
this Get paid for labor and common BOS stuff only. Stay out
andrew,a few comments added to your last email...
You Wrote If you ask me this is a dream scenario. The scary thing about
S-5!s is that you rarely know how often the roofing panels are attached to the
decking and how well the decking is attached to the framing. i'm not overly
familiar
Peter,
We had a client with a SW 4024 and his system was trying to power a new
Buderus boiler. The boiler controller didn't like the power quality. We
cleaned up that circuit with a capacitor and has been working great since.
We didn' have a sleeping issue, but he did have quite a few phantom
Drake,
I recommend using 4'x8' panels of lattice work that is either wood or PVC so
that you don't have worry about grounding the material. It is reasonably
attractive and can hide some of the ugly parts of the array. The panels can
be held on with battens that screw into the structural member
I still wonder about the 30VDC requirement creeping into the Code. But I
feel even more strange when, and it is hard to keep a straight face, let
alone actually think about relegating the integrity of my PV system
topanels of wood lattice. Perhaps Home Depot does have the right
idea about
Maybe they should require that extension cords be in conduit. :) where do you
draw the line? If lattice is good enough, is fiberglass screen okay? How about
bird netting or orange construction fence?
Seriously though, we have never been required to use a lattice or fenced
enclosure for a
You know, I can go down into my unfinished basement, through an unlocked
full height door. The wiring in this space is fully Code compliant. And
yet, I can walk over and put my bare hand right onto a piece NM cable that
has 200A of 240 VAC running on it.
But God forbid I should be able to walk
Mark,
The fact is you can't legally walk up and touch NM cable anymore. Whenever
your house was built, that may have been code compliant, but not since the
early 1990s has that been allowed. You may think a wooden lattice work is
insufficient protection, but the code disagrees with you as a
I agree with Bill. Am I the only one who sees this as a 240 VAC application,
not a 29.5 VDC application? The AC will be run in cable, not conduit, under the
array. Code and common sense say we don't want unqualified people walking up to
it and grabbing cables.
If it's a conventional ground
Bill,
I don't really want to call you out, but I also don't like you lording your
expertise over me, implying that I am stupid and I am going to get myself
killed someday, or worse yet kill someone else:
1 - 2008 NEC 334.15 NM Cable...Exposed Work(C) in unfinished basements.
What exactly
There is a big difference between standing seam metal roofs and surface
screwed metal roofs. With surface screwed (aka ProPanel or Ag Panel),
screws penetrate through the roof skin and rely upon a neoprene gasket under
a cupped washer to provide the weather-tight seal. It makes a pretty good
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