ur time, take
your money, and bring you nothing but grief. Please let's all avoid
these outfits, and not lend them any of our credibility.
Thanks,
R. Walters
r...@solarray.com
Solar Engineer
R. Walters
Solarray.com
NABCEP # 04170442
installing, and for lightning.
5) Get a spare rectifier, and fuses, so if you do have a lighting
incident, you don't have to make 2 trips.
6) Get a receiver mounted winch for your truck, for raising and
lowering.
My 2 pennies,
R. Walters
Solarray.com
NABCEP # 04170442
On Aug 27, 2009,
0s of thousands of
dollars in damage.
R. Walters
Solarray.com
NABCEP # 04170442
On Aug 20, 2009, at 9:35 PM, Geoff Greenfield wrote:
esteemed wrenches (or just steamed if youve been out in the hot
lately)
I'm curious why more folks don't use the same flat roof ballasted
using multiple inverters, or doing a more complex off grid system
(DC loads, wind, etc).
Midnite's E-panel and battery box make for a very clean Grid tie w/
battery backup system. We just couldn't fit systems in such small
spaces before.
R. Walters
Solarray.com
NABCEP # 04170442
and avoids total chaos.
R. Walters
Solarray.com
NABCEP # 04170442
On Aug 18, 2009, at 5:58 AM, Travis Creswell wrote:
I don’t have time to do the exact math but think a small inverter
and linear fluorescent is a clear winner of your trying to
adequately light the bulk of the class room
On Aug 15, 2009, at 6:49 PM, jay peltz wrote:
I don't have a photo, but have seen a pole mount, in the ground,
run up the side of the building, supported by the building by a
bracket, which can mount a tracking or non tracking pole mount.
jay
We've done mounts like this before, when
m mechanically
inclined and like the idea, I might do it.
But if its a little old lady, who doesn't want to mess around, I set
everything for a year round setting, and never look back.
BTW, I once tried Unirac's roof mount with tilt adjust: very flimsy,
and hard to work wit
00% sure, but I think GT inverters would help not hurt the PF
problem in most situations.
Correct me on any and all of this, Oh fellow wrenches,
R. Walters
Solarray.com
NABCEP # 04170442
On Jul 30, 2009, at 9:19 AM, boB Gudgel wrote:
Ron Young wrote:
Ok, so all seem to be in agreem
What if every 4 rows or so, you left extra space to hack into the
roof to ventilate? How big a hole do they need to cut and how often?
R. Walters
Solarray.com
NABCEP # 04170442
On Jul 29, 2009, at 7:43 PM, solar...@aol.com wrote:
And to my knowledge, there exists no certified
end anyone interested a sheet on how to calculate this, if
you're not seeing it.
R. Walters
Solarray.com
NABCEP # 04170442
On Jul 28, 2009, at 8:57 AM, Greg Egan wrote:
My solution to snow load issues is to install modules on racks so
they can tilt to 90 degrees when it's s
I also had a faulty 15 A breaker on an array with less than 11 amps
short circuit current. It tripped intermittently maybe 4 or 5 times
over a year, so we swapped it out. Perhaps they had a bad batch?
I was going to test it at the shop, but didn't have a chance yet.
R. Walters
Solarra
One of our suppliers, American Electric is excellent about ordering
weird stuff for us. Only problem is the price!!
I'm guessing that the Stainless model in 1" is over $30.
R. Walters
Solarray.com
NABCEP # 04170442
On Jul 25, 2009, at 9:18 AM, Nick Vida wrote:
here is
itive, black for negative color coding is actually NEC
compliant on an ungrounded system.....
R. Walters
Solarray.com
NABCEP # 04170442
On Jul 25, 2009, at 10:03 AM, boB Gudgel wrote:
toddc...@finestplanet.com wrote:
"If neither pole is grounded then both must be treated as
p
skets into the plastic boxes.
Seems the fix he suggested: the Myer's Hub, could be a violation of
the products UL listing, when used with other types of conduit.
R. Walters
Solarray.com
NABCEP # 04170442
On Jul 24, 2009, at 3:25 PM, Nick Vida wrote:
guys,
on myers hubs... are t
ryless, grid-tied PV system than a battery-based system
or wind or water generator, but living with your work is essential.
It makes you keenly aware of unique subtleties and helps you better
understand your customers concerns.
Joel Davidson
- Original Message -----
From: R. Walters
the head soon.
It will hurt our industry, but then maybe we can get back on the
track of true professionalism that this list and all of you represent.
R. Walters
Solarray.com
NABCEP # 04170442
On Jul 19, 2009, at 6:43 AM, Peter Parrish wrote:
Joel,
As a friend, I have enjoyed
s, and all I was able to do was
create well educated consumers.
R. Walters
Solarray.com
NABCEP # 04170442
On Jul 17, 2009, at 9:44 AM, Keith Cronin wrote:
Hi gang
I was wondering, what percentage do you believe represents the
ratio of classroom training to field training for P
I just looked at the Techno Metal Post website; looks like a great
product for the PV biz. I wonder if they could be adapted for
grounding systems?
Ray
On Jun 30, 2009, at 6:23 PM, Larry Brown wrote:
Keith,
We have had good success with TechnoMetalPosts for ground mounts
No excavation, no
ws. One problem I see, is that the SQF is only CE listed
( European Union), not UL or ETL, though.
Good Luck,
R. Walters
Solarray.com
NABCEP # 04170442
On Jun 27, 2009, at 3:54 PM, Allan Sindelar wrote:
Wrenches,
For a community water supply, I will be installing two identical SQ
n the heat there, the actual MPP for the module series is probably
down at 50 v, so the SB 50 is probably running the array at 37 v.
Pretty inefficient, but better than nothing.
R. Walters
Solarray.com
NABCEP # 04170442
On Jun 26, 2009, at 4:22 PM, Walt Ratterman wrote:
Hello,
I am
m design
puts some responsibility on the operator as well.
R. Walters
Solarray.com
NABCEP # 04170442
On Jun 23, 2009, at 10:30 PM, Troy Harvey wrote:
Load sheding is not a bad idea if the tech exists. Not particularly
complex either with networkable breakers and a smart controller in
while decoupling parts of
the system somewhat from surges (via the reduced size EGC), but still
bonded, insuring that no potential exists in different parts of the
ground system normally.
Ok I'm going home
R. Walters
Solarray.com
NABCEP # 04170442
On Jun 19, 2009, at 12:22 PM, Peter Par
nt
without fear on this list, we will be in the dark more: Not good.
R. Walters
Solarray.com
NABCEP # 04170442
On Jun 19, 2009, at 11:47 AM, Allan Sindelar wrote:
Is anyone as bothered about this as I am?
Well, I’m not.
The Wrenches list has always had space and encouragement
I just sort of hit this in a previous post:
check 690.47C(3). Your system falls under (C) AC & DC grounding
requirements.
This just shouldn't be that hard with the inspectors
R. Walters
Solarray.com
NABCEP # 04170442
On Jun 19, 2009, at 10:55 AM, Peter Parrish
I have a picture of one that burned up pretty spectacularly.
(definitely a fire starter) I wouldn't hook them up without fusing.
I think modern charge controllers with PWM and temp comp do the job
of desulfation adequately and safely.
R. Walters
Solarray.com
NABCEP # 041
Electrician
Positive Energy, Inc.
3201 Calle Marie
Santa Fe, New Mexico 87507
505 424-1112
www.positiveenergysolar.com
From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-
boun...@lists.re-wrenches.org] On Behalf Of R. Walters
Sent: Thursday, June 18, 2009 7:06 PM
To: RE
I quit selling Staber, as they changed the design substantially over
the years. The last one I had would NOT run reliably on a Xantrex SW+
Inverter. Kept smoking circuit boards. The days of a Staber running
off a Trace U612 are long gone. (I guess they went to the same
dinosaur land that th
Much of the confusion seems to be from the older versions of the
code. I actually find the 08 version to be less confusing overall (I
do have my issues though). It allows the WEEB system for instance,
which greatly speeds installations, and allows the array support
structure to be used as t
Hi Michael;
I agree the former subject was off topic for awhile,went off topic
again, but smart outlets as posted by Jim Duncan, are very "on" topic.
Electrical Fault Circuit Interrupters may well make electrical wiring
much safer, and may also cause our next generation of problems to
discu
I just wonder what we do with all our old "dumb" appliances that
don't have the computer chip. Sounds like a great idea otherwise,
although its probably not compatible with modsine inverters either.
R. Walters
Solarray.com
NABCEP # 04170442
On Jun 17, 2009, at 4:36
ve no documentation to even try to match them to new modules.
We still try and stock 12 v modules, but my store room has ended up
with a real hodgepodge of singles.
We only sell 4 or 5 a year, so nostalgia aside, I'm considering
finally dropping 12 v.
R. Walters
Solarray.com
NABCEP
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Solarray.com
NABCEP # 04
the difference
between a sign, a plaque, a directory, a label, and marking??)
Thanks in advance,
R. Walters
[EMAIL PROTECTED]
Solar Engineer
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e
corrections and expansions to 690.31(E)."
I'd be interested to know if other wrenches are being subject to
the same
interpretation (i.e. inverter AC must be in metal).
-Kelly
Kelly Keilwitz, P.E.
Whidbey Sun & Wind, LLC
Renewable Energy Systems
NABCEP Certified PV Installer
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Hi Bill;
I am always curious; what section of the code states that? That
sounds like we would have to change the way we do off grid systems
and generators also, to meet the visible break requirement.
Thanks again for all your information,
Ray Walters
removing the requirement would actua
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ently?
Thanks in advance as always,
R. Walters
Solarray.com
NABCEP # 04170442
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r
with a high mineral content.
Matt
---- "R. Walters" <[EMAIL PROTECTED]> wrote:
I never used it, but Battery Watering Systems has used them for
years. The rep I talked to thought we in the solar biz were quite
cautious on this.
I still use distilled H2O, myself BTW.
Have you actual
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).
From: [EMAIL PROTECTED] [mailto:re-wrenches-
[EMAIL PROTECTED] On Behalf Of R. Walters
Sent: Monday, August 25, 2008 2:11 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] more on roof penetrations
We used a lag stud assembly from Unirac, with the dreaded L foot at
the top of the corrugated ridge
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They must have targeted the wrenches list with that ad?
I tried something similar( I think) on a refrigerator. I plugged it
into Watts Up meter, and didn't see any change in the run watts or
surge watts.
If it was that easy, wouldn't Manufacturers use it to improve their
SEER ratings?
Ray
Hi August;
For any tilt adjustable or tracking system, that solid 10(or 6) will
strain harden and break. (We do a lot of pole mounts.)
We tried stranded 6, but found the tinned braid to be more corrosion
resistant at the connection point to the aluminum.
It looks very commercial/ professiona
We don't use braided for direct burial. We use it to bond to the
array, run with the PV wires, and switch to regular copper as soon as
we go into conduit at the first J box. We zip tie it together in a
bundle with all the MC cables.
[EMAIL PROTECTED]
Braid tends to "wick" water, and we
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riginal Message -
From: R. Walters
To: RE-wrenches
Sent: Thursday, August 21, 2008 10:38 AM
Subject: Re: [RE-wrenches] offgrid system question
Hi Joel;
I made a list of strategies we use a couple of emails back in this
string. I'll reiterate:
Here in Northern New Mexico we use adobes (
Hi Joel;
I made a list of strategies we use a couple of emails back in this
string. I'll reiterate:
Here in Northern New Mexico we use adobes (lots of thermal mass) and
open up to the cool night air.
When I lived through Texas summers, you either ponied up for AC, went
to your mountain home
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UL stage that I have
heard about [not seen or used] recently.
Thanks -
Dana Orzel
Great Solar Works, Inc
www.solarwork.com
E - [EMAIL PROTECTED]
V - 970.626.5253
F - 970.626.4140
C - 970.209.4076
From: [EMAIL PROTECTED] [mailto:re-wrenches-
[EMAIL PROTECTED] On Behalf Of R. Walt
Hi Dana;
In-floor heating of a super insulated building is a great idea. In-
floor cooling however, has some serious condensation problems and is
not a good idea.
In earth Air duct systems can harbor mold and Legionaries' disease.
Here in Northern New Mexico we use adobes (lots of thermal ma
We had this same issue with a single string of Rolls Series 5000s at
48 volt. A 3 Hp well pump would pull the voltage below 44 vdc and
shut off the inverters anytime the system was less than fully charged.
We see this in Electric vehicles as well. No matter the battery, AH,
state of charge, a
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Hi Phil;
THe only thing I could think, is that your battery voltage would
drop, when the EV charger came on. If its a small battery bank this
could be a large enough drop to cause the MX 60 output to go over 60
amps long enough to trip the breaker. We had a similar problem,
everything fin
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