, 2017, at 6:30 AM, Dave Palumbo <palumbo1...@gmail.com> wrote:
Wrenches,
We recently swapped in a new internal fan on a OB FX 2524T after the original
fan stopped working on the 6 yr old inverter.
Now the new internal fan is running all the time. Unrelated to temperature
(Air, Fet a
Wrenches,
We recently swapped in a new internal fan on a OB FX 2524T after the
original fan stopped working on the 6 yr old inverter.
Now the new internal fan is running all the time. Unrelated to temperature
(Air, Fet and Cap temps all good). I've tried removing all loads from the
Not familiar with LG RESU 10 battery. What are they and why do you like them
Dave?
Thanks,
David Palumbo
Independent Power LLC
462 Solar Way Drive
Hyde Park, VT 05655
802-371-8678 cell
802-888-4917 home
-Original Message-
From: RE-wrenches
Hi Matt,
Short answer is yes, 2 days of autonomy should be fine. I am presently
operating our off rid PV/hydro system at well under two days of autonomy.
I just crunched some numbers for our situation here in Vermont. Off grid system
that is now 4.3kW PV and with a Harris micro-hydro
Fellow Wrenches,
I have an OutBack FX inverter (manufactured in 2011) with a flashing Red
LED. The MATE warns "Internal Fan Failure Detected" .
Before I call OutBack support I'd like to gain a little knowledge from you
folks.
. Will I be asked to send the inverter in, or can I get
Mac,
I have had good success using Full River AGM's in difficult situations. One
system near the Canadian border here in Vermont had no homeowner care for two
months in the winter. PV array became covered with snow and they had left their
inverter on to run a refrigerator. Of course the
lectrician
Solar Design Engineer
303 505-8760
On 1/21/2017 8:52 AM, Dave Palumbo wrote:
Hi Chris,
I don't have any pictures myself, the Backwoods email included a photo of a
corroded bolt and a clean assembly which I've snipped and attached.
Off the Wrenches list I have had a co
f Of cwarfel
Sent: Saturday, January 21, 2017 9:54 AM
To: re-wrenches@lists.re-wrenches.org
Subject: Re: [RE-wrenches] Hidden corrosion caused catastrophic battery
system failure
Hi David, do you have any pictures of this that could be shared? Chris
On 1/20/2017 12:52 PM, Dave Palumbo wrote
Following is an entry from a Backwoods Solar email that I received today. I
would like to share this as a teachable point for RE techs not familiar
enough with proper battery bank care and as a reminder for those of us with
years of storage battery experience.
I have underlined the two issues in
I have a net metered system using six AUO Unison PM 250W modules with built
in SolarBridge microinverters. It is a 1.5kW system installed in late 2011.
. Homeowner called today saying her PV production meter (standard
analog EZ read kWh meter) has gone backwards. She read 7,006 kWh on
Wrenches,
I have a 6 kW Generac EcoGen (1,300 hrs on it) with a new problem.
. After swapping in a new battery the other day the generator now
starts and runs when its start switch is positioned to Auto.
. The OutBack inverter w Mate2 is not calling for an auto start.
.
be upgraded to 8k in the future?
I will reach out to you, off wrench list, for more info on your Radian GSLC
cabinet methods.
Dave Palumbo
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf
Of William Miller
Sent: Thursday, December 15, 2016 2:18 PM
Wrenchers,
I am involved in designing an off grid system that will need multiple
inverters (probably OutBack). My experience over the years has been limited
to no more than 8kW's of inverter on a big system (for me). The load profile
is not completed yet, but it is looking like this may
off the fuel sources and or throwing disconnect switches as required.
Dave Palumbo
Independent Power LLC
Hyde Park, VT
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf
Of d...@foxfire-energy.com
Sent: Tuesday, September 20, 2016 9:10 AM
To: RE-wrenches
Subject
Wrenches,
I will be presenting a class on "Solar Home Fire Fighter Safety" to our
local volunteer fire department this coming weekend. I will tour them around
my off grid neighborhood so that we can review various PV, micro-hydro,
different inverters and battery systems, various back-up
Wrenches,
I have a customer with one SW 230 poly V2.0 frame (top mount) module that
has shattered glass. It is on a DPW TPM10 pole mount. She noticed it the
other day and does not think that it was hit by anything. I agree that is
unlikely based on the site conditions.
Other than by a
Allan,
The Full River sealed battery line also has charging voltages similar to the
numbers for the Rhinos. We have had good results with many Full River
battery banks, no premature failures to date. Certainly these are higher
charging voltages than the early VRLA batteries we saw years ago.
William,
My first inverter in my own home in 1985 was a Heart Interface. I may have
the specs on that inverter. I will look around tomorrow for them. I'm
remembering the idle draw as about 10 Watts.
What make and model battery are these? My house is on its third set of
batteries and also
Tekris Power Electronics in NJ. Chris Hanrahan has been repairing these for
many years and is top notch. 732-938-4996
David Palumbo
Independent Power LLC
462 Solar Way Drive
Hyde Park, VT 05655
NABCEPTM Inaugural Certificant
(802) 888-7194
From:
Wrenches,
I'm looking for a battery charger to augment an OutBack FX 2012
inverter/charger for a 12V off-grid system that could use shorter charging
times during our cloudy late fall/winter periods in northern Vermont. Both
the generator and the battery bank are amply sized as is the PV array.
I purchased through Norwall PowerSystems www.Norwall.com I did not price it
at Lowes so I don't know if I paid more or less but it was the lowest price
I could find. Easy to deal with so far. Received EcoGen yesterday.
Dave Palumbo
Independent Power LLC
From: re-wrenches-boun
:
Generac Ecogen is your best choice. It was specifically designed for the long
runs associated with charing batteries for off-grid work.
On Sat, Sep 14, 2013 at 11:58 AM, Dave Palumbo d...@independentpowerllc.com
wrote:
Wrenchsters,
Looking for a good quality, long lasting, LP gas genset
up for off grid use
over the past few years.
This for northern Vermont where even with C/8 PV to battery charge rate we
need to run the generator about 250 hours per year as the cloud cover is
dense for weeks at a time.
Thanks,
Dave Palumbo
What about AUO/BenQ Solar AC Unison modules. We installed 3 systems in late
2011 and they used SolarBridge inverters then. Results have been OK so far.
The data logger was clunky then. We are getting an upgraded version now.
David Palumbo
Independent Power LLC
462 Solar Way Drive
Hyde
Hi Carl,
Yes. I ordered the WILO circ pump (and have received) from PAW last week. I
also have one coming from Schuco USA covered under warranty. Schuco is still
answering the phone in CT. See Sandor's contact below. He was very helpful,
unfortunately he had to source the pumps out of Germany
Jesse,
Check with manufacturer to be sure. I've had AGM's in 24v system's set at
29.2 Bulk/Absorb and other manufacturers (Full River for one) that say 29.6
is fine. So, with an FM80 I would recommend 4 strings of 2 modules to ensure
that you can always get that VMP up where it needs to be.
they
know what's going on. Works very well as they are inactive until the sun
comes up. I still wear gloves, longsleeves, turtle neck shirt and a
bugnetting hat just to be careful. Then what to do with the bag of wasps?
Make sure it is double bagged and secured with duct tape etc.
Dave Palumbo
Hello wrenches,
Is there a specific Solar Hot Water list? What I need help with is in
tracking down a specific circulator for a Schuco 1.3 Pump Station.
It is a WILO Typ Star S 21U-15-130 pump. Schuco has left the solar biz as of
last November. I called Schuco-USA and they have put in an
Jeremy,
What to look for?
Unfortunately, probably a different coffee maker.
I've gone through this with several different appliances over the years on
sine wave inverter output. Washing machines, refrigerators, dishwashers it
could be anything with electronics. Specific manufacturers
I'd like to revisit a thread from early February where we were discussing
Enphase microinverters going off line due to utility power quality issues
when Pinging of smart meters occur.
I have a system where I was told by Enphase that they applied their software
fix in late March, but in this
Kirk,
A few years ago Jeff Randal at DPW made us a nice cabinet for a single
Fronius inverter. It was not insulated. Maybe they could customize a unit to
your specs?
Dave
-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
A month ago I was searching for an Energy Star RF of standard kitchen appeal
for my rental house and with the Wrench groups help I found one I am very
pleased with so far.
Whirpool WRTL9SZY 19 Cubic Foot, Freezer on top no ice maker. $ 800
delivered
Energy Guide Yellow Tag states 345kWh/Yr.
Wrenchsters,
I have an Enphase 7.5kW system on a residence with utility Smart Metering,
both the PV Production Meter as well as the utility billing meter being
read every hour. This system has experienced many AC Frequency Out Of
Range events since the system was installed. Below is copied the
Thanks Daryl. Does your system also sometimes stay off for longer periods
sometimes? My clients system can stay off for up to 64 minutes.
Dave
-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of
Marco,
That's impressive!
Little ol' Vermont has done somewhat over 2,000 in the last 10 years with
2012 coming in at 500 systems installed (best yr to date).
Dave Palumbo
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf
I'm having difficulty finding a RF in the 16 to 20 cu ft range that uses
less than 350kWh/yr. All of the GE units listed by Energy Star as 300 to
311kWh/yr are no longer being manufactured according to my local appliance
dealers.
I see a Fridgidaire 18.2 cu ft that uses 335kWh/yr (reviews that
-272-0004
On Wed, January 9, 2013 2:44 pm, Dave Palumbo wrote:
I'm having difficulty finding a RF in the 16 to 20 cu ft range that
uses less than 350kWh/yr. All of the GE units listed by Energy Star as
300 to 311kWh/yr are no longer being manufactured according to my
local appliance dealers
(voicemail)
On Wed, Jan 9, 2013 at 12:44 PM, Dave Palumbo d...@independentpowerllc.com
wrote:
I'm having difficulty finding a RF in the 16 to 20 cu ft range that uses
less than 350kWh/yr. All of the GE units listed by Energy Star as 300 to
311kWh/yr are no longer being manufactured according to my
in any form. Had to install a new sine wave inverter.
--
Dan Fink,
Executive Director;
Otherpower
Buckville Energy Consulting
Buckville Publications LLC
NABCEP / IREC accredited Continuing Education Providers
970.672.4342 (voicemail)
On Wed, Jan 9, 2013 at 12:44 PM, Dave Palumbo d
] On Behalf Of Dave Palumbo
Sent: Wednesday, January 09, 2013 2:45 PM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] Fridge recommendations?
I'm having difficulty finding a RF in the 16 to 20 cu ft range that uses
less than 350kWh/yr. All of the GE units listed by Energy Star as 300 to
311kWh/yr
database in Excel format, and sort on one or more
columns to see the models with the features and energy performance you are
looking for.
http://1.usa.gov/ZIkdvW
Also has similar pages for many other appliance categories.
On Wed, Jan 9, 2013 at 12:44 PM, Dave Palumbo d...@independentpowerllc.com
] On Behalf Of Dave Palumbo
Sent: Wednesday, January 09, 2013 12:23 PM
To: ho...@catamountsolar.com; 'RE-wrenches'
Subject: Re: [RE-wrenches] Fridge recommendations?
Howie,
I usually agree to the Kenmore/Sears recommendation but the closest Sears is
coming in with is with 18 cu' units that are listed
I don't think these caps ever worked real well. And as batteries get older
they use more water, right?
Dave
-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of jay peltz
Sent: Wednesday, January 09, 2013 8:31
Rich,
We have been using SolaDeck PV roof mount enclosure. NEMA 3R with a flashed
penetration. Can use for combining, or simply as a pass through box.
Dave
David Palumbo
Independent Power LLC
462 Solar Way Drive
Hyde Park, VT 05655
www.independentpowerllc.com
NABCEP Certified PV Installer
] On Behalf Of Dave Palumbo
Sent: Sunday, November 25, 2012 8:20 AM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] Best practices for conduit penetration on roof
Rich,
We have been using SolaDeck PV roof mount enclosure. NEMA 3R with a flashed
penetration. Can use for combining, or simply as a pass
Howie,
We have a couple of these out there now. They are good for techno geek
types. But for regular people they are no easier than the Mate 2.
David Palumbo
Independent Power LLC
462 Solar Way Drive
Hyde Park, VT 05655
www.independentpowerllc.com
NABCEP Certified PV Installer
Vermont Solar
There is a potentiometer on the board of the IOTA chargers that used to be
assessable through a hole in the cover. I adjusted a new one two weeks ago
and had to open it up to get at the pot. Adjusts up 15.6VDC with plug in and
14.8 with the jumper plug out. Some of the older models would adjust
Dave,
Sounds like a great solution. We have an OB Radian net-metered PV with
battery back-up coming up this fall. Where do we source an Elkor meter?
Thanks,
Dave
David Palumbo
Independent Power LLC
462 Solar Way Drive
Hyde Park, VT 05655
www.independentpowerllc.com
NABCEP
I am looking for a recommendation for Max Voltage, and how often to attain
this bulk voltage? For the following system:
. Trojan 8D AGM battery bank (4 bats for 11kWh rated storage with
900 Watts of PV)
. Home was previously off gird. We upgraded it to a grid tied net
metered
We have had less than stellar performance out of the Crown L-16's that we
installed 4 to 5 years ago. Premature failure is my experience. About 60% of
the cycle life compared to Trojan L-16's and also Surrette/Rolls. I've been
using those since 1985.
Back to using Trojan. Specifically RE-B's
All,
We are considering using Solar World 2.0 framed modules. Not having put
hands on these yet, we are looking for testimonials and opinions on these
top mount only modules.
And while we're at, it what about Solar World's 2.5's with the bottom mount
flange?
David Palumbo
Independent
Wrenches,
We have an installation in place since 2008 working well with a Solectria
PVI 2500 feeding a supply side grid connection.
Homeowner wants us to double the system size now. I can buy a SB3000
inverter for $ 300 less than the Solectria PVI 2500 (with upcharge for 10 yr
warranty) and
Dave,
Very good. Thanks for the pick up on the 650A Service Disconnect issue.
Dave Palumbo
-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dave Click
Sent: Thursday, April 19, 2012 1:39 PM
To: re-wrenches
Wrenches,
I am trying to chase down NABCEP credit hours from the Feb 28/29th ALT E
Dealer Conference in Waterville Valley, NH.
The trainers said they would send the certificates out to folks when they
got back to their offices. 4 weeks later and no certificates (needed for
recertification
Regarding NEC Article 250.30 does Informational Note #1 mean that a standard
(no battery) grid-tied PV system is not a Separately Derived System?
I'm primarily interested on the consensus view of Bonding the Neutral
(grounded conductor) to Equipment Ground in a 60 Amp Fused Disconnect
located
Installation Manual/User's
Guide.
Dan
--- On Sun, 1/15/12, Dave Palumbo d...@independentpowerllc.com wrote:
From: Dave Palumbo d...@independentpowerllc.com
Subject: Re: [RE-wrenches] Electrolytic Caps vs. Thin Film Caps
To: 'RE-wrenches' re-wrenches@lists.re-wrenches.org
Date: Sunday, January 15
Chris,
It would be very helpful if you quote run hours rather than years.
For example we have seen:
. Inexpensive small generators (generally not worth rebuilding) 300
to 500 hours. These are gasoline models of various brands and Generac LP gas
models. 3kW to 10kW in size
Dan,
Any worries with inverters located out in 30 below zero temps with either
Electrolytic Caps or Film Capacitors? It's very cold here this AM (minus
twenty something F) and it makes me wonder about all the inverters, both
micro's and string, outside in cold weather areas. We've been told in
Zephyr vent fans have a small vent hole located on the pvc housing below the
damper flap so if/when the fan fails the gasses are still able to escape
from the battery box and dissipate into a larger space.
David Palumbo
Independent Power LLC
462 Solar Way Drive
Hyde Park, VT 05655
We are installing a grid interactive, with battery back-up, OutBack Radian
GS8048 with 5kW of PV. Vermont has a Solar Adder premium that varies from
utility to utility but in this case adds 6 cents per kWh over and above
net-metering (basically to come up to a par value of 20 cents/kWh for PV
We were recently told by OutBack that they would not be making anymore
Radian GS8048's until December. We've had one on order thru SunWize since
Sept 16th. I'm concerned that I may not receive it until too late to get
the installation completed by December 31st as contracted.
Does anyone know
things about it.
Dave
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dave Palumbo
Sent: Thursday, November 03, 2011 7:44 AM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] OB Radian Inverter avilability
We were recently told
Wrenches,
This is a new one on me. Any ideas of what may be happening?
In a follow up she said it happens every day. System was installed two
months ago. SB8000US inverter 8.28kW array.
Dave
We are experiencing electrical noise at dawn and dusk. The power back ups
for our computers
...@lists.re-wrenches.org] On Behalf Of Christopher
Warfel
Sent: Friday, October 28, 2011 9:32 AM
To: RE-wrenches
Subject: [!! SPAM] Re: [RE-wrenches] SMA electrical noise?
Check array open circuit voltage calculation?
On 10/28/2011 8:46 AM, Dave Palumbo wrote:
Wrenches,
This is a new one on me. Any
I have been following this topic over the past couple of weeks. What Dave
Katz said matches up with what I have seen over the years. Although it can
be difficult to diagnose battery issues from long distance there has been a
fair amount of information that points to sulfation. I think Mr. Katz is
I'm looking for 18 enphase M-190's for an installation here in Vermont. 72
cell modules 185 Watts. Anybody know of a source?
David Palumbo
Independent Power LLC
462 Solar Way Drive
Hyde Park, VT 05655
www.independentpowerllc.com
NABCEP Certified PV Installer
Vermont Solar Partner
23
Hi Jeff,
Do you see the increased pressure on the pump submerged an extra 180' deep
as a non issue? I know with cheaper pumps it is an issue to consider. Here
in the soggy northeast static water levels hardly fluctuate at all.
Dave
From: re-wrenches-boun...@lists.re-wrenches.org
Do the 215's output more than 215 Watts?
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Keith Cronin
Sent: Wednesday, August 24, 2011 12:21 AM
To: RE-Wrenches
Subject: [RE-wrenches] Enphase 215
Hey gang
With the 215's on
Has anyone gotten their hands on the AUO modules with the built in micro
inverter? Cut sheets on mono and poly modules.
AC Unison PM240PA0 http://www.sunwize.rsvp1.com/s152b75lGhaB
AC Unison PM250MA0 http://www.sunwize.rsvp1.com/s192765lGhaC
David Palumbo
Independent Power LLC
462 Solar
We have a potential client for a net metered PV with battery backup system
with a serious interest in using lithium ion storage batteries. I do not
know of any systems that have used these batteries yet. From some quick
calcs I come up with 105 LiFEYPo4 3.2 volt cells. 7 strings of 15 cells for
Do you know of a source for (18) enhase M190's?
Thanks,
David Palumbo
Independent Power LLC
462 Solar Way Drive
Hyde Park, VT 05655
www.independentpowerllc.com
NABCEP Certified PV Installer
Vermont Solar Partner
23 Years Experience, (802) 888-7194
Our go to guy at Trojan, Ron Parades, is evidently gone. That's what they
said at his old phone extension at Trojan. I left a message for tech support
there and have not heard back as of yet.
Is there another Trojan Tech person to specifically ask for now? And is
there one on this list
Todd,
We add concrete inside of our steel pipe masts, up to grade level, in the
interest of having more weight below ground level. I wouldn’t say that it made
the pipe stronger (that better be strong enough as is) but more weight down low
will help keep it rooted in a big wind event.
We have a small job with (18) 72 cell modules (3.3kW), the site has some
shading issues and we will be using enphase inverters. I am weighing using
two branch circuits (one with 10, one with 8) of M190's.
Or, using one branch circuit of (9) D380's.
D380's will cost less, BUT are being
Can individuals take a Fed ITC on a SHW system installed on a second home
property?
David Palumbo
Independent Power LLC
462 Solar Way Drive
Hyde Park, VT 05655
www.independentpowerllc.com
NABCEP Certified PV Installer
Vermont Solar Partner
23 Years Experience, (802) 888-7194
We used to buy temperature compensated hydrometers from AEE to include with
the sale of a battery bank for off grid customers. My sales person says AEE
is no longer carrying that item. I believe they were made by Dekka.
Recommendations for a new source for battery hydrometers in the $8 to $
Wrenches,
Looking for someone to speak with on technical questions on Trojan L-16 RE
batteries.
David Palumbo
Independent Power LLC
462 Solar Way Drive
Hyde Park, VT 05655
www.independentpowerllc.com
NABCEP Certified PV Installer
Vermont Solar Partner
23 Years Experience, (802)
William,
It's been yrs since I dealt with this issue, and it wasn't a York
specifically.. But I had an issue with a furnace and an old black Trace mod
sine. A capacitor in the feed to the furnace did the trick.
Dave
From: re-wrenches-boun...@lists.re-wrenches.org
Allan,
5 years in a scenario like that would certainly be a reasonable life
expectancy for those cells. Deep discharges followed by inadequate
recharging would cause sulfation in a short period of time and with many
cycles due to the undersizing. 5 years sounds like fair performance given
the
Years ago on this list we had a good discussion on the subject of battery
terminal protection. The favorite at that time (by a geographically diverse
group of installers) was to use a light coating of petroleum jelly (Vaseline
or generic versions). We continue to use it after 25 years of good
Tom,
This is coming from old memory, so I give this with a grain of salt, but I
believe the noontime sun angle at my latitude (44.5) is about 78 degrees on
June 21st and about 22 degrees on December 21st. That’s a difference of 56
degrees.
David Palumbo
Independent Power LLC
462
Larry,
It's easy to become frustrated browsing, or studying, anyone's marketing
these days. It's OK to squeak once in a while on topics like this (in my
opinion). NABCEP has not been discussed too much lately and your comment
brought some good discussion to the group. Sounds like you are doing
Wrenches,
I'm looking for confirmation on the expiration dates on the Federal
Investment Tax Credit for businesses, as wells as the Individual Tax Credit
(or Personal Tax Credit) for individuals.
As I understand it the ITC Grant for businesses (money up front) expired at
the end of 2010.
Energy, Inc.
3201 Calle Marie
Santa Fe, New Mexico 87507
505 424-1112
www.positiveenergysolar.com http://www.positiveenergysolar.com/
On 12/9/2010 9:12 AM, Dave Palumbo wrote:
Wrenchsters,
Any recommendations on a generator fed Battery Charger for a large 24v
battery bank (1,800AH). It's
John,
We have done several of these corrugated steel roofs. We like using 3/8 x
8 Hanger Bolts from UniRac part #310025. These are a long custom lag screw
designed to have an L foot fastened on it. Allows you to get the L feet
above the plane of the ribs so you can place the hanger bolts where
Anybody have any experience with Allied Schools - Training 4 Green programs?
Online courses, NABCEP approved (so they claim on the web
www.training4green.com
Thanks,
Dave
___
List sponsored by Home Power magazine
List Address:
Kent,
Is this a flickering of the lights when the generator is running and
charging the battery bank? Which I have seen.
Or, something that is going on all the time? Which I have not experienced.
Dave Palumbo
Independent Power
-Original Message-
From: re-wrenches-boun...@lists.re
a Plug In Breaker. There is a GE
feeder type breaker # THQL2190 (90 A DP). Could we use this as the main
breaker for the load center above? It is listed as a 10KAIC breaker.
#3) Swap out existing 32 space load center and replace with 150AML panel
with 100A MB kit.
Thanks,
Dave Palumbo
can be an
excellent choice depending on the price/value ratio. Medium size systems
will normally call for Surrette/Rolls 6v, or Trojan L-16 batteries. All for
off grid applications. Sealed batteries for battery backup grid tied.
Dave Palumbo
Independent Power LLC
Offices in Lamoille
a 150Amp panel. A local
electrician proposed this dedicated panel to avoid the larger load center
panel. I cannot find any mention of dedicated panel in the NEC.
I think what I am proposing follows 690.64. Any opinions, or advice would be
appreciated.
Dave Palumbo
Independent Power LLC
in contact with conductors, put a
guard around it.
Bill.
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dave Palumbo
Sent: Wednesday, September 01, 2010 5:32 PM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] Delta LA's
I am
I am concerned with Delta LA 600VDC cans being mounted exterior from J-boxes
(or disconnect switches) on ground mounts.
I remember hearing from an old hand that these devices can fail in a manner
that could possibly expose the wiring to human hands. The wires would have
high voltage DC
My application for #8 and #6 is in conduit from the PV array combiner to the
DC disconnect/inverter. So, UV protection is not important. Better quality
insulation is my concern. We had a couple of spools of #8 THHN/THWN-2 test
below the norm with a Fluke insulation tester recently.
My local CED
Tom,
I have seen many Surrette battery banks of two series strings in parallel
last 10 to 12 years. Also have had a few with three string banks go that
long. All were well designed systems with homeowners providing good
maintenance.
Dave
From: re-wrenches-boun...@lists.re-wrenches.org
Bob,
Sulfation, I'd say. Try EDTA. Trailhead Supply. See Home Power marketplace
ad for contact info.
If it's not sulfation then maybe it's simply diluted electrolyte(accidental,
or intentional) which would make the batteries have lower performance AH
wise but should last a long time (plates
Andy,
Contact me off list and I'll send a photo of what we do. This is something I
came up with to comply with Article 690.31. No guarantee your AHJ will like
it. I shared this on list last year, nothing really new. We don't drill into
module frames, but use the aluminum mounting rack to
For comp shingle jobs there is now a good economical choice. Actually two
choices from one manufacturer EcoFasten www.ecofastensolar.com They make
Quickfoot and also GreenFasten. Good quality products, good price points.
They are also sold under other names by distributors such as DPW which calls
Joel,
Schuco - Good German quality, wide range of modules, good energy output
tolerance, good availability, good pricing. Company appears to be solid,
which is important to me. I'm presently designing several systems around the
Schuco MPE 180 MS05 Black Line modules, -0%/+5% tolerance, 36Vmp
Jim,
You have probably seen this already but it’s worth a mention here. Good article
in SolarPro magazine April/May “Optimal PV-to-Inverter Sizing Ratio”.
Dave
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jim
Wrenchers,
Looking for advice on the following pump. Lorentz PS600-HR04H-1-48B with
power pack option and controller.
I will be doing an off-grid system for a homeowner who already who had
purchased this pump, in fact it is down the well already, although not
working, or even wired to
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