Re: [RE-wrenches] IRS Audit

[pieter offgridenterprises.org via RE-wrenches]

The AHJ is looking for the UL certification. The IRS agent did not. The agent 
looked at the equipment and the displays to see that the system was 
operational, paid no attention to any labels.
Pieter Huebner

From: RE-wrenches  On Behalf Of 
Christopher Warfel via RE-wrenches
Sent: Tuesday, June 4, 2024 5:30 AM
To: re-wrenches@lists.re-wrenches.org
Cc: Christopher Warfel 
Subject: Re: [RE-wrenches] IRS Audit


Qualified equipment I think would be it's UL certification.  I have never run 
into this issue though.  Chris
On 6/3/2024 4:53 PM, pieter offgridenterprises.org via RE-wrenches wrote:
Yes and no,  We had the IRS send an agent to one of our clients Ranch, and they 
asked to see the equipment but did not request any further documentation.
Pieter Huebner

From: RE-wrenches 
<mailto:re-wrenches-boun...@lists.re-wrenches.org>
 On Behalf Of rick--- via RE-wrenches
Sent: Monday, June 3, 2024 2:23 PM
To: RE-wrenches 
<mailto:re-wrenches@lists.re-wrenches.org>
Cc: r...@solshineenergy.com<mailto:r...@solshineenergy.com>
Subject: [RE-wrenches] IRS Audit

Wrenches,

Has anyone had a customer that was being audited and requesting a 
manufacturers’ certification statement for their PV equipment?  The only 
manufacturer that has been able to provide a statement has been REC. I’m 
attaching a copy for reference. Is there an assumption that most equipment 
qualifies? The IRS definition for “qualified solar electric property” is pretty 
vague -

 "Qualified solar electric property expenditure. The term "qualified solar 
electric property expenditure" means an expenditure for property which uses 
solar energy to generate electricity for use in a dwelling unit located in the 
United States and used as a residence by the taxpayer."

Thanks,

,


rick brown
SolShine Energy Alternatives, LLC
Electrical & Solar Contracting Services
www.SolShineEnergy.com<http://www.SolShineEnergy.com>
Roanoke, VA
Office: 540.235.3095
Mobile: 540.808.9502

VA Class A Contractor Lic# 2705147660
VA Master Electrician Lic# 2710062762
VA Alternative Energy Systems Installer
NABCEP Certified PV Installation Professional 110112-21

CONFIDENTIALITY NOTICE -- This email is intended only for the person(s) named in
the message header. Unless otherwise indicated, it contains information that is
confidential, privileged and/or exempt from disclosure under applicable law. If 
you have
received this message in error, please notify the sender of the error and 
delete the
message. Thank you.”




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--
   Christopher Warfel
  ENTECH Engineering Inc.
   PO Box 871, Block Island, RI 02807
  401-477-5773
[EE Logo]<https://entech-engineering.com/Home/default.php>
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Re: [RE-wrenches] IRS Audit

[pieter offgridenterprises.org via RE-wrenches]

Yes and no,  We had the IRS send an agent to one of our clients Ranch, and they 
asked to see the equipment but did not request any further documentation.
Pieter Huebner

From: RE-wrenches  On Behalf Of 
rick--- via RE-wrenches
Sent: Monday, June 3, 2024 2:23 PM
To: RE-wrenches 
Cc: r...@solshineenergy.com
Subject: [RE-wrenches] IRS Audit

Wrenches,

Has anyone had a customer that was being audited and requesting a 
manufacturers’ certification statement for their PV equipment?  The only 
manufacturer that has been able to provide a statement has been REC. I’m 
attaching a copy for reference. Is there an assumption that most equipment 
qualifies? The IRS definition for “qualified solar electric property” is pretty 
vague -

 "Qualified solar electric property expenditure. The term "qualified solar 
electric property expenditure" means an expenditure for property which uses 
solar energy to generate electricity for use in a dwelling unit located in the 
United States and used as a residence by the taxpayer."

Thanks,

,


rick brown
SolShine Energy Alternatives, LLC
Electrical & Solar Contracting Services
www.SolShineEnergy.com
Roanoke, VA
Office: 540.235.3095
Mobile: 540.808.9502

VA Class A Contractor Lic# 2705147660
VA Master Electrician Lic# 2710062762
VA Alternative Energy Systems Installer
NABCEP Certified PV Installation Professional 110112-21

CONFIDENTIALITY NOTICE -- This email is intended only for the person(s) named in
the message header. Unless otherwise indicated, it contains information that is
confidential, privileged and/or exempt from disclosure under applicable law. If 
you have
received this message in error, please notify the sender of the error and 
delete the
message. Thank you.”

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Re: [RE-wrenches] midnite new inverter

[pieter offgridenterprises.org via RE-wrenches]

Just as a point of clarification: The Delta lightning arrestors (gray cans) are 
not surge arrestors and are not designed to protect sensitive electronics. They 
are lightning arrestors, it says so right on them. They are a spark Gap device 
and work on  Dv/DT.  The lightning arrestors do work for the designed purpose 
and are a good idea as a first line of defense. The surge arrestors like the 
MNSPD series are by definition a surge arrestor and specific break over 
voltages and should be used on all input and output connection points on a 
system. I would ever recommend removing a delta lightning arrestor, but would 
encourage installers to add a surge arrestor. The Delta lightning arrestors are 
useful to protect things like stator windings, transformers, and conductors, 
but they offer little protection for electronics like a surge arrestor is 
designed to do.
Pieter Huebner
Project Manager
Of grid Enterprises

From: RE-wrenches  On Behalf Of John 
Blittersdorf via RE-wrenches
Sent: Friday, April 12, 2024 8:09 AM
To: RE-wrenches 
Cc: John Blittersdorf 
Subject: Re: [RE-wrenches] midnite new inverter

Bill,
   Now that you mention it I did not have an SPD near the inverter,  I have one 
 on 1 of 2 TOP Racks, other rack with old Delta... My inverter lives on my 
workbench to allow swapping other inverters in for load testing using my whole 
house with everything connected to ancient wiring which did not include an SPD. 
 I put them on all my customers' systems and have had no issues on most of them 
and have never had to replace one. .  I have removed lots of those grey cans 
but have not taken care of my own system !!!  The Fortress eflex was not fully 
protected either.  That strike would have been the perfect test of the SPD's if 
I had them all installed. I  had a perfect real world test of
Outbacks ACA with surge protection  on two GVFX inverters that had annual 
lightning failure until I installed their surge protectors.  There have been no 
more failures since (at least 10 years)  The lightning was so severe at that  
location that the power company was constantly having issues on that power line.

John


On Fri, Apr 12, 2024 at 12:31 AM Bill Battagin via RE-wrenches 
mailto:re-wrenches@lists.re-wrenches.org>> 
wrote:

John,

Just curious if you had SPDs (like Midnites) in either system?  AC 
side, DC side

Bill

Feather River Solar Electric

Bill Battagin, owner

4291 Nelson St. (Shipping)

5575 Genesee Rd. (USPS, UPS)

Taylorsville, CA  95983

530-284-7849, 258-1641(cell)

CA. C10 Lic # 874049

Solar Powered since 1982

Home of the Sunny Side Up
On 4/10/2024 6:01 AM, John Blittersdorf via RE-wrenches wrote:
Time will tell where the failure modes are.   I still don't like all the eggs 
in one basket. Do you have to send the units back for repair?  Had enough of 
that with Trace SW series inverters..
For off grid, I'll stick to the tried and true for now.  For Grid tie it is 
just a financial hit.  For off-grid power loss it is more important to deal 
with right away..

I am going to try a Fortress Envy at my off grid home but will keep my Outback 
field repairable VFXR wired in just in case. I had a massive lightning strike 
between my house and a guest cabin 1/4 mile away and I lost power from my 
Fortress Eflex battery at the cabin and my Outback inverter at my house.  I 
replaced the control board on my inverter ( I always keep one in reserve as it 
is usually the only board failure due to lightning)  and was back on line in 
1/2 hour and Fortress rushed me a new BMS board for the E-flex and a day later 
and a half hour swap had it back in service,  Now it is a different story with 
2 Simpliphi batteries I have from a customer that failed.  I have to ship them 
to California to have them evaluated to see if we had damaged them by misuse.  
Lots of expense and time lost.



John Blittersdorf
CV Wind Service / Off Grid Vermont
802-770-8625

On Tue, Apr 9, 2024 at 11:43 PM Scot Arey via RE-wrenches 
mailto:re-wrenches@lists.re-wrenches.org>> 
wrote:
Wow, are we in the golden age of inverter/chargers? If it had 200-a.p pass thru 
it would be near perfect.

Begs the question: are stand alone charge controllers becoming a historical 
artifact?

Howard "Scot" Arey
Owner, Solar CenTex
254-300-1228
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Re: [RE-wrenches] Fronius USA available 2023 & 2024 ?

[pieter offgridenterprises.org via RE-wrenches]

Fronius is certainly having issues, many of their products are out of stock. We 
are eight weeks into trying to resolve a service issue, and cannot get parts. 
Historically this sort of problem would have been resolved in less than one 
week. I suggest that looking at an alternative would be advisable. If this 
downward trend continues with Fronius, support after the sale will be a problem 
for the installer and the customer. I am having good experiences with other 
manufacturers but have not used any of them in an AC bussed configuration, so 
for that reason I will not suggest an alternate brand.
Pieter Huebner
Project Manager
Off grid Enterprises

From: RE-wrenches  On Behalf Of Mick 
Abraham via RE-wrenches
Sent: Thursday, August 24, 2023 3:23 PM
To: RE-wrenches 
Cc: Mick Abraham 
Subject: [RE-wrenches] Fronius USA available 2023 & 2024 ?

Hi, Mechanix~ I asked a Greentech location about quantity four Fronius string 
inverter PRIMO 6.0-1. (6kW AC output, single phase 240 volt 60 hz) This p/n is 
in the Greentech portal but my particular branch hasn't done much with Fronius. 
Today the branch manager told me "Fronius no longer exists."

Can any of you confirm or correct this report? I have an off-grid opportunity 
for which I wish to AC couple some of the PV. If Fronius USA has indeed "left 
the building", are there other string inverters that can be selected for 
country code "off grid 60 hz"? I'd like for the PV inverters to only curtail 
their output wattage if there's a frequency shift from the grid forming 
inverter (frequency/watt). Schneider XW Pro units would be forming the grid. 
Schneider has a white paper # 990-6421 on AC coupling but this document is 
almost three years old & no help at all in finding compatible PV inverters. 
Rapid shutdown is not mandated for this gig & each array would be evenly 
illuminated. IIRC, the List hasn't been highly enamored with SolarEdge in 
recent years; is that still the consensus?

Thanks as always; the Wrench List is the Bomb!

Mick Abraham, Proprietor
www.abrahamsolar.com

Landline: 970-731-4675
Cell phone or for text messaging: 970-946-6584
ᐧ
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[RE-wrenches] 1-2KW windturbine

[pieter offgridenterprises.org via RE-wrenches]

For those of you looking for a viable small wind turbine the Superwind might be 
worth consideration.
I have no field experience with the Superwind products but have seen them in 
person. The craftsmanship is outstanding, and the system certainly appears to 
be designed and built to survive the elements.
https://www.superwind.com/superwind-1250/


Sent from Mail for Windows

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Re: [RE-wrenches] sol ark reliability question

[pieter offgridenterprises.org via RE-wrenches]

We have dozens of Solark based installs and have had excellent results. All of 
our system have multiple parallel Solark inverters and have operated with out 
issues. On the rare occasion that we had commissioning questions our experience 
with Solark technical support has been outstanding, they have by far the best 
technical support in the industry. Although Solark helped design the system in 
question I suspect that there must be some finer points that were not shared 
with Solark, a load side wiring problem or perhaps an installation error that 
is causing the repeated failures. I suggest that your friend gets a fresh set 
of eyes on the system and look for that oversite we have all made and just 
can’t seem to see it on our own.
Pieter Huebner
Off Grid Enterprises

From: RE-wrenches  On Behalf Of 
Jerry Shafer via RE-wrenches
Sent: Thursday, September 29, 2022 10:25 AM
To: RE-wrenches 
Cc: Jerry Shafer 
Subject: Re: [RE-wrenches] sol ark reliability question

Wrenches
Solark issues, I have them living off grid, 3 phase and grid tied back up, both 
AC and DC coupled with only one intermittent comms issue, does not seem to have 
any more issues than OB and less than Schnieder, all are connected to Fortress 
18.5's or Blue Planet BMS interface seems hardy,
Would be good to know what issues he is having to accurately help
Jerry

On Thu, Sep 29, 2022 at 7:01 AM jay via RE-wrenches 
mailto:re-wrenches@lists.re-wrenches.org>> 
wrote:
Hi All,

I’ve got a question about how many folks are having issues with sol-ark 
products?

the reason i ask is that i’ve got a friend, a good competent installer ( well 
versed in OB, Schneider, magnum)  who’s had continuing nightmares with them.

he’s got 2 systems each on is a stacked pair of 12kw units, both offgrid.

each system was designed by sol-ark, meaning the design was approved by them 
for the loads/solar etc.

He’s been through 7 MCU swaps.
He’s been through a field call required because the over the air firmware 
update caused the inverters to go into 50hz and for some reason that isn’t 
fixable via the web.
He had an inverter that didn’t work correctly out of the box.  They charged him 
$2500 deposit for a replacement.

Then they charged him $1500 to fix the inverter he sent back under warranty.  
Thats right $1500 to fix a warranty which they agreed was a warranty issue.
Hes not going to pay but this $1500 has been going on a while.

The inverter they sent to replace the broken one had a older MCU firmware so 
wouldn’t stack and it took tech support way to long to figure that out then 
they had to send him a new MCU…...

And the list goes on.

But Im asking, is this poor guy just an anomaly or will anyone else chime in 
about issues?,

Because at this point I have no desire to install one given his experiences

Jay
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Re: [RE-wrenches] WATER COOLED - 1800 RPM - 13KW GENERATORS INQUIRY

[pieter offgridenterprises.org via RE-wrenches]

Over the past year we have installed a handful of wildcat 15 kw generators. 
Lead times remain a challenge but so far no operational issues.
https://www.wildcatpowergen.com/
PRH

From: RE-wrenches  On Behalf Of Dana 
Orzel via RE-wrenches
Sent: Friday, September 9, 2022 7:03 AM
To: Kevin Pegg ; re-wrenches-bounces 

Cc: Dana Orzel 
Subject: Re: [RE-wrenches] WATER COOLED - 1800 RPM - 13KW GENERATORS INQUIRY

Good morning all if you did not catch the last email on this project the 
manufacturer is Wildcat Generators and should be in the history
I’m on vacation at the moment and operating from the phone with no Internet 
where we’re staying
Wildcat was hoping by early November to EOY to have a 15 KW and possibly a 10 
KW though not UL listed.
The 15KW is slated to get UL listing down the road Time still to be determined

Dana Orzel
C: 208.721.7003
E- d...@solarwork.com


On Sep 9, 2022, at 12:52 AM, Kevin Pegg 
mailto:kp...@energyalternatives.ca>> wrote:

Hi Dana,

Touching base to see how this project is going? I could definitely sell several 
units a year of this config. Very needed.

Thanks,

Kevin Pegg
EA Energy Alternatives Ltd.
37471 Hwy 16 E
Telkwa, BC  V0J 2X2
250-846-9888
Http://www.EnergyAlternatives.ca


From: RE-wrenches 
mailto:re-wrenches-boun...@lists.re-wrenches.org>>
 On Behalf Of Dana Orzel via RE-wrenches
Sent: July-02-22 9:11 AM
To: 'RE-wrenches' 
mailto:re-wrenches@lists.re-wrenches.org>>
Cc: Dana Orzel mailto:d...@solarwork.com>>
Subject: [RE-wrenches] WATER COOLED - 1800 RPM - 13KW GENERATORS INQUIRY

I heard back Friday from the generator manufacturers executive board meeting 
Friday morning there is their response:

Hi Dana,

I spoke with the executives this morning and we’re very excited to hear what 
the demand is for this genset is. If it makes sense, we’re all in.

Please let me know if your interest in a 13KW – 1800 RPM genset – water cooled 
is of interest for you & your off grid clients. I see this as a big opportunity 
for replacing the oversized gensets that we have been forced to use  for a long 
time now.



Dana Orzel -  E - d...@solarwork.com -  C - 
208.721.7003

From: RE-wrenches 
mailto:re-wrenches-boun...@lists.re-wrenches.org>>
 On Behalf Of Dana Orzel via RE-wrenches
Sent: Thursday, June 30, 2022 12:02 PM
To: 'RE-wrenches' 
mailto:re-wrenches@lists.re-wrenches.org>>
Cc: Dana Orzel mailto:d...@solarwork.com>>
Subject: [RE-wrenches] WATER COOLED - 1800 RPM - 13KW GENERATORS INQUIRY

Hey now all you off grid designer/installers,

I just had a conversation with generator manufacturer (name withheld for the 
moment), about 8-13KW water cooled gensets with UL & LP gas powered. I 
explained that there is a long time hole in the market since Onan & Kohler 
dropped their gensets for prime power in this size range.

If they made the investment to produce & UL certify a 13KW - 1800 RPM - water 
cooled – 2 wire start, prime power rated - 120/240vac genset, how many off grid 
systems are being installed with oversized gensets?

If this was available how many units would each of you be interested in per 
year? I am not asking for a commitment just a market survey for this sized unit.

If there was 20-30 companies selling 4-5+ each per year this might be a 
possibility.

Let me know either off list or on list (if this is OK ? Michael let us know) & 
I hope there is a possibility here for more appropriately sized & available 
gensets for our off grid client systems.
I will be passing along this research to the OE manufacturer. If you do not 
want your name passed along let me know for now.



Dana Orzel  Great Solar Works, Inc.
C - 208.721.7003   
d...@solarwork.com
Idaho Contractor - # 028765 Idaho PV # 028374
NABCEP # 051112-136   
www.greatsolarworks.com
"Responsible Technologies for Responsible People since 1988"

P Please consider the environment before printing this email.


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Re: [RE-wrenches] Discover AES Wall Mount Considerations

[pieter offgridenterprises.org via RE-wrenches]

Having witnessed the aftermath of others who have installed batteries by 
bolting brackets to wood stud walls, my advice is do not do it! You reinforce 
the structure prior to mounting the batteries but failing to do could result in 
a catastrophic failure. When in doubt consult with your friendly local engineer 
who can properly evaluate your plans.

From: RE-wrenches  On Behalf Of 
James Jarvis via RE-wrenches
Sent: Tuesday, September 6, 2022 9:38 AM
To: RE-wrenches 
Cc: James Jarvis 
Subject: Re: [RE-wrenches] Discover AES Wall Mount Considerations

Buckling of the wall studs is most likely going to be the failure mode. You can 
use WebStructural to look at different designs. You'll find that accurately 
defining the constraints on the structural members is the most troublesome.
https://webstructural.com/

Personally, I don't think that supporting a couple of thousand pounds of dead 
load hanging off the sides of $2 studs fastened with unknown fasteners into 
unknown top and bottom plates is a super great idea. I would do it on a poured 
concrete wall, but this sounds like it is asking for trouble.


-James Jefferson Jarvis
APRS World, LLC
+1-507-454-2727
http://www.aprsworld.com/


On Tue, Sep 6, 2022 at 9:30 AM Jason Szumlanski via RE-wrenches 
mailto:re-wrenches@lists.re-wrenches.org>> 
wrote:
2x4 studs have compressive force to hold up over 1,000 pounds each when 
constructing a load bearing wall, so I don't think that is a limiting factor. 
But I am not a structural engineer, so consulting one would not be a bad idea.


Jason


On Tue, Sep 6, 2022, 10:21 AM Chris Sparadeo 
mailto:sparadeo.ch...@gmail.com>> wrote:
Thanks Jason,

I’m still wondering if there is an IBC reference for weight. The Discover 
manual only states:

“ For structural and seismic stability, the AES Battery must be mounted onto a 
vertical supporting surface strong enough to support a minimum of 227 kg (500 
lbs) per battery. Failure to follow these instructions can result in death or 
serious injury.”

Other than asking a structural engineer, how can I be sure that the wall is 
rated to 4,500 lbs?

On Tue, Sep 6, 2022 at 9:20 AM Jason Szumlanski via RE-wrenches 
mailto:re-wrenches@lists.re-wrenches.org>> 
wrote:
That won't be a problem as long as they are spread across several studs. Even 
2x4 studs would be fine. Check the installation manual for details. The shear 
and pull out strength of the fasteners will be the limiting factor, not the 
wall itself unless very poorly constructed.

https://assets.discoverbattery.com/documents/03_aes/805_product_manual/gui-aes-wall-mount-bracket-installation-guide.pdf

Jason Szumlanski
Florida Solar Design Group



On Tue, Sep 6, 2022, 8:59 AM Chris Sparadeo via RE-wrenches 
mailto:re-wrenches@lists.re-wrenches.org>> 
wrote:
Hi all,

I have a project where I am contemplating hanging 9 Discover AES batteries on a 
wall. Each battery is around 200 lbs, and although the stud wall is a bulky 
2”x6” with 16” OC…I have apprehensions that hanging almost a ton of battery on 
the wall is a good idea. I’ve seen it done in other install photos, however I 
can’t seem to find and good building code that would inform my decision.

Does anyone out there have a building code reference or experience that might 
help?

Thanks!

-Chris
--
Chris Sparadeo


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