Re: [RE-wrenches] Looking for software platforms

[James Rudolph via RE-wrenches]

Aloha Lou,
Companycam has really helped us grow and become more organized with photos,
checklists, and job-related documents.
Give me a call if you would like to chat. I work mostly in Oahu and would
love to hear from you.

https://companycam.com/features

Mahalo Nui,


James B. Rudolph


Independent Energy

C-39784 ES #10816

NABCEP Certified PV Installer since 2009  #091209-155

C. 808.313.9701













On Sun, Nov 19, 2023 at 10:30 AM Lou Russo via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Aloha All,
>
> We are exploring software platforms to manage service calls (HouseCall
> Pro, Service Titan, etc...) The feature set on these service call related
> platforms seem to be great for that component of our business but we also
> need to manage the full installation side of the business and every growing
> paperwork flow to make sure things don't slip through the cracks. Ideally
> these 2 needs would be met by one platform and allow us to move on from the
> Google Workspace kludge, which has been great up until now. I don't know if
> it is even possible!
>
> I am wondering if you all are currently using any software platforms to
> meet these needs (separately or together)  and what your experience has
> been.
>
> Thanks!
>
> Aloha,
>
> Lou Russo
> Owner
> l...@spreesolarsystems.com
> 808 345 6762
> Spree Solar Systems LLC
> CT-34322
>
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Re: [RE-wrenches] Hawaii projects

[James Rudolph via RE-wrenches]

Aloha Max,
I operate out of Oahu as well. I do hear good things about this company on
Kauai.

Nathan Wood General Contractor, LLC
1595 Haleukana St.
Kapaa , Hawaii 96766

808.821.9564
https://www.nathanwoodgc.com

Good luck with your projects and let us know if you happen to need any
other help.

Mahalo,

James B. Rudolph


Independent Energy

C-39784 ES #10816

NABCEP Certified PV Installer since 2009  #091209-155

C. 808.313.9701













On Fri, Nov 3, 2023 at 3:24 PM Max Balchowsky via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Hi wrenches, i spoke with someone in Hawaii awhile back and i can’t find
> my notes or the email. I have a couple of projects on kauai coming up and
> need to speak with an installer over there.
>
> Thanks,
> Max Balchowsky
> SEE Systems
> 760-403-6810
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Re: [RE-wrenches] Metal Truss Roofs

[James Rudolph via RE-wrenches]

Mahalo for your response Sam. That makes me feel a little better.


James B. Rudolph


Independent Energy

C-39784 ES #10816

NABCEP Certified PV Installer since 2009  #091209-155

C. 808.313.9701













On Thu, Oct 26, 2023 at 6:08 AM Sam Haraldson 
wrote:

> James,
>
> I can think of one install I performed in 2017 that was a metal roof over
> metal purlins and we opted to through-bolt the entire array using one
> installer on a ladder inside and another on the roof.  We employed butyl
> mastic and large fender washers to attach a strut frame to the roof, and
> then we installed traditional L-feet and rails atop the strut.  I have zero
> experience working with tile so I don't know what your best methodology is
> there but I can attest that the through-bolting has held up well at that
> site the past five years.
>
> Sincerely,
> Sam Haraldson
>
> [image: OnSite Energy]
> 
>
> SAM HARALDSON
> Field Operations Director
> (406) 551-6135
> 1515 N. Rouse Ave Bozeman, MT 59715
> Locally owned and operated since 2012
> [image: B Corporation]
> 
>
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[RE-wrenches] Metal Truss Roofs

[James Rudolph via RE-wrenches]

Aloha Wrenches,

I have a good for the group. Does anyone know a lag/fastener other than
EJOT that could be used to install PV to a home with metal trusses? To
complicate things the roof is tile and the decking is 1/2" ply.
We do have access to the attic, but in only half the house because of the
cathedral ceilings.  I am thinking of reducing the array size and doing
through bolts that would have to be fastened from inside the attic.
Please let me know if anyone has an idea or solution here.

Good times.


Mahalo in advance.


James B. Rudolph


Independent Energy

C-39784 ES #10816

NABCEP Certified PV Installer since 2009  #091209-155

C. 808.313.9701
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[RE-wrenches] Maui wildfires fundraising

[James Rudolph via RE-wrenches]

Aloha Kakou Wrenches,
Please see this link and info below.
These guys are installing microgrids to help get basic services back online
and even internet/facetime with Starlink. If you can help in any way it
would be greatly appreciated.
My apologies if this is off-topic, but if you spent any time on the islands
you know how special this place and its people are.

https://secure.givelively.org/donate/footprint-project/solar-microgrids-for-maui

Here is some info on this organization:

Footprint Project’s mission is to help build back greener after climate
disasters by mobilizing cleaner energy for communities in crisis. We are a
501(c)(3) non-profit disaster service organization that develops and
deploys solar generator networks to empower community resilience. We work
across the disaster management cycle to expand frontline access to cleaner
technologies and reduce fossil fuel use in the field. Since 2018, we’ve
mobilized solar microgrids to 20+ disaster response and recovery missions,
providing emergency power access to 25,000+ US citizens.

Photo Library

for
this response - photos will be added as we receive them from the field.
Scroll down for updates

Footprint Project's General Capabilities Statement



In response to the devastating Maui wildfires, we are fundraising to deploy
solar microgrids for community charging hubs, lighting, wifi
communications, shelters, refrigeration, lighting, and other critical
energy needs. We are working with on-the-ground relief teams, local solar
installers, and microgrid industry leaders, to power up sites across the
affected area.

All funds will be used to cover equipment procurement, installation, and
maintenance costs.

RESPONSE PARTNERS:

Regenerative Education Centers,  Direct Relief
, ITDRC , SmartAID
, Empowered By Light

INDUSTRY PARTNERS:

Hawaii Solar Energy Association , Sunrun
, Rising Sun
, Schneider
Electric , LONGi
, Greentech
Renewables , Elcco Electric
, Simpliphi Power 
, Sol-Ark , DER Task Force


To join our coalition of response or industry partners, email
logist...@footprintproject.org

---

UPDATE 8/15/2023 - #Microgrids4Maui's first deployment was installed today
at community leader Archie Kalepa's home, which was saved from the
#mauifires thanks to valiant efforts from neighbors and firefighters. The
relief hub is collecting and distributing supplies and providing medical
services for the community. Local installers Rising Sun Solar and Sunrun
set up a palletized solar microgrid to help take the relief hub off gas
generators for the long haul towards recovery. Share on Instagram


UPDATE 8/13/2023 - RisingSun has assembled five palletized solar microgrids
donated by Sunrun, and are prepping for deployment tomorrow.

UPDATE 8/12/2023 - We have committed $30,000 from our emergency fund to
cover rapid equipment procurements and logistics costs.

UPDATE 8/11/2023 - Requests for site power support have started to trickle
in. Meeting them quickly will be challenging.

UPDATE 8/10/2023 - We are mourning today. And calling every solar microgrid
supplier we know to see what's available close by.




Mahalo,





James B. Rudolph


Independent Energy

C-39784 ES #10816

NABCEP Certified PV Installer since 2009  #091209-155

C. 808.313.9701
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Re: [RE-wrenches] IQ Gateway outside straw bale house

[James Rudolph via RE-wrenches]

Drake:
Have a wifi extender on hand to help if needed.


James B. Rudolph


Independent Energy

C-39784 ES #10816

NABCEP Certified PV Installer since 2009  #091209-155

C. 808.313.9701













On Wed, Apr 26, 2023 at 5:58 AM Dan Fink via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Drake; How much chicken wire or other metal mesh is in the strawbale walls
> and stucco? Can you measure wifi signal strength ahead of time with a
> smartphone? Is it possible to hardwire Cat5 from the homeowner's
> router/extender/etc to the WAN port of the IQ Gateway? That is always
> preferable to wifi.
>
> Dan Fink
> Owner, Buckville Energy Consulting LLC
> IREC Certified Instructor for PV and Small Wind Installation
> NABCEP Certified PV System Inspector
> NABCEP PV Associate
> d anbo...@gmail.com
> 970-672-4342
>
>
>
>
> On Wed, Apr 26, 2023 at 9:40 AM Drake Chamberlin via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> We are planning to combine Enphase circuits in an IQ combiner box, with
>> enclosed Gateway, on the outside of a straw bale house.
>>
>> Will the WiFi signal penetrate a straw bale and the two layers of stucco
>> the wall is made of?
>>
>> Thank you,
>>
>> Drake
>>
>> Drake Chamberlin
>> Athens Electric LLC
>> Ohio Electrical Contractor’s License 44810
>> CO Master Electrician’s License 4526
>> NABCEP Certified PV Installation Professional
>>
>>
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Re: [RE-wrenches] Enphase ACM to rail mount plate

[James Rudolph via RE-wrenches]

Hey Mac,
If you have rails beneath the module wouldn't it be easier to mount an
inverter there with a bolt that fastens to rail?
William's solution looks great, but I thought to ask because this would be
cheaper and easier to wire.

Have a great day everyone  🌞

James B. Rudolph


Independent Energy

C-39784 ES #10816

NABCEP Certified PV Installer since 2009  #091209-155

C. 808.313.9701













On Thu, Feb 23, 2023 at 7:57 AM Mac Lewis via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Hello Wrenches,
>
> We are in the middle of planning for a full solar panel replacement at a
> house with AC modules.  It was a Solaria 355 with an Enphase IQ7+.  Solaria
> is going to replace the modules with a standard module, not an AC module
> (MC4 cabling not an Q Cable to J-box).  This seems OK but the issue is the
> that microinverters don't have an integrated plate to mount to the existing
> rail.
>
> I've talked with Enphase and it doesn't appear that they are willing to
> sell us this mounting flange plate (or it could have been too unusual for
> this particular tech support contact to deal with).  Im sure I can fab up
> something, but curious if anyone has dealt with this?  Or has a good
> contact at enphase that might be able to help with this unusual request.
>
> Thanks in advance!
>
> --
>
>
>
> Mac Lewis
>
> *"Yo solo sé que no sé nada." -Sócrates*
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Re: [RE-wrenches] Wires between arrays

[James Rudolph]

Maybe the inspector just didn't like the look of it for some reason?
Sometimes it's just easiest to ask the inspector what he would like to see.

If he didnt give the code reference it may be one of these items below:

* 2020 NEC*
Article 110.12 Workmanship ( the catch all of many issues for some
inspectors)
Article 300.2(B) Conductor & ground needs to be in the same raceway ( this
might be the one).
Article 352.12(C) Subject to physical damage (not likely?)
Article 352.28 Trimming and removing all rough edges ( maybe?)
Article 352.46 Bushings installed where conduit enters
box/enclosure-provided to protect conductors ( maybe?)


Please let us know how this one ends up.

Happy Trails & Good Luck.


James B. Rudolph


Independent Energy

C-39784 ES #10816

NABCEP Certified PV Installer since 2009  #091209-155

C. 808.313.9701













On Tue, Mar 22, 2022 at 2:25 PM Jay  wrote:

> I’m not the code expert.
> But here is a company making parts used for code installations.
>
> https://www.cabproducts.com/solar/
>
> Maybe one of theirs will work instead of the plastic chase.
>
> Jay
>
>
>
> On Mar 22, 2022, at 5:20 PM, Jerry Shafer 
> wrote:
>
> 
> Without question the wires are either supported via a rail or strut
> between the rows of modules or trenched underground if a ground mount. I
> have seen fly over and it will be a point of failure by someone that should
> be there but is and if you damage one JB/diode pack on the back of a module
> you will pay more than the trench would cost.
> Jerry
> NABCEP PV Inspector
>
> On Tue, Mar 22, 2022 at 1:43 PM Dave Tedeyan 
> wrote:
>
>> Hi All,
>>
>> I have an inspector giving me a hard time about wire management between
>> two ground mounted arrays. The racking is Unirac GFT, and the system was
>> too large to have one continuous array. So there are two arrays, side by
>> side, with only a 1' gap between the rails and modules from the two
>> separate arrays.
>>
>> We jumped the PV wire between the arrays through a short section of PVC
>> for protection, and the wires are secured to the rails about a foot past
>> the PVC on either end. The inspector is citing the following:
>> 
>> Array conductors found disconnected or improperly connected, which may be
>> causing portions of the array to be inoperable and/or pose a shock hazard.
>> 
>> They say that they are citing this because there is no strain relief as
>> the wires enter and exit the 18" piece of conduit. My question to you all
>> is, do you know of any code reference that says that this setup is or is
>> not okay? I would also be curious to hear what others do to span a 1' gap
>> on a ground mount. It almost seems as if I just left the conductors exposed
>> for that gap, there would have been no problem.
>>
>> I attached a couple of photos to help with my written description.
>> I appreciate the knowledge of this hive mind!
>> Cheers,
>> Dave
>>
>> --
>> [image: Logo] 
>> Dave Tedeyan, P.E.
>> Owner | Sungineer Solar
>> p: he | him | his
>> a: 1653 Slaterville Rd. | Ithaca, NY 14850
>> w: www.sungineersolar.com 
>> c: (607) 288-2898
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Re: [RE-wrenches] SER wire inside a house

[James Rudolph]

Hi Jay,
It looks like it is approved in Article 338.10 (B)(4) if you comply with
all the requirements 334 part II ( Romex/NM/NMC).
I have only used it when connecting a exterior meter feeding an interior
sub panel. When I was trained, I was also told that SER cable needs to
terminate immediately after entering a dwelling ( usually in a panelboard).
If it is buried in a finished wall it looks like you are ok. This is how
most sub panels are connected in residential houses as well.


[image: image.png]


I hope this helps.


James B. Rudolph

Independent Energy C-36080

ES #10816

NABCEP Certified PV Installer since 2009  #091209-155

C. 808.313.9701










On Sat, Nov 6, 2021 at 11:10 AM jay  wrote:

> HI All,
>
> I think it is OK to use SER wire inside a house but does anyone have any
> notations that prove otherwise?
>
> Its for a 3/0 3/0 3/0 between main and transfer and sub panel
>
> thanks
>
> Jay
>
> Peltz Power
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Re: [RE-wrenches] Off Grid Food Truck

[James Rudolph]

Thanks All!
Good stuff.


On Thu, Aug 19, 2021 at 9:08 AM Thomas Hall <
thomash...@solarspecialtygroup.com> wrote:

> My apologies… I meant to say I agree with ‘Lloyd’ about using SunWize.
>
> Thomas Hall
> Solar Specialty Group
> Www.solarspecialtygroup.com
> thomash...@solarspecialtygroup.com
> 808-854-9539
> NABCEP PV Installation Professional
> Sent from my iPhone
>
> On Aug 19, 2021, at 9:06 AM, Thomas Hall <
> thomash...@solarspecialtygroup.com> wrote:
>
>  Aloha James.
>
> I agree with Dana.
> Check with Sunwize. We have had quite a few small systems shipped to Oahu
> for small off grid from SunWize.
>
>
> Thomas Hall
> Solar Specialty Group
> Www.solarspecialtygroup.com
> thomash...@solarspecialtygroup.com
> 808-854-9539
> NABCEP PV Installation Professional
>
>
> On Aug 19, 2021, at 7:42 AM, Dana Orzel  wrote:
>
> 
>
> Check out the line of 12/24 vdc -120 vac NOVACOOL RV refers
>
>
>
>
>
>
>
> 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.
>
>
>
>
>
> *From:* RE-wrenches  *On
> Behalf Of *James Rudolph
> *Sent:* Thursday, August 19, 2021 11:18 AM
> *To:* RE-wrenches 
> *Subject:* [RE-wrenches] Off Grid Food Truck
>
>
>
> Aloha Wrences,
>
> I am trying to help some folks out here power up their 400w refrigerator
> that is in their stationary food truck on the North Shore of Oahu.
>
> I have a couple systems in mind ,but I am having a difficult time trying
> to find someone to ship a kit out here. The suppliers on this island have
> not been able to help with a small system that my client needs.
>
> Does anyone have any experience shipping small off grid kits outside the
> 48 states , or have a contact/supplier that I can speak to?
>
>
>
> Mahalo in advance.
>
>
>
>
>
> James B. Rudolph
>
> Independent Energy C-36080
>
> ES #10816
>
> NABCEP Certified PV Installer since 2009  #091209-155
>
> C. 808.313.9701
>
>
>
>
>
>
>
>
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> --

James B. Rudolph

Independent Energy C-36080

ES #10816

NABCEP Certified PV Installer since 2009  #091209-155

C. 808.313.9701
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[RE-wrenches] Off Grid Food Truck

[James Rudolph]

Aloha Wrences,
I am trying to help some folks out here power up their 400w refrigerator
that is in their stationary food truck on the North Shore of Oahu.
I have a couple systems in mind ,but I am having a difficult time trying to
find someone to ship a kit out here. The suppliers on this island have not
been able to help with a small system that my client needs.
Does anyone have any experience shipping small off grid kits outside the 48
states , or have a contact/supplier that I can speak to?

Mahalo in advance.


James B. Rudolph

Independent Energy C-36080

ES #10816

NABCEP Certified PV Installer since 2009  #091209-155

C. 808.313.9701
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Re: [RE-wrenches] Rapid Shutdown on Parking Garage

[James Rudolph]

Sounds like everything is a building in the 2020 code..

Here is the 2020 NEC Article 100 Definition:


   - *Building.*  A structure that stands alone or that is separated from
   adjoining structures by firewalls.


The 2020 NEC Handbook has this note after the definition:


   - A building is generally considered to be a roofed or walled structure
   that is intended for supporting or sheltering any use or occupancy.
   However, a separate structure such as a pole, or billboard sign.or water
   tower may also be considered to be a building. Definitions of the terms
   fire walls and fire doors are the responsibilities of the building codes.
   Generically, a fire wall may be defined as a wall that separates buildings
   or subdivides a building to prevent the spread of fire and that has a fire
   resistance rating and structural stability.




James B. Rudolph

Independent Energy C-36080

ES #10816

NABCEP Certified PV Installer since 2009  #091209-155

C. 808.313.9701










On Thu, Aug 27, 2020 at 5:50 PM Corey Shalanski  wrote:

> Code gurus,
>
> It seems that a parking garage is properly considered to be a "building"
> under NEC Article 100 definitions—and that 690.12 rapid shutdown
> requirements would therefore apply.
>
> I am wondering if anyone has successfully argued that 690.12 should *not*
> apply to systems installed on the top deck of a parking garage?
>
> --
> Corey Shalanski
> Jah Light Solar
> Portland, Jamaica
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Re: [RE-wrenches] Good Tablets for the Solar Installer

[James Rudolph]

We are transitioning from Dell laptops to Surface Pro's with cell service.
The flexibility of these units in the field seems to be unrivaled.



*James B. Rudolph*

*Hawai'i Unified*

*Director of  Energy*

*ES Electrician # 10816*

*NABCEP Certified PV Installer # 091209-155*

*808.594.9969*







On Tue, Sep 17, 2019 at 9:14 AM Kelly Larson  wrote:

> Esteemed wrenches,
>
> I am looking to buy a PC tablet/laptop for testing in the field.  I will
> be using a Solmetric PVA, Seaward 210 and Survey, excel spreadsheet,
> internet, and email.
>
> I also would like to be able to read and annotate pdfs.
>
> Suggestions?  What do you use?  What are the advantages and shortcomings
> of your device?
>
> Thank you for your response in advance!
>
> Kelly
>
>
> ~~~
> Kelly Larson
> Electrical Engineer
> NABCEP Certified PV Installation Professional™
> NABCEP Certified PV Installer Specialist™
> NABCEP Certified PV Commissioning & Maintenance Specialist™
> IREC Certified Master Trainer™/ PV
> CA Electrical Contractor# 868189
> SolarKelly.com
>
>
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[RE-wrenches] Buy American Act- compliant modules

[James Rudolph]

Aloha Wrenches,

Are any you able to get “Buy American Act” compliant modules, or know where
I can get them



I know there are a couple of different versions of the Buy America type
provisions.  I believe they need to be 51% American components and
assembled here to be compliant with the “Buy American Act”.



Maybe Panasonic??



I am looking for 325kW of modules.


Mahalo in advance,





*James B. Rudolph*

*Hawai'i Unified*

*Director of  Energy*

*ES Electrician # 10816*

*NABCEP Certified PV Installer # 091209-155*

*808.594.9969*
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Re: [RE-wrenches] Solar area lighting

[James Rudolph]

Aloha Ron,
Check out Sepco from Florida. They have helped me in the past with
projects. They even can render designs if that is helpful.

https://www.sepco-solarlighting.com/

My contact there is:

Kevin P. Mason II
International Sales Manager
www.sepco-solarlighting.com
ke...@sepconet.com

Happy Trails!



*James B. Rudolph*

*Hawai'i Unified*

*Director of  Energy*

*ES Electrician # 10816*

*NABCEP Certified PV Installer # 091209-155*

*808.594.9969*







On Thu, Aug 22, 2019 at 2:09 PM Ron Young  wrote:

> Hello Wrenches, I’m looking for some solar area lighting or street lights
> for a local project. I need decent wattage or lumens, nothing under 5000
> lumens. Has anyone had any experience with these? I’ve seen a few on Amazon
> etc. but a lot of conflicting and unreliable info. I contacted solar
> lighting in Fla. with no response.
>
> Ron
> earthRight - Solareagle.com
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[RE-wrenches] 2014/2017 NEC Code Adoption

[James Rudolph]

Aloha Wrenches,
I am in the process of familiarizing myself with the upcoming code
adoptions here. Big Island has just adopted 2014 and Kauai (KIUC) just went
to the 2017 NEC.
Below is what I have gathered so far on the changes that would apply moving
forward.


   - 2014
  - My understanding is that most string inverters should take care of
  ground fault/arc fault compliance.
  - Need a disconnect within 10’ of rooftop array (exterior wiring).
 - Microinverters/optimizers automatically take care of this
 - For PV systems without backup, (i.e. Mauna Loa) can also just
 install a string inverter within the boundary (no additional
cost other
 than inverters in a bad location) which acts as the disconnect if the
 inverter shuts down (i.e. turning the breaker off)
- For PV systems with backup, may need remote shutoff apart
from interconnection breaker
 - Otherwise a disconnecting combiner is needed
  - Labeling requirement changes
   - 2017
  - Changes the 10’ rule to 1’ on the disconnect
  - Also requires control of conductors in the array (optimizers or
  possibly string level disconnects)
  - Better/cheaper products are likely on the way, but I haven’t seen
  them yet



Have I missed some things?


Mahalo in advance.




*James B. Rudolph*

*HU*

*Director of  Energy*

*ES Electrician # 10816*

*NABCEP Certified PV Installer # 091209-155*

*808.594.9969*
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Re: [RE-wrenches] Mystery racking-who knows what this is?

[James Rudolph]

Hi Nick,
Here is the link that I found.

https://www.globalsources.com/si/AS/Jiangyin-Afea/6008845321812/pdtl/high-quality-aluminum-solar-mounting-rails-rackin/1121879476.htm


Happy Trails!

*James B. Rudolph*

*Hawai'i Unified*

*Director of  Energy*

*ES Electrician # 10816*

*NABCEP Certified PV Installer # 091209-155*

*808.594.9969*







On Tue, Mar 12, 2019 at 10:08 AM Nick Welch 
wrote:

> Hello,
>
> I took on a project that was partially completed by another outfit. I need
> to provide a spec sheet on the racking (rail more so than stand-off) for
> permitting. I believe it was installed roughly 5 years ago. See picture
> below.
>
>
> [image: mystery rail.JPG]
>
> Many thanks,
>
> Nick
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[RE-wrenches] PV Panel Disposal

[James Rudolph]

Aloha Wrenches,
What is the best practice when it comes to disposing of  used PV panels. To
be clear I am talking about ones that no longer produce any power.
Are they considered E-Waste, or are they getting tossed in the landfill ( I
hope this is not the case)?


Mahalo in advance,


*James B. Rudolph*

*ES Electrician # 10816*

*NABCEP Certified PV Installer # 091209-155*

*808.594.9969*
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Re: [RE-wrenches] PV Panel Disposal

[James Rudolph]

Additionally:

I am really hoping that there is an organization that is accepting and
recycling them in the US.
The European Union (PV Cycle) offers a tailor made waste management and
legal compliance service for companies and waste holders in the EU.

-James







On Mon, Sep 24, 2018 at 6:36 PM James Rudolph 
wrote:

> Aloha Wrenches,
> What is the best practice when it comes to disposing of  used PV panels.
> To be clear I am talking about ones that no longer produce any power.
> Are they considered E-Waste, or are they getting tossed in the landfill (
> I hope this is not the case)?
>
>
> Mahalo in advance,
>
>
> *James B. Rudolph*
>
> *ES Electrician # 10816*
>
> *NABCEP Certified PV Installer # 091209-155*
>
> *808.594.9969*
>
>
>
>
>
>
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[RE-wrenches] Ilsco Insulated Tap Connectors

[James Rudolph]

Aloha Wrenches,
Does anyone know if Ilsco Insulated Tap Connectors at DC rated?
I looked on their cut sheet, and even called the Cincinnati and I was not
able to confirm this?

Does anybody know this, or have a better connector to use?

Mahalo in advance,

*James B. Rudolph*

*Hawaii Unifed*

*Director of  Energy*

*ES Electrician # 10816*

*NABCEP Certified PV Installer # 091209-155*

*808.594.9969*
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Re: [RE-wrenches] Racking ID ?

[James Rudolph]

Looks like this one.

http://preformed.com/solar/residential/roof-mounts/power-rail-mounting-system-prm

*James B. Rudolph*

*Hawaii Unifed*

*Director of  Energy*

*ES Electrician # 10816*

*NABCEP Certified PV Installer # 091209-155*

*808.476.6754*






On Sat, Apr 21, 2018 at 8:12 PM, aram aramsolar.com 
wrote:

> DPW
>
> Aram
>
> On Apr 19, 2018, at 9:53 AM, Lou Russo  wrote:
>
> Aloha All,
>
> Can anyone out there identify the racking system in the attached photo?
>
> Thanks in advance.
>
> Aloha,
>
> Lou Russo
> l...@spreesolarsystems.com
> 808 345 6762
> Spree Solar Systems LLC
> CT-34322
>
> 
>
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Re: [RE-wrenches] Ibew is working to exclude C-46 contractor’s from installing Batteries.

[James Rudolph]

Aloha All,
Does anybody know the requirements for the C-46? I would assume if you
could qualify for that ( C-46) you could also qualify for a C-10 (C-13
Hawaii).
The full license gives one the ability to do anything, and this seems like
the way to go for versatility. "If you can't beat'em...join them."

*C-10 - Electrical Contractor*

An electrical contractor places, installs, erects or connects any
electrical wires, fixtures, appliances, apparatus, raceways, conduits,
solar photovoltaic cells or any part thereof, which generate, transmit,
transform or utilize electrical energy in any form or for any purpose.

What is needed to qualify:

Applicants are required to have 4 years’ experience to qualify to take the
exam. Experience must be at the journeyman, foreman or supervisor,
contractor, or as an owner-builder.

All applicants must have a working capital of at least $2,500. In addition,
all applicants must also file a bond with the Registrar in the amount of
$10,000.



*C-46 - Solar Contractor*

A solar contractor installs, modifies, maintains, and repairs thermal and
photovoltaic solar energy systems. A licensee classified in this section
shall not undertake or perform building or construction trades, crafts, or
skills, except when required to install a thermal or photovoltaic solar
energy system.



*James B. Rudolph*

*Hawaii Unifed*

*Director of  Energy*

*ES Electrician # 10816*

*NABCEP Certified PV Installer # 091209-1*






On Fri, Mar 23, 2018 at 3:02 PM, Jason Andrade <
ja...@westcoastsustainables.com> wrote:

> Hi at this point I believe this is a California only issue, but I was
> contacted by CalSeia today and was asked to be involved in a discussion
> regarding a move where only a C-10 contractor can install a battery based
> system
> This was news to me but they sent me a pdf outlining the issue and I will
> read it over this weekend has anyone else heard about this?
> My instant response is what special training does the c10 have that the
> c46 doesn’t ?
> Jason Andrade
> West Coast Sustainables
>
> Sent from my iPhone
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[RE-wrenches] AFCI Faults, SMA Inverters, Solectria RSB's, & RF Signals

[James Rudolph]

Aloha Wrenches,

I have a issue I would like to throw at the group.

We have a SMA 24000TL-US with a Solectria Rapid Shut Down Combiner.
The inverter keeps faulting the AFCI. We megged the strings,and checked all
connections on all components. So we are confident that the issue is not
related, or connected to all of that. We also swapped out the RSB.

I really can't disclose where the building is located because its military,
and most of their IT infrastructure happens to be in this building as well.

I know from research, and tech support that this happens sometimes with RF
signals,metal roofs,and communications antennas,etc.

SMA is suggesting we could re-run the stings so that we mitigate the
possibility that the strings are picking up this noise and triggering the
AFCI, or get clearance to disable that feature on the inverter.

Due to safety issues I'm sure the last option is not on the table.

We can also place any given sting on the combiner and it will work fine
with no faults up to four stings. Once we place more than four strings on
the combiner the inverter will fault.

Since we are still on the 2008 NEC in Hawaii this is our first run in with
the Rapid Shut Downs too. Maybe somehow this is tied into the issue?

Anyone have thoughts, or experience with this type of issue?


Mahalo Nui,


*James B. Rudolph*

*Hawaii Unifed*

*Director of  Energy*

*ES Electrician # 10816*

*NABCEP Certified PV Installer # 091209-155*
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[RE-wrenches] Hurricane damage to solar arrays

[James Rudolph]

Aloha Everyone,
I was just wondering how all the PV arrays did during these storms?
Does Florida have higher pull out values and wind designs for their PV/H20
systems?
Is there any thing the rest of us could learn from all this?
Photos?


Mahalo Nui Loa,


*James B. Rudolph*

*Hawaii Unified*

*Director of Energy*

*ES Electrician # 10816*

*NABCEP Certified PV Installer # 091209-155*

*80*
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[RE-wrenches] 200 & 400a 480/277v Stainless Steel NEMA 4x Panleboards

[James Rudolph]

Aloha Wrenches,
Would anyone know off hand how much one of these panels would cost?
I'm working on a quote, and I do not have time to send off an official
quotation to my suppliers.

Mahalo for you help.


*James B. Rudolph*

*Hawaii Unified*

*Waianae HI, 96792*


*c. 808.476.6754*
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Re: [RE-wrenches] concrete roof tile install

[James Rudolph]

Aloha Jay,
When the application fits the QuickMount product line is always the way to
go. We have also had success on curved tile with headless hanger bolts
flashed  with lead flashing, and sealed with Geocell 4500 when all better
options do not fit..


*James B. Rudolph*

*Hawaii Islands*

*NABCEP Certified PV Installer*








On Thu, Jun 22, 2017 at 10:57 AM, Lorenzo Ortiz 
wrote:

> We do flat tile roofs all day out here in CA. We've used these flat tile
> roof hooks by Solar Roof Hooks
>  to
> great success.
> Pull up a tile, find a rafter, pilot holes, goop, put in a hook with lags,
> more goop, and then a piece of roof-flashing tape for good measure, put the
> tile back and move on to the next one.
> No issues with leaks so far.
>
> On Thu, Jun 22, 2017 at 7:36 AM, jay  wrote:
>
>> HI All,
>>
>> I’ve never worked with flat concrete roof tiles before.  And have an
>> install that does have them.
>> Something like a Striata type.
>>
>> Wondering what recommendations folks have for how to mount with them.
>> Its not a large system currently only 6-9 x 280 60 cell modules.
>> Probably doesn’t make sense to remove/reroof in that area.  And the roof
>> can handle the weight without removing the tiles.
>>
>> thanks in advance,
>>
>> Jay
>> Peltz Power.
>>
>>
>> ___
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>>
>
>
> --
> *Lorenzo Ortiz   Commercial Design/Support*
>
> lore...@cal-solar.com*  (530) 274-3671 <(530)%20274-3671>*
>
>
>
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[RE-wrenches] Clip on array skirts

[James Rudolph]

Aloha Wrenches,
Someone please tell me there is a clip on racking skirt available that
works with most panels? To be clear I am looking for a post install clip on
skirt that would attach to the front of the array on the modules or racking.

Are there any of these products out there in the market place or is this
just still a dream?


*James B. Rudolph*

*Hawaii Islands*

*NABCEP  Certified PV Installer*
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Re: [RE-wrenches] Roof layout and proposal tools

[James Rudolph]

Aloha Carl,
Have you seen or tried Helioscope?

https://www.helioscope.com/


*James B. Rudolph*

*Independent** Energy Systems*

*ES  Electrician ES-10816*

*NABCEP Certified PV Installer # 091209-155*


*c. 808.476.6754*






On Mon, May 8, 2017 at 11:53 AM, Carl Adams  wrote:

> Hello Wrenches,
>
> I've been using ModSolar for preliminary estimated and roof layout.  While
> it works OK, it can be a bit kwirky at times and the aerial imagery is at
> times less than ideal.  I'm looking to see what else is out there?
>
> Carl Adams
> SunRock Solar
> NABCEP Certified PV Installer
>
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[RE-wrenches] Protecting Asphalt Shingled Roofs

[James Rudolph]

Aloha Team Wrenches,

How are we best protecting asphalt shingled roofs during the install?

Does anybody use "yellow spaghetti mats" up on pitched roofs with any
success?

Mahalo in advance,

*James B. Rudolph*
*Haleakala Solar*
*Director of Operations*

*NABCEP Certified PV Installer # 091209-155*
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Re: [RE-wrenches] Translucent Backed Modules

[James Rudolph]

Sanyo Bi-Facials look nice and have a standard frame.

On Thu, Jul 7, 2016 at 7:51 PM, Chris Worcester 
wrote:

> Lumos works.
>
>
>
> Chris Worcester
>
> Solar Wind Works
>
> NABCEP Certified PV Installer
>
> Office 530-582-4503
>
> Cell 530-448-9692
>
> Fax 530-582-4603
>
> www.solarwindworks.com
>
> ch...@solarwindworks.com
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
> Behalf Of *Chad Waits
> *Sent:* Thursday, July 07, 2016 7:49 PM
> *To:* RE-wrenches
> *Subject:* [RE-wrenches] Translucent Backed Modules
>
>
>
> Wrenches,
>
>
>
> I have a custom project we are putting a proposal together for that is to
> fly over the pool/outdoor patio and provide partial shade. It will require
> a translucent module to allow some light to pass through to the
> decking/pool below. The steel superstructure is existing already and can be
> modified somewhat to accommodate racking/additional tilt.  It could be
> framed or frameless glass on glass.
>
>
>
> Any recommendations out there?
>
>
>
> Thanks!
>
>
>
> Chad Waits
>
> President/Owner – Net Zero Solar
>
> 101 W. 5th St, Tucson, AZ  85705
>
> Cell: 520.270.4873
>
> NABCEP Certified PV Installation Professional
>
> NABCEP Certified Solar Thermal Installer
>
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-- 

*James B. Rudolph*
*Haleakala Solar*
*Director of Construction*

*NABCEP Certified PV Installer # 091209-155*
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Re: [RE-wrenches] Enecysys micros

[James Rudolph]

Happy Aloha Friday Marco!

How do these compare to Enphase?

On Thu, Jul 7, 2016 at 9:33 AM, Marco Mangelsdorf 
wrote:

> Aloha,
>
>
>
> I’m on the hunt for one or more working Enecsys Duo (480 watts output from
> two 60-cell mods) micro inverters.
>
>
>
> Please see the attached spec sheet.
>
>
>
> If anyone has any or knows someone who might, please contact me off-list.
>
>
>
> Mahalo,
>
> marco
>
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-- 

*James B. Rudolph*
*Haleakala Solar*
*Director of Construction*

*NABCEP Certified PV Installer # 091209-155*
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[RE-wrenches] 1000v rated MC4's

[James Rudolph]

Aloha Wrenches,
I am building my first 1000v system here in Oahu.
I have 2kv rated wire that was available on Island, what I do not have are
the 1000v rated MC4 connectors.

The jacket on this wire is huge!

Doe anybody know where I can order these connectors that are rated and have
a larger end (wire side) diameter that accepts this larger wire insulation?

Mahalo in advance everybody!



*James B. Rudolph*
*Haleakala Solar*
*Director of Operations*
*State of Hawaii ES Electrician  #10816*

*NABCEP Certified PV Installer # 091209-155*
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Re: [RE-wrenches] Does a Neutral Count as a CCC

[James Rudolph]

Straight from Mike Holt:

*Neutral Conductor*

The neutral conductor of a 3-wire single-phase 120/240V system, or 4-wire
3-phase 120/208V or 277/408V wye-connected system isn’t considered a
current-carrying conductor.

The neutral conductor of a 3-wire circuit from a 4-wire 3-phase 120/208V or
277V/480V wye-connected system is considered a current-carrying conductor.

When a 3-wire circuit is supplied from a 4-wire 3-[phase wye-connected
system, the neutral conductor carries approximately the same current as the
ungrounded conductors.

The neutral conductor of a 4-wire 3-phase circuit is considered a
current-carrying conductor where the major portion of the neutral load
consists of nonlinear loads. This is because harmonic currents will be
present in the neutral conductor, even if the loads on each of the 3 phases
are balanced.

Nonlinear loads supplied by 4-wire 3-phase 120/208V or 277/480V
wye-connected systems can produce unwanted and potentially hazardous
triplen harmonic currents (3rd, 9th, 15th, etc.) that can add on the
neutral conductor. To prevent fire or equipment damage from excessive
harmonic neutral current, the designer should consider increasing the size
of the neutral conductor or installing a separate neutral for each phase.
 see 210.4(A) FPN, 220.61 FPN 2, and 450.3 FPN 2.

Grounding (earthing) and bonding conductors aren’t considered current
carrying.

For individual dwelling units or one-family, two-family, and multifamily
dwellings, Table 310.15(B)(6) can be used to size 3-wire single-phase
120/240V service or feeder conductors (including neutral conductors) that
serve as the main power feeder. Feeder conductors are not required to have
an ampacity rating greater than the service conductors [215.2(A)(3)].

Warning: Table 310.15(B)(6) doesn’t apply to 3-wire single-phase 120/208V
systems, because the grounded neutral conductor in these systems carries
neutral current even when the load on the phases is balanced
[310.15(B)(4)(6)]. For more information on this topic, see 220.61(C)(1).

*Grounded Neutral Conductor Sizing.* Table 310.15(B)(6) can be used to size
the grounded neutral conductor of a 3-wire single-phase 120/240V service or
feeder that serves as the main power feeder, based on the feeder calculated
load in accordance with 220.61.

Because the grounded neutral service conductor is required to serve as the
effective ground-fault current path, it must be sized so that it can safely
carry the maximum fault current likely to be imposed on it [110.10 and
250.4(A)(5)]. This is accomplished by sizing the grounded neutral conductor
in accordance with Table 250.66, based on the total area of the largest
ungrounded conductor [250.24(C)(1)].

aloha and happy trails...

On Thu, Apr 21, 2016 at 10:28 AM, Peter Parrish <
peter.parr...@calsolareng.com> wrote:

> William,
>
>
>
> I agree about the subpanel in the house situation. The customer is a bit
> eccentric, and I have tried to bring him around. And I have explained to
> him that his approach will be more expensive. He doesn’t care. In the end,
> there is no safety risk. So I’ll plan for 4 branch circuits per conduit and
> take the 0.70 derating.
>
>
>
> - Peter
>
>
>
> Peter T. Parrish, Ph.D.
>
> President, SolarGnosis
>
> 1107 Fair Oaks Ave.
>
> Suite 351
>
> South Pasadena, CA 91030
>
> (323) 839-6108
>
> peter...@pobox.com
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
> Behalf Of *William Miller
> *Sent:* Thursday, April 21, 2016 10:25 AM
> *To:* RE-wrenches
> *Subject:* Re: [RE-wrenches] Does a Neutral Count as a CCC
>
>
>
> Peter:
>
>
>
> I think it is a mistake to not locate a sub-panel in the house.  Running
> branch circuits 45 feet to a separate building is not efficient or
> practical.
>
>
>
> Voltage drop:  1% VD is a choice, not a requirement.  Code requires 3% on
> feeders and 5% cumulative on AC branch circuits.   I like to use 1% for
> average voltage drop for PV because of the cost of wasted PV energy.  I am
> more lax on AC circuits.  If I calculate a PV feeder for 1%, that drop will
> occur only occasionally, when peak solar is achieved.  Analyze your load or
> charging profiles and look for a calc that provides the chosen VD for
> average use.  Analyzing PV energy curves over a given day, approximately
> 50% of the energy is under the bell curve.
>
>
>
> Neutrals are current carrying.  Try powering a 120VAC load without one and
> you will see what I mean.
>
>
>
> William Miller
>
>
>
>
>
> [image: Gradient Cap_mini]
> Lic 773985
> millersolar.com 
> 805-438-5600
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
> Behalf Of *Peter Parrish
> *Sent:* Thursday, April 21, 2016 8:57 AM
> *To:* 'RE-wrenches'
> *Subject:* [RE-wrenches] Does a Netral COunt as a CCC
>
>
>
> I am working with a customer who is doing a complete remodel and addition
> to his house: stripped to the open studs and floor joists, and rafters. Not
> a wire

Re: [RE-wrenches] Haticon Mid and Ends

[James Rudolph]

Aloha Bill,
They tend to freeze up out here in the middle of the pacific once they sit
for a few years.

Mahalo Ray!

On Mon, Oct 5, 2015 at 11:14 PM, Bill Loesch 
wrote:

>
> James,
> Glad you received at least one potential source for product, so far.
> With all due respect, why do you need to replace the clips?
> Any take away for others so as to not have this same issue?
> Thanks,
>
> --
> Bill Loesch
> Solar 1 - Saint Louis Solar314 631 1094
>
>
>
> On 10/5/2015 10:13 PM, Ray Walters wrote:
>
> Contact S Flex in Denver
> http://www.sflex.com/htdocs/index.php/us/contact-information
>
> R.Ray Walters
> CTO, Solarray, Inc
> Nabcep Certified PV Installer,
> Licensed Master Electrician
> Solar Design Engineer303 505-8760
>
> On 10/5/2015 7:37 PM, James Rudolph wrote:
>
> Aloha Wrenches,
> Does anybody know where I can get Haticon mid and end clips? The lead time
> with my distributors here is not feasible with my schedule.
>
> I believe we need 40mm and 31 mm ends.
>
> These are for old installs where the customer is re-roofing and we need to
> remove and re-install the arrays. (Canadian Solar and SolarWorld modules)
>
> Mahalo,
>
>
> * James B. Rudolph*
> *Haleakala Solar*
> *Director of Operations Oahu*
>
> *NABCEP Certified PV Installer # 091209-155 *
>
>
>
>
>
>
>
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> Bill Loesch
> Solar 1 - Saint Louis Solar314 631 1094
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*Haleakala Solar*
*Director of Construction*

*NABCEP Certified PV Installer # 091209-155*
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[RE-wrenches] Haticon Mid and Ends

[James Rudolph]

Aloha Wrenches,
Does anybody know where I can get Haticon mid and end clips? The lead time
with my distributors here is not feasible with my schedule.

I believe we need 40mm and 31 mm ends.

These are for old installs where the customer is re-roofing and we need to
remove and re-install the arrays. (Canadian Solar and SolarWorld modules)

Mahalo,


*James B. Rudolph*
*Haleakala Solar*
*Director of Operations Oahu*

*NABCEP Certified PV Installer # 091209-155*
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Re: [RE-wrenches] clear sealant recommendations

[James Rudolph]

Aloha William,
So far 8+ years under the module in the shade, and about 4-5 if there in
direct sunlight.


On Thu, Aug 20, 2015 at 6:30 PM, William Miller 
wrote:

>
> James:
>
> How long do your black "zips" hold up?
>
> William
>
>
> On Aug 20, 2015, at 5:18 PM, James Rudolph 
> wrote:
>
> Aloha,
>
> We  use GeoCell 4500 (Black) daily for years with no problems here in
> Hawaii ($4.99 a tube). I have also heard that black zips or sealant holds
> up better in the UV light, and my field experience seems to validate this.
>
>
> On Tue, Aug 11, 2015 at 5:09 PM, Ray Walters  wrote:
>
>> I've used Lexel before, it's the best clear caulk I've used.  I used it
>> even to repair cracks on plastic lens on concentrating modules.  It holds
>> its clarity for a long time, however I don't know if its approved for
>> asphalt shingles.
>>
>> R.Ray Walters
>> CTO, Solarray, Inc
>> Nabcep Certified PV Installer,
>> Licensed Master Electrician
>> Solar Design Engineer303 505-8760
>>
>> On 8/11/2015 12:01 PM, Kevin Pegg wrote:
>>
>> At recommendation from a roofer couple years ago, we have been using this
>> product:
>> http://www.sashco.com/products/lexel/
>>
>> Not used long enough to know if it stands the test of time.
>>
>> Kevin
>>
>> -Original Message-
>> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org
>> ]*On Behalf Of *August Goers
>> *Sent:* August 10, 2015 2:53 PM
>> *To:* RE-wrenches
>> *Subject:* [RE-wrenches] clear sealant recommendations
>>
>> Hi Wrenches,
>>
>>
>>
>> For the most part we are using Chemlink M1 sealant for to seal our
>> rooftop penetrations. It hasn’t let us down yet.
>>
>>
>>
>> M1 is a available in several opaque colors and grey is the most common.
>> Sometimes we want a good quality clear sealant to put around conduit
>> fittings, where our conduit enters buildings, etc. We used Geocell 2300 in
>> the past and I don’t have anything bad to say to it but our current
>> supplier doesn’t carry Geocell products. More recently we’ve tried Chemlink
>> Clear sealant but I’ve already seen signs that it doesn’t hold up well in
>> the elements – it seems to peel off the surface it was installed on and
>> turn brown relatively fast.
>>
>>
>>
>> Does anyone have a good multipurpose clear sealant that they like?
>>
>>
>>
>> Best,
>>
>>
>>
>> August
>>
>>
>>
>>
>>
>>
>>
>> ___
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>
>
> --
>
> *James B. Rudolph*
> *Haleakala Solar*
> *Director of Construction*
>
> *NABCEP Certified PV Installer # 091209-155*
>
>
>
>
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Re: [RE-wrenches] clear sealant recommendations

[James Rudolph]

Aloha,

We  use GeoCell 4500 (Black) daily for years with no problems here in
Hawaii ($4.99 a tube). I have also heard that black zips or sealant holds
up better in the UV light, and my field experience seems to validate this.


On Tue, Aug 11, 2015 at 5:09 PM, Ray Walters  wrote:

> I've used Lexel before, it's the best clear caulk I've used.  I used it
> even to repair cracks on plastic lens on concentrating modules.  It holds
> its clarity for a long time, however I don't know if its approved for
> asphalt shingles.
>
> R.Ray Walters
> CTO, Solarray, Inc
> Nabcep Certified PV Installer,
> Licensed Master Electrician
> Solar Design Engineer303 505-8760
>
> On 8/11/2015 12:01 PM, Kevin Pegg wrote:
>
> At recommendation from a roofer couple years ago, we have been using this
> product:
> http://www.sashco.com/products/lexel/
>
> Not used long enough to know if it stands the test of time.
>
> Kevin
>
> -Original Message-
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org
> ]*On Behalf Of *August Goers
> *Sent:* August 10, 2015 2:53 PM
> *To:* RE-wrenches
> *Subject:* [RE-wrenches] clear sealant recommendations
>
> Hi Wrenches,
>
>
>
> For the most part we are using Chemlink M1 sealant for to seal our rooftop
> penetrations. It hasn’t let us down yet.
>
>
>
> M1 is a available in several opaque colors and grey is the most common.
> Sometimes we want a good quality clear sealant to put around conduit
> fittings, where our conduit enters buildings, etc. We used Geocell 2300 in
> the past and I don’t have anything bad to say to it but our current
> supplier doesn’t carry Geocell products. More recently we’ve tried Chemlink
> Clear sealant but I’ve already seen signs that it doesn’t hold up well in
> the elements – it seems to peel off the surface it was installed on and
> turn brown relatively fast.
>
>
>
> Does anyone have a good multipurpose clear sealant that they like?
>
>
>
> Best,
>
>
>
> August
>
>
>
>
>
>
>
> ___
> List sponsored by Redwood Alliance
>
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>
> Change listserver email address & 
> settings:http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
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-- 

*James B. Rudolph*
*Haleakala Solar*
*Director of Construction*

*NABCEP Certified PV Installer # 091209-155*
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Re: [RE-wrenches] Name that rail...

[James Rudolph]

Aloha Wrenches,

While we are on the topic of railsdoes anybody have experience with
Mage Rack/Rail products?
Just wondering about the quality and all since they are made in China.

http://www.magerack.com/

On Mon, Aug 17, 2015 at 9:03 AM, Chris Worcester 
wrote:

> Any time we have the opportunity to head to the warehouse and pick up
> rails directly, along with the modules, we make every effort to do so. This
> has saved many frustrations in shipping returns and turn arounds.
>
>
>
> Chris Worcester
>
> Solar Wind Works
>
> NABCEP Certified PV Installer
>
> Office 530-582-4503
>
> Cell 530-448-9692
>
> Fax 530-582-4603
>
> www.solarwindworks.com
>
> ch...@solarwindworks.com
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
> Behalf Of *Benn Kilburn
> *Sent:* Monday, August 17, 2015 8:33 AM
>
> *To:* RE-wrenches
> *Subject:* Re: [RE-wrenches] Name that rail...
>
>
>
> I can't say William. It was only rails, no hardware and besides, we are
> not using it.  It was delivered to our (out of town) site in error along
> with our project's racking which came directly from the manufacturer.
>
> Funny thing is, these mystery rails are from a different mfgr than the
> direct shipped rails we are using.
>
>
>
> Side note... 24 of 37 of the mystery rails are badly damaged, while only 5
> of the 33 rails we ordered were damaged.
>
> Feel free to starts new topic on receiving damaged rails or other
> materials. (Our replacement rails are on their way)
>
> Benn Kilburn
>
> SkyFire Energy Inc.
>
> 780-906-7807
>
>
>
>
> On Aug 16, 2015, at 2:13 PM, William Miller 
> wrote:
>
> Is it a quality product?  Solid?  Easy to install?
>
>
>
> Thanks!
>
>
> On Aug 16, 2015, at 12:40 PM, Glenn Burt  wrote:
>
> Jeeze, I meant Polar racking…
>
> Their PRR line.
>
> http://www.polarracking.com/products/prr-2/
>
>
>
> -Glenn
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org
> ] *On Behalf Of *Glenn Burt
> *Sent:* Saturday, August 15, 2015 5:59 PM
> *To:* RE-wrenches
> *Subject:* Re: [RE-wrenches] Name that rail...
>
>
>
> Peak solar?
>
> Sincerely,
> Glenn Burt
> Sent from my 'smart' phone so please excuse grammar and typos.
> --
>
> *From: *Benn Kilburn 
> *Sent: *‎8/‎13/‎2015 17:29
> *To: *RE-wrenches 
> *Subject: *[RE-wrenches] Name that rail...
>
> Can anyone identify this rail type?
>
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*Haleakala Solar*
*Director of Construction*

*NABCEP Certified PV Installer # 091209-155*
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Re: [RE-wrenches] 1000-volt circuits

[James Rudolph]

Aloha Marco,
Did you come up with any solutions to this problem? We may have a few here
on Oahu in development that may go this way as well.

Mahalo Nui Loa,

*James B. Rudolph*
*Haleakala Solar*
*Director of Operations*
*NABCEP Certified PV Installer # 091209-155*





On Wed, Jul 1, 2015 at 9:01 AM, Marco Mangelsdorf 
wrote:

>  Hola amigos y amigas.
>
>
>
> We’re doing our first projects here on the Big Island of Hawaii using
> 1000-volt rated inverters.
>
>
>
> The AHJ is informing us that those electricians working on these circuits
> require training specific to working on 600+ volt circuits.
>
>
>
> Anyone know of such training(s)?  As in where to go to find/get such
> training?
>
>
>
> Mahalo,
>
> marco
>
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[RE-wrenches] Aloha!

[James Rudolph]

Does anybody have any experience with Silvero panels. we may be getting a
container full these and  I was looking for some feedback.

Mahalo,



*James B. Rudolph*
*Haleakala Solar*
*Director of Construction*

*NABCEP Certified PV Installer # 091209-155*
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Re: [RE-wrenches] Canadian Solar

[James Rudolph]

Aloha Kris,
We use tons of them  paired with Enphase inverters here is Hawaii. They do
well in the elements and have a good third party warranty too.




On Fri, Jul 11, 2014 at 8:52 AM, Kristopher Schmid 
wrote:

> Hi All,
>
> I have a client interested in using Canadian Solar modules.  Anyone that
> can share their experience with them good, bad, or otherwise would be
> greatly appreciated.  Also, a recommended distributor?
>
> Thanks,
> Kris
>
> --
> Shine On!
>
> Kris Schmid
> Legacy Solar, LLC
> 864 Clam Falls Trail
> Frederic, WI 54837
> www.legacysolar.com
> 715-653-4295
> NABCEP Certified PV Installer
> Licensed Wisconsin Master Electrician
> BSEE
>
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Re: [RE-wrenches] 1000V PV In Hawaii

[James Rudolph]

I believe the first pubic commercial system just went in at Turtle Bay
Resort. REC designed and built the system) I have heard that they had alot
of problems finding equipment here rated for 1000v and ending up somehow
putting in 600v equipment that was flagged by the AHJ at final inspection.
Jeff Delany was the project manager.


On Mon, May 5, 2014 at 6:52 AM, Max Isaacs  wrote:

> Wrenches,
>
> I'm am in the initial phases of design for a commercial system in Honolulu
> and I'm planning on 1000v on the DC side and I want to know if anyone has
> had any issues with the AHJ on going over 600v.  Any advise on designing or
> installing in Hawaii is appreciated.
>
> Best,
> Max
> ---
> Max Isaacs
> Oak City Power LLC
> NC Electrical License 29594-U
> NABCEP PV Installer Certification # 091209-88
> Office:   (919) 628-0268
> Mobile:  (919) 717-9901
>
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[RE-wrenches] Nano cleaning and sealing products.

[James Rudolph]

Aloha Wrenches,
Now that one in ten houses have a solar system here in Oahu there are a lot
of companies selling products and services like this one below.


http://www.cenano.net/solar-photovoltaic/

Here  are a few of their claims:

*Cenano Pacific* exclusive nanotechnology line proudly introduces the #1
solar panel sealant and protectant in the world!  Proven to seal and
protect your solar panels plus increase their efficiency.  It's 100% safe
and will not affect your panels warranty.  The sealant repels fat, dirt,
oil and water on all solid, non-absorbent surfaces such as glass, metal,
plastic, chrome, ceramics, and stainless steel.


Is there anybody out that can share some stories or insights on products
like this?

Do they even work? When exposed to the sun for years will they turn from
clear to opaque..etc.

Will this product or others like this void manufactures warranty's?

Mahalozz in advance,




*James B. Rudolph*

*Haleakala Solar*

*Director of Construction*

*ES Electrician # 10816*

*NABCEP Certified PV Installer # 091209-155*
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[RE-wrenches] Who has the best overall solar racking solution?

[James Rudolph]

Greetings Fellow Wrenchies,
With all the racking options out there today, are there any stand outs in
terms of quality and installation time.
We are in the process of evaluating our racking system and with all the
options its a little mind boggeling.

Mahalo in advance!



*
James B Rudolph*
*Heleakala Solar*
**
*Director of Construction*
*NABCEP Certified PV Installer
*
*Licensed ES Electrician
*
*
*
*
*
*

*Don't get me wrong: I love nuclear energy! It's just that I prefer fusion
to fission. And it just so happens that there's an enormous fusion reactor
safely banked a few million miles from us. It delivers more than we could
ever use in just about 8 minutes. And it's wireless!   -
William McDonough
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Re: [RE-wrenches] Power One Microinverters

[James Rudolph]

Aloha,
We have installed one system so far and it seems to be working and
performing well.
The one thing I have learned is that Aurora micros only have a NEMA 4
rating while all Enphase micros have the NEMA 6. This could be a big
problem down the road perhaps. Also the  wireless data monitoring was a
little tricky to set up and get going and, is only good for 30 devices.
 Our customer had limited roof space so this was the best option for him at
the time.

Mahalo,



On Tue, Oct 30, 2012 at 6:08 AM, August Goers  wrote:

> Hi Wrenches -
>
>
>
> Has anyone tried out the new Power One microinverters?
>
>
>
>
> http://www.power-one.com/renewable-energy/products/solar/string-inverters/panel-products/aurora-micro/series-0
>
>
>
> Seems like a similar concept to Enphase M215 as far as the trunk cabling
> goes. However, their monitoring device called "Aurora CDD" communicates
> wirelessly with the microinverters compared to power line communications
> with Enphase. They also seem to be at a higher price point compared to
> Enphase although they are higher wattage at 250 and 300 Watts.
>
>
>
> Best,
>
>
>
> August
>
>
>
>
>
> August Goers
>
>
>
> Luminalt Energy Corporation
>
> San Francisco, CA 94110
>
> m: 415.559.1525
>
> o: 415.641.4000
>
> aug...@luminalt.com
>
>
>
>
>
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-- 
*
James B Rudolph*
*Heleakala Solar* *
*
*Director of Construction*
*NABCEP Certified PV Installer*
*
*
*
*
*

*Don't get me wrong: I love nuclear energy! It's just that I prefer fusion
to fission. And it just so happens that there's an enormous fusion reactor
safely banked a few million miles from us. It delivers more than we could
ever use in just about 8 minutes. And it's wireless!   -
William McDonough
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[RE-wrenches] PowerOne Micro Inverters-

[James Rudolph]

Wrenchies,
Does anybody out there have any positive feed back on the PowerOne micro
inverters yet? We need to build a few systems with these here on O'ahu due
to the impossibility of finding any M-210 Enphase micros.

Mahalo in advance

-- 
*
James B Rudolph*
*Heleakala Solar* *
*
*Director of Construction*
*NABCEP Certified PV Installer*
*
*
*
*
*

*Don't get me wrong: I love nuclear energy! It's just that I prefer fusion
to fission. And it just so happens that there's an enormous fusion reactor
safely banked a few million miles from us. It delivers more than we could
ever use in just about 8 minutes. And it's wireless!   -
William McDonough
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Re: [RE-wrenches] Reducing Glare from Solar Modules

[James Rudolph]

Here in Hawaii we have a few problems with HOA's ( I mean who doesn't) in
regards with this and some other issues. What we are exploring is trying to
install some sort of living growing hedge in between the homes. Another
option is to use mono panels in areas like this in the future.

Aloha,


On Mon, Aug 20, 2012 at 8:21 AM, Sequoya Cross wrote:

> We have a customer who is up against a very unhappy neighborhood in
> Wyoming regarding his solar installation. It consists of 24, Schott Poly
> mods flush mounted on a 4/12 pitch, metal standing seam roof. The next door
> neighbor is complaining that the glare from the modules is blinding him at
> certain points in the day (and year).
>
> Has anyone come up against this issue and do you have any solutions that
> we may employ (i.e. anti-glare film, some kind of coating, a shade cloth).
> The customer is more than happy to lose efficiency instead of losing the
> entire installation.
>
> ** **
>
> Thanks-
>
> ** **
>
> Sequoya Cross
>
> Backwoods Solar Electric Systems
>
> ** **
>
> ** **
>
> ** **
>
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-- 
*
James B Rudolph*
*Heleakala Solar* *
*
*Director of Construction*
*NABCEP Certified PV Installer*
*
*
*
*
*

*Don't get me wrong: I love nuclear energy! It's just that I prefer fusion
to fission. And it just so happens that there's an enormous fusion reactor
safely banked a few million miles from us. It delivers more than we could
ever use in just about 8 minutes. And it's wireless!   -
William McDonough
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[RE-wrenches] Line side taps in Hawai'i

[James Rudolph]

Aloha Wrenches,

I have recently started working in Hawaii on the island of Oahu and have
run into some interesting problems with the AHJ's. The biggest issue is
nobody is allowing line side taps on the island, so most of are larger
systems are requiring service upgrades, this also requires replacing  the
feeder of course and plenty of trenching which adds so much time and cost
to the whole process.. Now I know Bill Brooks was on island recently and
and this seems to have done no good. I was wondering if anybody can shed
some light on this issue and the reasons why they would not allow this code
compliant option. This is allowed on commercial systems here just not
residential to be clear.

 And If your out there Bill, do you have any suggestions on how to approach
this matter with the local inspectors???

Mahalo,

-- 
*
James B Rudolph*
*Heleakala Solar* *
*
*Director of Construction*
*NABCEP Certified PV Installer*
*
*
*
*
*

*Don't get me wrong: I love nuclear energy! It's just that I prefer fusion
to fission. And it just so happens that there's an enormous fusion reactor
safely banked a few million miles from us. It delivers more than we could
ever use in just about 8 minutes. And it's wireless!   -
William McDonough
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[RE-wrenches] Shoals Technologies?

[James Rudolph]

Dearest Wrenches,

Does anybody out there have any feedback or experience with Shoals
Technologies commercial grade combiner boxes with their  SNAPshot™ wireless
monitoring options. We are exploring  data monitoring options so any
thoughts would be greatly appreciated.

Thanks in advance,

*
James B Rudolph
NABCEP Certified PV Installer
California Certified Journeyman Electrician

*
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[RE-wrenches] AL vs CU

[James Rudolph]

Gurus,
Other than the cost and increased labor what else could be a factor in
determining whether or not to use copper or aluminum in long output
circuits?

-- 
*
James B Rudolph
NABCEP Certified PV Installer
California Certified Journeyman Electrician

*Don't get me wrong: I love nuclear energy! It's just that I prefer fusion
to fission. And it just so happens that there's an enormous fusion reactor
safely banked a few million miles from us. It delivers more than we could
ever use in just about 8 minutes. And it's wireless!   -
William McDonough
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[RE-wrenches] best way to connect 12v fans directly to panels with a higher voltage?

[James Rudolph]

Dearest Wrenchies,

So here is the situation,  we have a customer with a passively heated kiln
for drying lumber. Basically it is a greenhouse. There is no supplemental
heat, or power at the site where it is. When it begins to be heated
moisture will be driven from the lumber, which needs to be exhausted by
fans. We need PV because there is no power there, and because we want to be
completely solar. Rather than set up a charger controller and batteries,
along with humidity controls for the fans, I thought it would be simplest
to get some panels and wire them directly to the fans. That way, when the
sun is shining and the kiln is being heated, the fans will be on to exhaust
the moisture, and when the sun is not they are off. With that said the
customer has alredy bought the 4,12v/18a  fans from grainger and has some
ASW 240w 37V panels. I was wondering( since my work is always grid-tie
applications) what would be the best code compliant way to hook up all this
together.
Many thanks in advance for the help.

Sunny Regards,


*James B Rudolph
NABCEP Certified PV Installer
Certified Californian Journeyman

*
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Re: [RE-wrenches] Expansion on conduits on commercial roof tops!

[James Rudolph]

Thanks fellas,
I guess I was not clear. We are using RMC or IMC on all of are roof top
runs with the appropriate expansion fittings. I am trying to figure out how
to deal with the movement of the conduits at the bases where we strap it
down to the base( a curb with a small peice of shallow b-line placed on it
(4') ).

On Thu, Dec 22, 2011 at 12:06 PM, Jason Szumlanski wrote:

> PVC conduit? Search for “Carlon PVC Expansion Fittings.”
>
> ** **
>
> They publish a good PDF that shows when expansion fittings are required
> and how to install them properly.
>
> ** **
>
> Jason Szumlanski
>
> Fafco Solar
>
> ** **
>
> ** **
>
> *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
> re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *James Rudolph
> *Sent:* Thursday, December 22, 2011 9:39 AM
> *To:* RE-wrenches
> *Subject:* [RE-wrenches] Expansion on conduits on commercial roof tops!***
> *
>
> ** **
>
> Howdy Wrenches,
>
> I was wondering how everybody is dealing with expanding conduits on roof
> tops? Do we have an accepted best practice on this?. What I am really
> looking for is a way to starp long conduit runs on commercial rooftops in
> direct sun that allow movement and expanision joints to do thier job.
>
> Mahalo in advance!
>
>
>
> *James B Rudolph
> NABCEP Certified PV Installer
>
> *
>
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-- 
*James B Rudolph
NABCEP Certified PV Installer

*
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[RE-wrenches] Expansion on conduits on commercial roof tops!

[James Rudolph]

Howdy Wrenches,

I was wondering how everybody is dealing with expanding conduits on roof
tops? Do we have an accepted best practice on this?. What I am really
looking for is a way to starp long conduit runs on commercial rooftops in
direct sun that allow movement and expanision joints to do thier job.

Mahalo in advance!



*James B Rudolph
NABCEP Certified PV Installer

*
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Re: [RE-wrenches] GEC and EGC Advice

[James Rudolph]

Allen,

As far as best practices go, I would route all those conductors and GEC/ECG
in the same raceway."  To maintain the shortest electrical time constant in
each circuit, the ECG should be routed as closely as possible to the
circuit conductors. This routing facilitates the operation on over-current
devices"(2011 Nec Handbook). And as far as safety goes I would never rely
on the continuity of the conduit to be my EGC. What if it seperatres some
how due to thremal expansion or some other unforeseen calamity? I do think
SolarPro just ran a great grounding article recently too in regards to the
2011 code changes.
There is also a provision in 690 to combine the EGC&GEC into one conductor
(690.47(c)(3).

I hope this helps,




On Tue, Dec 6, 2011 at 3:29 AM, Allen Frishman wrote:

> Fellow Wrenchers,
> I know this topic has come up before and I have a understanding but I am
> looking for best practices advice.
>
> When installing a 50KW or larger 3 phase 208V (WYE Service) Inverter on a
> roof do you run your Grounding Electrode Conductor in a separate conduit
> from the 3 hots, and the Equipment Grounding Conductor or do you run it all
> in the same conduit together.
>
> My thought is to run it all in the same conduit and utilize the metalic
> conduit as the Equipment Ground instead of running a actual conductor for
> the EGC.
>
> All feedback is appreciated.
>
> *Al Frishman*
> AeonSolar
>
> *(917) 699-6641 - cell*
> *(888) 460-2867*
> *www.aeonsolar.com*
>
>
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-- 
*James B Rudolph
NABCEP Certified PV Installer

*
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Re: [RE-wrenches] Code reviewer issue with array disconnect location

[James Rudolph]

Jeff,
We have had some issues with this also
.maybe try this ref from the 2011 code 690.16 (b)  where the disconnect
is located more than 1.8 m (6ft) from the overcurrent device, a directory
showing the location of each disconnect shall be installed at the
overcurrent device location

On Thu, Nov 17, 2011 at 3:40 PM, Ryan Mayfield  wrote:

> Jeff,
>
> Try pointing them to 690.14(B). This allows for PV source circuit isolating
> switches on the PV side of the disconnecting means. As you describe it, the
> dc disconnect at the inverter is the required PV disconnecting means and
> you
> can describe the combiner disconnects as source circuit isolating switches.
> This paragraph doesn't make mention of accessibility.
>
> Good luck,
>
> Ryan
>
>
>
> -Original Message-
> From: re-wrenches-boun...@lists.re-wrenches.org
> [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jeff Yago
> Sent: Thursday, November 17, 2011 11:57 AM
> To: 'RE-wrenches'
> Subject: Re: [RE-wrenches] Code reviewer issue with array disconenct
> location
>
> Here's another one of those reviewers that do not know what they are
> reviewing and just cause added hours of lost time.  Large 112 kW array
> mounted on top of structural steel beams above multi-story parking deck.
> Beams straddle center up and down ramps so no parking spaces are lost.
> Multiple rows of modules and require ladders to access.  Budget reviewer
> deleted my design of grated walkways behind each row, so you must use tie
> offs to work on any part of system.
>
> Each row includes a fused combiner box at center line, with individual
> conduit from each grouped down centerline on high mounting then down to
> inverter located outside on top deck.  Inverter includes both AC and DC
> disconnects which are readable accessible. Other AC disconnects included in
> electric room and outside at meter.
>
> Due to long runs from each array row back down to inverter, I specified the
> fused combiner boxes to include a DC disconnect option located in the cover
> (memory of Target Store conduit fire!) which not only allows disconnecting
> any single row without shutting down entire system, but also useful for
> testing and service.
>
> Reviewer demands this "disconnect" meet code requirement that a
> "disconnect"
> must be readable accessible.  I have told them we cannot separate this
> disconnect from the combiner box and will not relocate these high voltage
> combiner boxes down at eye level on a raised parking deck where any student
> could gain access, so if they make an issue of this we will use a different
> combiner box that does not have this option (and also loose added
> protection
> of conduit runs between combiners and inverter).  However, I would like to
> refer to code and I see no mention of a combiner box as required by code so
> there is no reference to it having a disconnect.
>
> Suggestions?
>
> Jeff Yago
> DTI Solar Inc.
>
>
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-- 
*James B Rudolph
NABCEP Certified PV Installer

*
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[RE-wrenches] S5! looking clamps-

[James Rudolph]

Greetings Wrenchies,

Has anyone seen these mounting clamps (  see attachment)?  I did contact
S-5! and they were puzzled. I am trying to get the wind load and
engineering data for this particular clamp. I pulled this off a very poorly
installed system on a standing seem metal roof, and have been hired to
correct all issues.








*James B Rudolph
NABCEP Certified PV Installer

*
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Re: [RE-wrenches] cable spacing in trenches

[James Rudolph]

Separation is an issue the NEC does not address clearly .However, please
make sure you allow adequate room to repair the conduit if damaged, and 12'
seems to be the magic number. I lso had no luck looking in 490.

NEC 300.4(C)(2)(e) also seems a bit relevant where it allows for conductors
of different voltage ratings in manholes "if the conductors of each system
are permanently and effectively separated from the conductors of the other
systems...", but again this may be referring to separate trenches with
different system voltage ratings entering the same manhole for tapping,
allowing access for maintenance or other uses.



On Thu, Nov 3, 2011 at 5:42 PM, Jerry Caldwell wrote:

> Can anyone direct me to the NEC article that stipulates how many inches of
> separation must be between cables operating at different voltages?
>
> I have a project with PV combiner box home runs at 1,000 volts DC in the
> same trench with 12.47 kV cables.  Table 300.5 shows minimum cover
> requirements for direct burial cables, but this is the distance beneath
> grade the cables must be.  Is there anywhere in the code that calls for a
> minimum separation distance between cables at different voltages?
>
> Thanks,
> Jerry Caldwell
>
>
>
> --
> *From:* Marco Mangelsdorf 
> *To:* 'RE-wrenches' 
> *Sent:* Thursday, November 3, 2011 2:27 PM
> *Subject:* [RE-wrenches] under performing Enphase inverters
>
>   For the first time, several weeks ago, after 40-50 Enphase installs,
> we’ve come across at least two M210s that we putting out consistently lower
> outputs than their immediate neighbors.
>
> We replaced the two mods first, which made no difference.  Then, in
> consultation with Enphase, replaced the M210s.  After replacing them, the
> power output was as it should be.
>
> Now I’ve got another suspect system with several underperforming mods out
> of (36).
>
> Has anyone else had this experience?
>
> Thanks,
> marco
>
>
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[RE-wrenches] Equipment Grounding Conductor (EGC)-

[James Rudolph]

Dearest Wrenches,

I was wondering what the "official" postion was with EGCs being ran where
they came in contact with racking. Is it standard practice to use a bare or
a insulated ECG? I do recall having some AHJs in Marin, CA  mandating the
use of an insulated ground wire, due to the fact that it came into contact
with dissimilar metals (anodized AL rail and galvanized B-line strut) on
the roof.  One approach was to use weeb grounding clips at each module to
limit the need and length of the EGC etc.  I was just hoping to hear how
everybody  was dealing with this issue.

Thanks in advance,


*James B Rudolph
NABCEP Certified PV Installer
Licensed Master Electrician
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[RE-wrenches] Renusol CS60 flat roof racking.

[James Rudolph]

Wrenches,

Does anybody out there have experience with the new Renusol CS60 flat roof
racking system. We are about to install some, and I was hoping to get some
feedback on how it went. It seems like its going to be challenging to get
these things to look good.

Mucho Gracias in advance!

Sunny Regards,


*James B Rudolph
NABCEP Certified PV Installer

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[RE-wrenches] interrupting current calculations used to determine the interrupting of the AC equipment.

[James Rudolph]

Dearest Wenches,

I received an e-mail from PE reviewing one of our projects to build, and
this is what they wrote-

No interrupting current calculations were included.  It is suggested the
utility company be consulted for available at the service entrance and these
values be used to determine the interrupting of the AC equipment.

Does any one out there have experience dealing with this issue, or have the
ability to shed some light on this subject.

Many thanks in advance,

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NABCEP Certified PV Installer

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Re: [RE-wrenches] ground

[James Rudolph]

I agree with Ray. The best ground clamp I have found for the money ($1600)
is the Fluke 1630 ,its real easy to use and work well.

On Sat, Oct 1, 2011 at 1:41 AM, Ray Walters  wrote:

> I'm a big fan of grounding at the array, and was sorry to lose 690.47D
> (which also clearly allowed the structure to be considered an electrode) .
> I think if you look at the sq ft. of metal in contact with the concrete,
> you can make a credible case for the frame fitting the definition of an
> electrode. IMHO, it's all about a low impedance path to ground.  Whether
> it's 20 ft of 1/2" rebar, or 4 ft of 6" diam pipe, or 4 ft of 2" x 2" angle
> iron, its all roughly the same required 2 sq ft of surface area in contact
> with the concrete.
>
> Actually if you want to be a real stickler and also enforce 250.53A2, a
> tough AHJ might demand 2 electrodes at the array in addition to the
> structural grounding all ready present.
> Me? I like the exception if the measured ground impedance is less than 25
> ohm. Most inspectors will be more than satisfied, if you just show them a
> quick reading with a clamp-on ground impedance tester.
> What If you're still over 25 ohms? If you're in lightning country, you
> really should sink another electrode anyway.
>
> Ray
>
>
>  On 9/30/2011 7:04 PM, Kent Osterberg wrote:
>
>> Ray,
>>
>> I believe that a pole-mounted or grounded-mounted PV array is considered a
>> structure and requires a ground electrode per 250.32.  Perhaps the exception
>> would cover the possibility a installing very small system without a ground
>> electrode.
>>
>> Kent Osterberg
>> Blue Mountain Solar, Inc.
>>
>>
>>
>> Ray Walters wrote:
>>
>>> I've also used 250.52A(7) defining plate electrodes. A 6" Sch 40 pipe 4
>>> ft in the ground has more than the required 2 sq ft of surface metal, and is
>>> at least the required 1/4" thickness.
>>> Also, the 2011 NEC dropped 690.47 D which required a grounding electrode
>>> at the array. Are you sure you still need this? I believe 2011 only requires
>>> you bond all the metal to the EGC, as always.
>>>
>>> Ray Walters
>>>
>>> On 9/30/2011 8:24 AM, Kent Osterberg wrote:
>>>
 The requirements listed in 250.52(3) were changed in 2011. The rebar
 used is allowed to be near the bottom of the footing or in vertical
 foundation walls that are in direct contact with earth. If there was in
 doubt in the past that the rebar in the concrete of a pole mount was a
 suitable grounding electrode, the changes in 2011 should remove it.

 Kent Osterberg
 Blue Mountain Solar, Inc.

 Richard L Ratico wrote:

> As Dan points out, 250.52(A)(3) specifies several installation
> requirements in
> order for a concrete encased electode to qualify as a permitted
> Grounding
> Electrode. A pole mount foundation would certainly qualify if it met
> those
> requirements.
>
> Even if the requirements are not met, IMHO, any opportunity to
> inexpensively
> increase the grounding integrity of a system should not be overlooked,
> particularly in lightning country. Of course, a code compliant
> Grounding
> Electrode System is still required. Bonding a non compliant, but never
> the less,
> very substantial additional "electrode" to that system would not hurt
> anything
> and quite possibly help considerably.
> Dick Ratico
> Solarwind Electric
>

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Re: [RE-wrenches] ground

[James Rudolph]

Todd,

Article 250.52(a)(3) from the 2008 Code states this

(3) Concrete-Encased Electrode. An electrode encased
by at least 50 mm (2 in.) of concrete, located horizontally
near the bottom or vertically, and within that portion of a
concrete foundation or footing that is in direct contact with
the earth, consisting of at least 6.0 m (20 ft) of one or more
bare or zinc galvanized or other electrically conductive
coated steel reinforcing bars or rods of not less than 13 mm
(1⁄2 in.) in diameter, or consisting of at least 6.0 m (20 ft) of
bare copper conductor not smaller than 4 AWG. Reinforcing
bars shall be permitted to be bonded together by the
usual steel tie wires or other effective means. Where multiple
concrete-encased electrodes are present at a building
or structure, it shall be permissible to bond only one into
the grounding electrode system.

It would be wise to consult the local AHJ if this is permisssble with the
rebar. You want to make sure that you have the best grounding system
possible with the chance of a lighting strike.

Good Luck!


On Thu, Sep 29, 2011 at 4:10 PM,  wrote:

> Does anyone know if it is ok to use the rebar in a pole mount foundation as
> a ufer ground? I need to ask the inspector too, but thought I'd ask here
> first.
>
>
>
> Todd
>
>
>
>
>
>
>
> Sent from Finest Planet WebMail.
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[RE-wrenches] Designing PV systems for lightning prone areas

[James Rudolph]

Dear Wrenches,

Does anybody have any best practices for designing large PV arrays on metal
building in lightning prone areas? Lightning arrestors on the DC side and
Surge suppressors on the AC load side? Any input or resources would be
greatly appreciated.

Sunny Regards,

James Rudolph
NABCEP Certified Installer
Master Electrician
SF Energy


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Re: [RE-wrenches] Louis Valenta / interisland Solar

[James Rudolph]

Mahalo and Rest in Peace Louis~ I agree with you boB. A great man who helped
us tremendously with our jobs in Amerika Samoa.you will be
missed Louis.
On Tue, Aug 30, 2011 at 6:33 PM, boB Gudgel  wrote:

>
>
> I am sad to report that *Louis Valenta of interisland Solar in Hawaii has
> passed away in the last few days.
>
> Louis had a heart attack about a week ago and this is probably related to
> that.
>
> **He was a very good person, friend and also  extremely knowledgeable in
> our industry.
> **
> We will really miss **Louis.*
> *
> boB
>
> *
>
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[RE-wrenches] Invitation to connect on LinkedIn

[James Rudolph]

LinkedIn


   
I'd like to add you to my professional network on LinkedIn.

- James

James Rudolph
Field Operations Manager at Island Energy & Marine 
United States

Confirm that you know James Rudolph
https://www.linkedin.com/e/-xy4d8h-gpj06jcp-6v/isd/3387742626/lFoupZu8/


 
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Re: [RE-wrenches] Oatey and Standoff vs QuickmountPV Labor

[James Rudolph]

Jamie,

  My crew and I have installed the quickmounts almost twice as fast as the
Oateys consistently for a good year or two. My main concern with Oateys is
that rubber boot, it seems to be the Achille's heel of the whole system. How
long does it take before that gasket is shot? This has been the main reason
we switched, not to mention the huge savings in install times.

Sunny Regards~

On Sat, Apr 23, 2011 at 2:59 PM, Jamie Johnson  wrote:

>  Wrenches,
>
> We have been asked to quote a large number of installs on comp shingle
> roofs for an individual owner who requires Oatey flashing's with a 3"
> standoff on all installations.
>
> For the past 2 years we have installed the QuickmountPV product on comp
> shingle roofs and are use to the labor rate quoted for that, my notes
> from 2+ years ago seem to reflect a 20+% savings in labor by using the QMPV
> vs the Oatey and standoff method.
>
> Since my notes may not be accurate, I am curious if you are willing to
> share, what the rest of you have experienced with the labor difference?
>
> Thanks in advance.
>
> *Jamie Johnson
> NABCEP Certified PV Technical Sales Professional
> NABCEP Certified Solar PV Installer
>
> General Manager*
> *SOLAR POWER ELECTRIC*
> **
> **
>
>
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Re: [RE-wrenches] Slow clocks

[James Rudolph]

Here in American Samoa the electronic clocks always run fast, a few minutes
gained every other day due to high frequency issues (65+Hz) that plague the
Island. The local power authority keeps the diesel generators cranked.

Hope this help a little.
.

On Tue, Apr 5, 2011 at 10:51 AM, Kristopher Schmid
wrote:

> I have an off-grid client who tells me that his clocks lose about 1 minute
> per hour while he is running his backup generator.  Has anyone seen this
> before?  Do clocks use the zero crossing on a 60Hz wave for keeping time
> and
> could a frequency discrepency in the generator cause this?
>
> My thanks to the brain trust...
>
> Kris
>
> Legacy Solar, LLC
> 864 Clam Falls Trail
> Frederic, WI 54837
> 715-653-4295
> sol...@legacysolar.com
> www.legacysolar.com
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Re: [RE-wrenches] modules near salt water

[James Rudolph]

Jeff,
Hey I am on a project (600kw) down here in American Samoa, and we are using
SolarWorld 240's. They were recommended to us by Inter Island Solar in
Hawaii. As of Jan 2010 SolarWorld had no disclaimer on their modules.



On Tue, Oct 26, 2010 at 6:34 AM, Jeff Yago  wrote:

>  Most of our central Virginia solar projects are not near saltwater, but
> Virginia does have a long eastern coastline on the ocean and we do get a few
> calls from time to time where salt corrosion is a problem.   Just starting a
> new proposal where ocean salt corrosion is an issue and noticed that most
> module manufacturer's are now putting a disclaimer in their warranties that
> voids everything if a failure is related to salt water corrosion.
>
> I am sure there are some manufacturers that do offer a module line for salt
> water applications, but not sure brand or model number.   Which modules in
> the 150 to 240 watt range are actually designed for salt water applications?
>
> Thanks,
>
> Jeff Yago .
>
>
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