Re: [RE-wrenches] Thermal imaging

[Bill Hoffer]

Andrew

Next SEI class PV351L
<http://www.solarenergy.org/workshop/solar-training-pv-systems-tools-and-techniques-operation-and-maintenance-lab-week-grid-dire?wid=1872>is
in Aug, the cost is high , but they limit the instructor to student ratio
to 1:4 and the entier class to 12 people to make sure everyone gets a
chance for hands on with all the fancy new tools!

It is awesome!

Bill


On Thu, Jun 13, 2013 at 3:36 PM, Andrew Truitt  wrote:

> Thanks all!
>
> Jeff - I like the price point on that Fluke VT02!  It seems like it would
> do the trick for most electrical applications.  Have you tried locating hot
> spots on modules with it?
>
> Bill - The Flir E-series looks awesome but is a little out of my price
> range.  I looked at that SEI course but it just completed.  However, I see
> that you are one of the instructors!  Any idea when the next class will
> be?  Is there any way for me to access the course materials?
>
> Randy - The Flir i7 clearly can handle both the electrical and the module
> hot-spot duties.  Thanks for the great image!
>
>
>
> For a brighter energy future,
>
>
> Andrew Truitt
> NABCEP Certified PV Installation Professional™ (ID# 032407-66)
>
> Principal
> Truitt Renewable Energy Consulting, LLC
>
> (202) 486-7507
>
> LinkedIn Profile <http://www.linkedin.com/pub/andrew-truitt/8/622/713>
>
> Company Website <http://truittreconsulting.weebly.com/>
>  <%28202%29%20486-7507>
>
>
> [image: 24 copy.jpg]
>
> "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
>
>
>
>
>
>
>
>
>
>
> On Wed, Jun 12, 2013 at 9:14 AM, Randy wrote:
>
>> Andrew,
>>
>> We purchased the Flir I7 based on Bill Brooks recommendations.  It has
>> worked well. Plenty of battery life for doing large arrays
>>
>> ** **
>>
>> We have evaluated over 400kW of arrays and we have found issues – we
>> found modules that show hot cells. We learned the temperature impact of
>> shading and dirt or bird poop on the module.  We discovered 7 modules at
>> one 120kW site and when we did IV curves we found  only one module had
>> reduced output. 
>>
>> ** **
>>
>> See attached photo as an example.
>>
>> Good luck.
>>
>> Randy
>>
>> ** **
>>
>> Randy Sadewic
>>
>> Positive Energy
>>
>>  
>>
>> Office: 505 424-1112
>>
>> Cell:505 570-0137
>>
>> *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
>> re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Andrew Truitt
>> *Sent:* Tuesday, June 11, 2013 4:55 PM
>> *To:* RE-wrenches
>> *Subject:* [RE-wrenches] Thermal imaging
>>
>> ** **
>>
>> Wrenches - I am considering the purchase of a thermal imaging camera for
>> PV system commissioning applications.  Prices seem to range from $1,000 to
>> $10,000+.  Primary manufacturers seem to be Fluke and Flir, with Extech,
>> Ideal and Milwaukee offering a few products as well.  It seems to me that
>> the key factors to consider are temperature range, thermal sensitivity,
>> screen resolution, screen size, battery life, type of image capture and
>> price.  Does anyone have experience with using thermal imaging to identify
>> temperature irregularities in modules and/or electrical equipment?  What
>> temperature range, thermal sensitivity, and screen resolution is needed for
>> both/either of these tasks?  What have been the key factors/specifications
>> in terms of ergonomics and functionality?  Any preferences in terms of
>> manufacturer?
>>
>> ** **
>>
>> ** **
>>
>> For a brighter energy future,
>>
>>
>> Andrew Truitt
>> NABCEP Certified PV Installation Professional™ (ID# 032407-66)
>>
>> Principal
>> Truitt Renewable Energy Consulting, LLC
>>
>> (202) 486-7507
>>
>> LinkedIn Profile <http://www.linkedin.com/pub/andrew-truitt/8/622/713>***
>> *
>>
>> Company Website <http://truittreconsulting.weebly.com/>
>>
>>
>> [image: 24 copy.jpg]
>>
>> "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 eno

Re: [RE-wrenches] thermal imaging

[Daniel Williams]

We have been using the Flir i7 for many years. I can also attest to the
fact that it is a relatively inexpensive tool that should be in your kit.
The more you can document, the better, when going for warranty
replacements. Or, even better yet, providing the math and physics proof the
module is working within manufacturer specifications. My memory may not be
correct but I think Exceltech and Flir are owned by the same company.

You can find them at SPI, I have been to their booth and live demos.

Dan


-- 
Daniel Williams
Powerfully Green
NABCEP Certified Solar PV Installer - 091110-127
NABCEP PV Technical Sales # PVTS012911-96
Ph: 612-990-3213
Fax: 612-605-5748
Email: dan.willi...@powerfullygreen.com
www.PowerfullyGreen.com

"You must be the change you wish to see in the world."
--  Mahatma Gandhi
___
List sponsored by Home Power magazine

List Address: RE-wrenches@lists.re-wrenches.org

Change email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org

List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org

List rules & etiquette:
www.re-wrenches.org/etiquette.htm

Check out participant bios:
www.members.re-wrenches.org

Re: [RE-wrenches] Thermal imaging

[Bill Hoffer]

Jason

Accuracy of measurements is dependent on the size of the hotspot and the
circle in the bulls eye of the camera, see the module attached to Randy's
response.  The big problem with the less expensive cameras is that ratio is
totally distance dependent, and you need to get really close to get an
accurate measurement.  As far as I know that can change with
interchangeable lens only available on more expensive models.  It is one
thing to be looking at a 6" cell in a panel and another to be looking
valves and flow through smaller pipes.   Also realize that there will be
some interpretation in the results because you can only see heat that gets
radiated through the pipes, especially if using PVC.  I bet it would be an
awesome trouble shooting tools though, often you can find the answers you
need with less fun tools!   I have been really satisfied with my Flir E-40
which has a lot of useful features not available in the lower models, I
believe it ran me about $4500 a couple of years ago, but i am sure the
prices have been dropping as they are selling more and more of them!  I
definitely would recommend one of the E series if you are serious about
using it and the lower models only if you are curious and want an entry
level camera to get familiar with the technology.  Flir has an awesome
online learning course that can help you decide the best tool for what you
want to do!

Bill


On Wed, Jun 12, 2013 at 11:50 AM, Jason Szumlanski wrote:

> I've been considering this for solar thermal (pool heating) applications.
> Any comments on how far away these can be effective? For example, what if I
> am 30 feet away, trying to diagnose a flow rate issue through a large array
> of panels? I would need to get far enough away to get the whole system in
> the field of view. Would I be able to see hot spots where panels have no
> flow of water?
>
> Jason Szumlanski
>  On Jun 12, 2013 11:14 AM, "Randy"  wrote:
>
>> Andrew,
>>
>> We purchased the Flir I7 based on Bill Brooks recommendations.  It has
>> worked well. Plenty of battery life for doing large arrays
>>
>> ** **
>>
>> We have evaluated over 400kW of arrays and we have found issues – we
>> found modules that show hot cells. We learned the temperature impact of
>> shading and dirt or bird poop on the module.  We discovered 7 modules at
>> one 120kW site and when we did IV curves we found  only one module had
>> reduced output. 
>>
>> ** **
>>
>> See attached photo as an example.
>>
>> Good luck.
>>
>> Randy
>>
>> ** **
>>
>> Randy Sadewic
>>
>> Positive Energy
>>
>>  
>>
>> Office: 505 424-1112
>>
>> Cell:    505 570-0137
>>
>> *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
>> re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Andrew Truitt
>> *Sent:* Tuesday, June 11, 2013 4:55 PM
>> *To:* RE-wrenches
>> *Subject:* [RE-wrenches] Thermal imaging
>>
>> ** **
>>
>> Wrenches - I am considering the purchase of a thermal imaging camera for
>> PV system commissioning applications.  Prices seem to range from $1,000 to
>> $10,000+.  Primary manufacturers seem to be Fluke and Flir, with Extech,
>> Ideal and Milwaukee offering a few products as well.  It seems to me that
>> the key factors to consider are temperature range, thermal sensitivity,
>> screen resolution, screen size, battery life, type of image capture and
>> price.  Does anyone have experience with using thermal imaging to identify
>> temperature irregularities in modules and/or electrical equipment?  What
>> temperature range, thermal sensitivity, and screen resolution is needed for
>> both/either of these tasks?  What have been the key factors/specifications
>> in terms of ergonomics and functionality?  Any preferences in terms of
>> manufacturer?
>>
>> ** **
>>
>> ** **
>>
>> For a brighter energy future,
>>
>>
>> Andrew Truitt
>> NABCEP Certified PV Installation Professional™ (ID# 032407-66)
>>
>> Principal
>> Truitt Renewable Energy Consulting, LLC
>>
>> (202) 486-7507
>>
>> LinkedIn Profile <http://www.linkedin.com/pub/andrew-truitt/8/622/713>***
>> *
>>
>> Company Website <http://truittreconsulting.weebly.com/>
>>
>>
>> [image: 24 copy.jpg]
>>
>> "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 tha

Re: [RE-wrenches] Thermal imaging

[Jason Szumlanski]

I've been considering this for solar thermal (pool heating) applications.
Any comments on how far away these can be effective? For example, what if I
am 30 feet away, trying to diagnose a flow rate issue through a large array
of panels? I would need to get far enough away to get the whole system in
the field of view. Would I be able to see hot spots where panels have no
flow of water?

Jason Szumlanski
 On Jun 12, 2013 11:14 AM, "Randy"  wrote:

> Andrew,
>
> We purchased the Flir I7 based on Bill Brooks recommendations.  It has
> worked well. Plenty of battery life for doing large arrays
>
> ** **
>
> We have evaluated over 400kW of arrays and we have found issues – we found
> modules that show hot cells. We learned the temperature impact of shading
> and dirt or bird poop on the module.  We discovered 7 modules at one 120kW
> site and when we did IV curves we found  only one module had reduced
> output. 
>
> ** **
>
> See attached photo as an example.
>
> Good luck.
>
> Randy
>
> ** **
>
> Randy Sadewic
>
> Positive Energy
>
>  
>
> Office: 505 424-1112
>
> Cell:505 570-0137
>
> *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
> re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Andrew Truitt
> *Sent:* Tuesday, June 11, 2013 4:55 PM
> *To:* RE-wrenches
> *Subject:* [RE-wrenches] Thermal imaging
>
> ** **
>
> Wrenches - I am considering the purchase of a thermal imaging camera for
> PV system commissioning applications.  Prices seem to range from $1,000 to
> $10,000+.  Primary manufacturers seem to be Fluke and Flir, with Extech,
> Ideal and Milwaukee offering a few products as well.  It seems to me that
> the key factors to consider are temperature range, thermal sensitivity,
> screen resolution, screen size, battery life, type of image capture and
> price.  Does anyone have experience with using thermal imaging to identify
> temperature irregularities in modules and/or electrical equipment?  What
> temperature range, thermal sensitivity, and screen resolution is needed for
> both/either of these tasks?  What have been the key factors/specifications
> in terms of ergonomics and functionality?  Any preferences in terms of
> manufacturer?
>
> ** **
>
> ** **
>
> For a brighter energy future,
>
>
> Andrew Truitt
> NABCEP Certified PV Installation Professional™ (ID# 032407-66)
>
> Principal
> Truitt Renewable Energy Consulting, LLC
>
> (202) 486-7507
>
> LinkedIn Profile <http://www.linkedin.com/pub/andrew-truitt/8/622/713>
>
> Company Website <http://truittreconsulting.weebly.com/>
>
>
> [image: 24 copy.jpg]
>
> "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
>
> ** **
>
>
>
> 
>
> ** **
>
>   
>
> ___
> List sponsored by Home Power magazine
>
> List Address: RE-wrenches@lists.re-wrenches.org
>
> Change email address & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
> List-Archive:
> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>
> List rules & etiquette:
> www.re-wrenches.org/etiquette.htm
>
> Check out participant bios:
> www.members.re-wrenches.org
>
>
>
<>___
List sponsored by Home Power magazine

List Address: RE-wrenches@lists.re-wrenches.org

Change email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org

List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org

List rules & etiquette:
www.re-wrenches.org/etiquette.htm

Check out participant bios:
www.members.re-wrenches.org

Re: [RE-wrenches] Thermal imaging

[Randy]

Andrew,

 

 

Randy Sadewic

Positive Energy

 

Office: 505 424-1112

Cell:505 570-0137

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Andrew
Truitt
Sent: Tuesday, June 11, 2013 4:55 PM
To: RE-wrenches
Subject: [RE-wrenches] Thermal imaging

 

Wrenches - I am considering the purchase of a thermal imaging camera for PV
system commissioning applications.  Prices seem to range from $1,000 to
$10,000+.  Primary manufacturers seem to be Fluke and Flir, with Extech,
Ideal and Milwaukee offering a few products as well.  It seems to me that
the key factors to consider are temperature range, thermal sensitivity,
screen resolution, screen size, battery life, type of image capture and
price.  Does anyone have experience with using thermal imaging to identify
temperature irregularities in modules and/or electrical equipment?  What
temperature range, thermal sensitivity, and screen resolution is needed for
both/either of these tasks?  What have been the key factors/specifications
in terms of ergonomics and functionality?  Any preferences in terms of
manufacturer?

 

 

For a brighter energy future,


Andrew Truitt 
NABCEP Certified PV Installation ProfessionalT (ID# 032407-66)

Principal
Truitt Renewable Energy Consulting, LLC

  (202) 486-7507

LinkedIn Profile <http://www.linkedin.com/pub/andrew-truitt/8/622/713> 

Company Website <http://truittreconsulting.weebly.com/> 


24 copy.jpg

"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

 





 

  

<>___
List sponsored by Home Power magazine

List Address: RE-wrenches@lists.re-wrenches.org

Change email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org

List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org

List rules & etiquette:
www.re-wrenches.org/etiquette.htm

Check out participant bios:
www.members.re-wrenches.org

Re: [RE-wrenches] Thermal imaging

[Bill Hoffer]

Andrew
I highly recommend any of the fluke E series.  Better resolution and you
can get accurate temperature measurements at a safe distance from live
circuits.  IMHO , any lower model, you will wish you could do more!  I also
recommend Solar Energy International's Advanced tools lab, a week of hands
on working with field thermal cameras ,curve tracers, ground continuity and
insulation resistance testers before you buy!  Wish I had done that before
I invested in my advanced diagnostic toysoops I means tools!
Bill

Bill
On Jun 11, 2013 6:47 PM, "Andrew Truitt"  wrote:

> Wrenches - I am considering the purchase of a thermal imaging camera for
> PV system commissioning applications.  Prices seem to range from $1,000 to
> $10,000+.  Primary manufacturers seem to be Fluke and Flir, with Extech,
> Ideal and Milwaukee offering a few products as well.  It seems to me that
> the key factors to consider are temperature range, thermal sensitivity,
> screen resolution, screen size, battery life, type of image capture and
> price.  Does anyone have experience with using thermal imaging to identify
> temperature irregularities in modules and/or electrical equipment?  What
> temperature range, thermal sensitivity, and screen resolution is needed for
> both/either of these tasks?  What have been the key factors/specifications
> in terms of ergonomics and functionality?  Any preferences in terms of
> manufacturer?
>
>
>
> For a brighter energy future,
>
>
> Andrew Truitt
> NABCEP Certified PV Installation Professional™ (ID# 032407-66)
>
> Principal
> Truitt Renewable Energy Consulting, LLC
>
> (202) 486-7507
>
> LinkedIn Profile 
>
> Company Website 
>  <%28202%29%20486-7507>
>
>
> [image: 24 copy.jpg]
>
> "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
>
>
>
>
>
>
>
> ___
> List sponsored by Home Power magazine
>
> List Address: RE-wrenches@lists.re-wrenches.org
>
> Change email address & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
> List-Archive:
> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>
> List rules & etiquette:
> www.re-wrenches.org/etiquette.htm
>
> Check out participant bios:
> www.members.re-wrenches.org
>
>
>
<>___
List sponsored by Home Power magazine

List Address: RE-wrenches@lists.re-wrenches.org

Change email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org

List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org

List rules & etiquette:
www.re-wrenches.org/etiquette.htm

Check out participant bios:
www.members.re-wrenches.org

Re: [RE-wrenches] Thermal imaging

[Jeff Irish]

Andrew,

Have a look at the Fluke VT02.  The screen is small, but it is designed for 
electrical troubleshooting, has a nice IR/visual mix feature, image capture, 
and is less than $1,000.

Jeff Irish
Hudson Solar

From: re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Andrew Truitt
Sent: Tuesday, June 11, 2013 6:55 PM
To: RE-wrenches
Subject: [RE-wrenches] Thermal imaging

Wrenches - I am considering the purchase of a thermal imaging camera for PV 
system commissioning applications.  Prices seem to range from $1,000 to 
$10,000+.  Primary manufacturers seem to be Fluke and Flir, with Extech, Ideal 
and Milwaukee offering a few products as well.  It seems to me that the key 
factors to consider are temperature range, thermal sensitivity, screen 
resolution, screen size, battery life, type of image capture and price.  Does 
anyone have experience with using thermal imaging to identify temperature 
irregularities in modules and/or electrical equipment?  What temperature range, 
thermal sensitivity, and screen resolution is needed for both/either of these 
tasks?  What have been the key factors/specifications in terms of ergonomics 
and functionality?  Any preferences in terms of manufacturer?


For a brighter energy future,


Andrew Truitt
NABCEP Certified PV Installation Professional(tm) (ID# 032407-66)
Principal
Truitt Renewable Energy Consulting, LLC
(202) 486-7507
LinkedIn Profile<http://www.linkedin.com/pub/andrew-truitt/8/622/713>
Company Website<http://truittreconsulting.weebly.com/>

[24 copy.jpg]

"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






--
This message has been scanned for viruses and
dangerous content by Hudson Valley Computer 
Services<http://www.hvcomputerservices.com/>, and is
believed to be clean.
<>___
List sponsored by Home Power magazine

List Address: RE-wrenches@lists.re-wrenches.org

Change email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org

List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org

List rules & etiquette:
www.re-wrenches.org/etiquette.htm

Check out participant bios:
www.members.re-wrenches.org

[RE-wrenches] Thermal imaging

[Andrew Truitt]

Wrenches - I am considering the purchase of a thermal imaging camera for PV
system commissioning applications.  Prices seem to range from $1,000 to
$10,000+.  Primary manufacturers seem to be Fluke and Flir, with Extech,
Ideal and Milwaukee offering a few products as well.  It seems to me that
the key factors to consider are temperature range, thermal sensitivity,
screen resolution, screen size, battery life, type of image capture and
price.  Does anyone have experience with using thermal imaging to identify
temperature irregularities in modules and/or electrical equipment?  What
temperature range, thermal sensitivity, and screen resolution is needed for
both/either of these tasks?  What have been the key factors/specifications
in terms of ergonomics and functionality?  Any preferences in terms of
manufacturer?



For a brighter energy future,


Andrew Truitt
NABCEP Certified PV Installation Professional™ (ID# 032407-66)

Principal
Truitt Renewable Energy Consulting, LLC

(202) 486-7507

LinkedIn Profile 

Company Website 
 <%28202%29%20486-7507>


[image: 24 copy.jpg]

"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
<>___
List sponsored by Home Power magazine

List Address: RE-wrenches@lists.re-wrenches.org

Change email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org

List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org

List rules & etiquette:
www.re-wrenches.org/etiquette.htm

Check out participant bios:
www.members.re-wrenches.org

Re: [RE-wrenches] thermal imaging stud sensors

[Darryl Thayer]

Bosch and Milwalkee Tool have them, I have seen them advertized and 
demonstrated on a mock roof, They work reliably with one layer of asphalt 
shingles, not with two. The cheap ones do not work.  these are ultra sound I 
think.  
Darryl

--- On Mon, 8/30/10, Gary Easton  wrote:

> From: Gary Easton 
> Subject: [RE-wrenches] thermal imaging stud sensors
> To: "RE-wrenches" 
> Date: Monday, August 30, 2010, 8:22 AM
> Anyone have experience with a thermal
> imaging stud sensor or any other
> sensor that will work through roofs?
> Gary Easton
> Appalachian Renewable Power Systems
> NABCEP Certified Solar PV
> NABCEP Certified Solar Thermal
> 740-277-8498
> 
> > Drake,
> >
> > Chris Freitas wrote an article on this topic in SP1.1,
> ³Form 12S Metering
> > for Grid-Tied Systems w/ Battery Backup.² Here¹s a
> link to the article and
> > a
> > wiring diagram:
> >
> >
> > http://solarprofessional.com/article/?file=SP1_1_pg16_QandA_3&search=
> >
> > David Brearley, Senior Technical Editor
> > SolarPro magazine
> >
> > On 8/10/10 7:57 AM, "Drake Chamberlin"
> > 
> wrote:
> >
> >> Hi Alex,
> >>
> >> The one meter hook up always seems confusing to
> me.  I'm still confused.
> >>  Do
> >> we have the AC IN at both the bottom left and top
> right?   To me it
> >> seems that
> >> the AC OUT from the inverter would go to the upper
> left and the
> >> protected
> >> loads panel would be fed from the bottom left.
> >>
> >> I've never used this method, but would like to use
> it instead of the two
> >> meter
> >> method.
> >>
> >> Thanks,
> >>
> >> Drake
> >>
> >>
> >> At 12:19 AM 8/10/2010, you wrote:
> >>> When metering for production here in
> Washington State, we use both
> >>> sides in a
> >>> 12s 120volt meterbase with fifth jaw. 
> top right inverter ac in, bottom
> >>> right
> >>> ac from grid.  top left from battery back
> up, bottom left from inverter
> >>> ac
> >>> in, fifth jaw neutral.
> >>>
> >>> this set up allows grid tied selling and
> battery saved energy selling
> >>> to be
> >>> metered while subtracting energy used to
> charge batteries and
> >>> subtracting any
> >>> power needed to run the inverter.
> >>>
> >>> hope this helps.
> >>>
> >>> contact me off list if you need the diagram
> (in office)
> >>>
> >>>
> >
> >
> > ___
> > List sponsored by Home Power magazine
> >
> > List Address: RE-wrenches@lists.re-wrenches.org
> >
> > Options & settings:
> > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
> >
> > List-Archive:
> > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
> >
> > List rules & etiquette:
> > www.re-wrenches.org/etiquette.htm
> >
> > Check out participant bios:
> > www.members.re-wrenches.org
> >
> >
> 
> 
> ___
> List sponsored by Home Power magazine
> 
> List Address: RE-wrenches@lists.re-wrenches.org
> 
> Options & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
> 
> List-Archive: 
> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
> 
> List rules & etiquette:
> www.re-wrenches.org/etiquette.htm
> 
> Check out participant bios:
> www.members.re-wrenches.org
> 
> 


  
___
List sponsored by Home Power magazine

List Address: RE-wrenches@lists.re-wrenches.org

Options & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org

List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org

List rules & etiquette:
www.re-wrenches.org/etiquette.htm

Check out participant bios:
www.members.re-wrenches.org

[RE-wrenches] thermal imaging stud sensors

[Gary Easton]

Anyone have experience with a thermal imaging stud sensor or any other
sensor that will work through roofs?
Gary Easton
Appalachian Renewable Power Systems
NABCEP Certified Solar PV
NABCEP Certified Solar Thermal
740-277-8498

> Drake,
>
> Chris Freitas wrote an article on this topic in SP1.1, ³Form 12S Metering
> for Grid-Tied Systems w/ Battery Backup.² Here¹s a link to the article and
> a
> wiring diagram:
>
>
> http://solarprofessional.com/article/?file=SP1_1_pg16_QandA_3&search=
>
> David Brearley, Senior Technical Editor
> SolarPro magazine
>
> On 8/10/10 7:57 AM, "Drake Chamberlin"
>  wrote:
>
>> Hi Alex,
>>
>> The one meter hook up always seems confusing to me.  I'm still confused.
>>  Do
>> we have the AC IN at both the bottom left and top right?   To me it
>> seems that
>> the AC OUT from the inverter would go to the upper left and the
>> protected
>> loads panel would be fed from the bottom left.
>>
>> I've never used this method, but would like to use it instead of the two
>> meter
>> method.
>>
>> Thanks,
>>
>> Drake
>>
>>
>> At 12:19 AM 8/10/2010, you wrote:
>>> When metering for production here in Washington State, we use both
>>> sides in a
>>> 12s 120volt meterbase with fifth jaw.  top right inverter ac in, bottom
>>> right
>>> ac from grid.  top left from battery back up, bottom left from inverter
>>> ac
>>> in, fifth jaw neutral.
>>>
>>> this set up allows grid tied selling and battery saved energy selling
>>> to be
>>> metered while subtracting energy used to charge batteries and
>>> subtracting any
>>> power needed to run the inverter.
>>>
>>> hope this helps.
>>>
>>> contact me off list if you need the diagram (in office)
>>>
>>>
>
>
> ___
> List sponsored by Home Power magazine
>
> List Address: RE-wrenches@lists.re-wrenches.org
>
> Options & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
> List-Archive:
> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>
> List rules & etiquette:
> www.re-wrenches.org/etiquette.htm
>
> Check out participant bios:
> www.members.re-wrenches.org
>
>


___
List sponsored by Home Power magazine

List Address: RE-wrenches@lists.re-wrenches.org

Options & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org

List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org

List rules & etiquette:
www.re-wrenches.org/etiquette.htm

Check out participant bios:
www.members.re-wrenches.org