date:20130412

Re: [RE-wrenches] Advanced PV Training Recommendations

2013-04-12 Thread Jesse Dahl

The MREA (Midwest renewable energy association) offers classes, some on-line 
now. Really good Instructors. 

www.midwestrenew.org

Jesse

Sent from my iPhone

On Apr 12, 2013, at 8:03 PM, jay peltz  wrote:

> HI Eric,
> 
> I'm going to advise you to look at SEI
> Solar energy international.
> 
> http://www.solarenergy.org/
> 
> Full disclosure, I teach part time from them.
> 
> Cheers,
> 
> jay
> 
> peltz power
> 
> On Apr 12, 2013, at 12:46 PM, SunHarvest wrote:
> 
>> Wrenchers -
>>  
>> I am in need of hands-on advanced training for my own continuing education. 
>> I have a California C46 solar contractor's license and plenty of experience 
>> designing and installing systems. But, as you all know, there are always 
>> more details to master, code issues to be clarified, and new technologies 
>> coming down the pike. I'd like to focus on off-grid and on-grid w/BB systems 
>> over straight grid-tie.
>>  
>> I'm looking at Solar Living Institute as that's here in NorCal, where I live.
>>  
>> Are there any training schools/programs that you guys would recommend?
>>  
>> My main requirements are that the instructor has 20+ years of hands-on 
>> experience and that the training is hands-on and fully comprehensive. I am 
>> interested in getting NABCEP certified but I'm more concerned with getting 
>> professional, in-depth training than with qualifying for NABCEP exam 
>> requirements.
>>  
>> Thanks!
>>  
>> Eric
>> SunHarvest
>>  
>>  
>> - Original Message -
>> From: John Berdner
>> To: RE-wrenches
>> Sent: Thursday, April 04, 2013 11:44 AM
>> Subject: Re: [RE-wrenches] Combining conductors
>> 
>> Larry:
>>  
>> Yes, you can parallel conductors (there is an NEC limit on minimum size 
>> allowed to parallel).
>> You just add the ampacity of the two conductors.
>> To convince yourself you can also check Table 8 Conductor Properties and sum 
>> the cross sectional areas of all the parallel conductors to see the 
>> equivalency to a single larger conductor.
>>  
>> Best Regards,
>>  
>> John Berdner
>> General Manager, North America
>>  
>> SolarEdge Technologies, Inc.
>> 3347 Gateway Boulevard, Fremont CA 94538 USA  (*Please note of our new 
>> address.)
>> T: 510.498.3200, X 747
>> M: 530.277.4894
>>  
>> From: re-wrenches-boun...@lists.re-wrenches.org 
>> [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Larry 
>> Crutcher, Starlight Solar Power Systems
>> Sent: Thursday, April 04, 2013 9:51 AM
>> To: RE-wrenches
>> Subject: [RE-wrenches] Combining conductors
>>  
>> Wrenches,
>>  
>> Here's a tough one for me to understand. I am installing 2 volt AGM 
>> batteries. There are two terminals for each battery polarity. I have some 
>> height limits so I need to use the minimum wire size. Here's my question: If 
>> I combine two identical conductors, what is the equivalent single conductor 
>> size? 
>>  
>> I found one "rule of thumb" that says doubling like conductors creates a AWG 
>> decrease of 3. Example: two #2 will be equivalent to 2/0. Is this true?
>> 
>> Thank you,
>> 
>> Larry Crutcher
>> Starlight Solar Power Systems
>>  
>>  
>> 
>> 
>> 
>>  
>> CONFIDENTIALITY NOTICE: This e-mail and its attachments are intended only 
>> for the use of the individual or entity who is the intended recipient and 
>> may contain information that is privileged, confidential and exempt from 
>> disclosure or any type of use under applicable law. If the reader of this 
>> e-mail is not the intended recipient, or the employee, agent, or 
>> representative responsible for delivering the e-mail to the intended 
>> recipient, you are hereby notified that any dissemination, distribution, 
>> copying, or other use of this e-mail is strictly prohibited. If you have 
>> received this e-mail in error, please reply immediately to the sender. 
>> P  Please think of the environment before printing this email
>> 
>> 
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Re: [RE-wrenches] Enphase Wire Management

2013-04-12 Thread Aaron Mandelkorn

Thanks to all for the great suggestions.  I see that there is quite a selection 
of products for my application.  Have a great weekend all.

Aaron Mandelkorn
NABCEP Certified PV Installer
Renewable Energy Outfitters
Box 65 Salida, CO. 81201
(970)596-3744
reoso...@gmail.com
www.reosolar.com















On Apr 12, 2013, at 1:02 PM, All Solar wrote:

> Iron ridge has some wire clips that will also fit Unirac rails
> 
> Sent from Jeremy's IPhone.  Sorry for typos and shorthand!
> 
> On Apr 11, 2013, at 6:52 PM, Aaron Mandelkorn  wrote:
> 
>> Just wondering what people like to use for supporting the trunk cable for 
>> the enphase 215 inverters.  WIth zipties going brittle after a couple of 
>> years aluminum or steel options are what I am more interested in.  I have 
>> seen some installs with steel zipties but the sharp edge on them makes me 
>> wonder if there is a chance of them cutting into the cable.   I have used 
>> 3/8" one hole conduit straps on each side of the trunk cable connector and 
>> although this seems quite stout it gets expensive on larger systems.  Any 
>> ideas about products out there for supporting the trunk cable for the life 
>> of the system?
>>  
>> Aaron Mandelkorn
>> NABCEP Certified PV Installer
>> Renewable Energy Outfitters
>> Box 65 Salida, CO. 81201
>> (970)596-3744
>> reoso...@gmail.com
>> www.reosolar.com
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> ___
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Re: [RE-wrenches] Advanced PV Training Recommendations

2013-04-12 Thread jay peltz

HI Eric,

I'm going to advise you to look at SEI
Solar energy international.

http://www.solarenergy.org/

Full disclosure, I teach part time from them.

Cheers,

jay

peltz power

On Apr 12, 2013, at 12:46 PM, SunHarvest wrote:

> Wrenchers -
>  
> I am in need of hands-on advanced training for my own continuing education. I 
> have a California C46 solar contractor's license and plenty of experience 
> designing and installing systems. But, as you all know, there are always more 
> details to master, code issues to be clarified, and new technologies coming 
> down the pike. I'd like to focus on off-grid and on-grid w/BB systems over 
> straight grid-tie.
>  
> I'm looking at Solar Living Institute as that's here in NorCal, where I live.
>  
> Are there any training schools/programs that you guys would recommend?
>  
> My main requirements are that the instructor has 20+ years of hands-on 
> experience and that the training is hands-on and fully comprehensive. I am 
> interested in getting NABCEP certified but I'm more concerned with getting 
> professional, in-depth training than with qualifying for NABCEP exam 
> requirements.
>  
> Thanks!
>  
> Eric
> SunHarvest
>  
>  
> - Original Message -
> From: John Berdner
> To: RE-wrenches
> Sent: Thursday, April 04, 2013 11:44 AM
> Subject: Re: [RE-wrenches] Combining conductors
> 
> Larry:
>  
> Yes, you can parallel conductors (there is an NEC limit on minimum size 
> allowed to parallel).
> You just add the ampacity of the two conductors.
> To convince yourself you can also check Table 8 Conductor Properties and sum 
> the cross sectional areas of all the parallel conductors to see the 
> equivalency to a single larger conductor.
>  
> Best Regards,
>  
> John Berdner
> General Manager, North America
>  
> SolarEdge Technologies, Inc.
> 3347 Gateway Boulevard, Fremont CA 94538 USA  (*Please note of our new 
> address.)
> T: 510.498.3200, X 747
> M: 530.277.4894
>  
> From: re-wrenches-boun...@lists.re-wrenches.org 
> [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Larry 
> Crutcher, Starlight Solar Power Systems
> Sent: Thursday, April 04, 2013 9:51 AM
> To: RE-wrenches
> Subject: [RE-wrenches] Combining conductors
>  
> Wrenches,
>  
> Here's a tough one for me to understand. I am installing 2 volt AGM 
> batteries. There are two terminals for each battery polarity. I have some 
> height limits so I need to use the minimum wire size. Here's my question: If 
> I combine two identical conductors, what is the equivalent single conductor 
> size? 
>  
> I found one "rule of thumb" that says doubling like conductors creates a AWG 
> decrease of 3. Example: two #2 will be equivalent to 2/0. Is this true?
> 
> Thank you,
> 
> Larry Crutcher
> Starlight Solar Power Systems
>  
>  
> 
> 
> 
>  
> CONFIDENTIALITY NOTICE: This e-mail and its attachments are intended only for 
> the use of the individual or entity who is the intended recipient and may 
> contain information that is privileged, confidential and exempt from 
> disclosure or any type of use under applicable law. If the reader of this 
> e-mail is not the intended recipient, or the employee, agent, or 
> representative responsible for delivering the e-mail to the intended 
> recipient, you are hereby notified that any dissemination, distribution, 
> copying, or other use of this e-mail is strictly prohibited. If you have 
> received this e-mail in error, please reply immediately to the sender. 
> P  Please think of the environment before printing this email
> 
> 
> ___
> List sponsored by Home Power magazine
> 
> List Address: RE-wrenches@lists.re-wrenches.org
> 
> Change email address & settings:
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Re: [RE-wrenches] Fuse sizing in battery circuits

2013-04-12 Thread Drake

Are AC coupled systems with no DC loads exempted 
from the grounding rules of DC coupled, battery 
based systems and the rules of DC grounding?





This is from the Sunny Island Manual:
"External grounding of the negative pole of the 
batteries is possible, because the batteries

and the grid side are galvanically isolated within the Sunny Island.
 Dimenssion the crossâsection of the 
protective conductor sufficiently. Thus you are
ensuring that in the event of a fault the high 
currents occurring can be discharged with

an external grounding.
 If groounding of the negative pole of the 
battery is necessary, assemble this outside of

the Sunny Island.

As far as I am aware, the NEC code is kind of 
vague on grounding battery banks (please correct 
me if I am wrong), it is more of a AHJ requirement.


There is no reference to ground (DC side) inside the SI.

SMA America, LLC
Steve Jefferson
Supervisor, Service Line
6020 West Oaks Blvd, Suite 300
Rocklin, CA 95765 - 3714
U.S.A.
Tel:  +1 916 625 0870
Fax: +1 916 624-2445
Service Line +1 877 697 6283 (Toll Free)
Email: steve.jeffer...@sma-america.com
www.SMA-America.com

This email and any attachments thereto may 
contain SMA America, LLC confidential, 
privileged and private material for the sole use 
of the intended recipient. Any review, copying, 
or distribution of this email (or any 
attachments thereto) by others is strictly 
prohibited. If you are not the intended 
recipient, please contact the sender immediately 
and permanently delete the original and any 
copies of this email and any attachments thereto. Thank you.


From: re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of August Goers

Sent: Wednesday, April 10, 2013 2:13 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Fuse sizing in battery circuits

Steve,

So if we wanted to ground the negative would we 
literally run a ground wire to one of the 
battery terminals? Is there anything in the NEC 
that governs this? What are the deciding factors 
when deciding to ground the negative or not?


As a separate note, I've noticed that the 
negative battery terminals measure 0 volts to 
ground on a Sunny Island setup once everything 
is connected without any extra grounding added. 
I thought that there must be some reference to 
ground happening in the Sunny Island but apparently I'm wrong.


Thanks, August

From: 
re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Steve Jefferson

Sent: Wednesday, April 10, 2013 9:56 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] Fuse sizing in battery circuits

If the Batt negative is not bonded to ground, 
then yes SMA recommends fusing both Positive and Negative.


Also, the negative is not bonded to ground internally in the Sunny Island.

SMA America, LLC
Steve Jefferson
Supervisor, Service Line
6020 West Oaks Blvd, Suite 300
Rocklin, CA 95765 - 3714
U.S.A.
Tel:  +1 916 625 0870
Fax: +1 916 624-2445
Service Line +1 877 697 6283 (Toll Free)
Email: steve.jeffer...@sma-america.com
www.SMA-America.com

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Re: [RE-wrenches] Advanced PV Training Recommendations

2013-04-12 Thread August Goers

Eric,



NABCEP just had an annual continuing education conference in Sacramento
with three days of various hands on classes including a good deal focusing
on battery backup systems. It was initially only open to NABCEP certified
folks but registration was eventually opened up to others. You might want
to consider attending next year if they have it again. I certainly got a
lot out of it.



I also like SMA's Sunny Island classes up in Rocklin CA but I don't know
that the instructors necessarily have 20+ years of hands on experience.
You'd have to check on that.





Best,



August



*From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *SunHarvest
*Sent:* Friday, April 12, 2013 12:47 PM
*To:* RE-wrenches
*Subject:* [RE-wrenches] Advanced PV Training Recommendations



Wrenchers -



I am in need of hands-on advanced training for my own continuing education.
I have a California C46 solar contractor's license and plenty of experience
designing and installing systems. But, as you all know, there are always
more details to master, code issues to be clarified, and new technologies
coming down the pike. I'd like to focus on off-grid and on-grid w/BB
systems over straight grid-tie.



I'm looking at Solar Living Institute as that's here in NorCal, where I
live.



Are there any training schools/programs that you guys would recommend?



My main requirements are that the instructor has 20+ years of hands-on
experience and that the training is hands-on and fully comprehensive. I am
interested in getting NABCEP certified but I'm more concerned with getting
professional, in-depth training than with qualifying for NABCEP exam
requirements.



Thanks!



Eric

SunHarvest





- Original Message -

*From:* John Berdner 

*To:* RE-wrenches 

*Sent:* Thursday, April 04, 2013 11:44 AM

*Subject:* Re: [RE-wrenches] Combining conductors



Larry:



Yes, you can parallel conductors (there is an NEC limit on minimum size
allowed to parallel).

You just add the ampacity of the two conductors.

To convince yourself you can also check Table 8 Conductor Properties and
sum the cross sectional areas of all the parallel conductors to see the
equivalency to a single larger conductor.



Best Regards,



John Berdner

General Manager, North America



SolarEdge Technologies, Inc.

3347 Gateway Boulevard, Fremont CA 94538 USA  *(*Please note of our new
address.)*
T: 510.498.3200, X 747

M: 530.277.4894



*From:* re-wrenches-boun...@lists.re-wrenches.org [
mailto:re-wrenches-boun...@lists.re-wrenches.org]
*On Behalf Of *Larry Crutcher, Starlight Solar Power Systems
*Sent:* Thursday, April 04, 2013 9:51 AM
*To:* RE-wrenches
*Subject:* [RE-wrenches] Combining conductors



Wrenches,



Here's a tough one for me to understand. I am installing 2 volt AGM
batteries. There are two terminals for each battery polarity. I have some
height limits so I need to use the minimum wire size. Here's my question:
If I combine two identical conductors, what is the equivalent single
conductor size?



I found one "rule of thumb" that says doubling like conductors creates a
AWG decrease of 3. Example: two #2 will be equivalent to 2/0. Is this true?


Thank you,


Larry Crutcher

Starlight Solar Power Systems









CONFIDENTIALITY NOTICE: This e-mail and its attachments are intended only
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may contain information that is privileged, confidential and exempt from
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received this e-mail in error, please reply immediately to the sender.

*P*  Please think of the environment before printing this email
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[RE-wrenches] Advanced PV Training Recommendations

2013-04-12 Thread SunHarvest

Wrenchers -

I am in need of hands-on advanced training for my own continuing education. I 
have a California C46 solar contractor's license and plenty of experience 
designing and installing systems. But, as you all know, there are always more 
details to master, code issues to be clarified, and new technologies coming 
down the pike. I'd like to focus on off-grid and on-grid w/BB systems over 
straight grid-tie.

I'm looking at Solar Living Institute as that's here in NorCal, where I live.

Are there any training schools/programs that you guys would recommend? 

My main requirements are that the instructor has 20+ years of hands-on 
experience and that the training is hands-on and fully comprehensive. I am 
interested in getting NABCEP certified but I'm more concerned with getting 
professional, in-depth training than with qualifying for NABCEP exam 
requirements.

Thanks!

Eric
SunHarvest


- Original Message - 
  From: John Berdner 
  To: RE-wrenches 
  Sent: Thursday, April 04, 2013 11:44 AM
  Subject: Re: [RE-wrenches] Combining conductors


  Larry:

   

  Yes, you can parallel conductors (there is an NEC limit on minimum size 
allowed to parallel).

  You just add the ampacity of the two conductors.

  To convince yourself you can also check Table 8 Conductor Properties and sum 
the cross sectional areas of all the parallel conductors to see the equivalency 
to a single larger conductor.

   

  Best Regards,

   

  John Berdner

  General Manager, North America

   

  SolarEdge Technologies, Inc.

  3347 Gateway Boulevard, Fremont CA 94538 USA  (*Please note of our new 
address.)
  T: 510.498.3200, X 747

  M: 530.277.4894 

   

  From: re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Larry Crutcher, 
Starlight Solar Power Systems
  Sent: Thursday, April 04, 2013 9:51 AM
  To: RE-wrenches
  Subject: [RE-wrenches] Combining conductors

   

  Wrenches,

   

  Here's a tough one for me to understand. I am installing 2 volt AGM 
batteries. There are two terminals for each battery polarity. I have some 
height limits so I need to use the minimum wire size. Here's my question: If I 
combine two identical conductors, what is the equivalent single conductor size? 

   

  I found one "rule of thumb" that says doubling like conductors creates a AWG 
decrease of 3. Example: two #2 will be equivalent to 2/0. Is this true?


  Thank you,


  Larry Crutcher

  Starlight Solar Power Systems

   

   






   

  CONFIDENTIALITY NOTICE: This e-mail and its attachments are intended only for 
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or any type of use under applicable law. If the reader of this e-mail is not 
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for delivering the e-mail to the intended recipient, you are hereby notified 
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strictly prohibited. If you have received this e-mail in error, please reply 
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  P  Please think of the environment before printing this email



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Re: [RE-wrenches] Enphase Wire Management

2013-04-12 Thread All Solar

Iron ridge has some wire clips that will also fit Unirac rails

Sent from Jeremy's IPhone.  Sorry for typos and shorthand!

On Apr 11, 2013, at 6:52 PM, Aaron Mandelkorn  wrote:

> Just wondering what people like to use for supporting the trunk cable for the 
> enphase 215 inverters.  WIth zipties going brittle after a couple of years 
> aluminum or steel options are what I am more interested in.  I have seen some 
> installs with steel zipties but the sharp edge on them makes me wonder if 
> there is a chance of them cutting into the cable.   I have used 3/8" one hole 
> conduit straps on each side of the trunk cable connector and although this 
> seems quite stout it gets expensive on larger systems.  Any ideas about 
> products out there for supporting the trunk cable for the life of the system?
>  
> Aaron Mandelkorn
> NABCEP Certified PV Installer
> Renewable Energy Outfitters
> Box 65 Salida, CO. 81201
> (970)596-3744
> reoso...@gmail.com
> www.reosolar.com
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
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Re: [RE-wrenches] Enphase Wire Management

2013-04-12 Thread Jason Szumlanski

Here for reference: http://www.pvracking.us/purchase-online/accessories/

I've never used their WireLoops, but I can see them coming in handy as well.

*Jason *


On Fri, Apr 12, 2013 at 8:45 AM, Jason Szumlanski wrote:

> Rubberized clamps that fit in the rail channel from PV Racking. $75 for
> 300. Buy from manufacturer.
>
>
> *Jason Szumlanski** *
>
> *Fafco Solar* 
> 
>
>
>
> On Thu, Apr 11, 2013 at 8:52 PM, Aaron Mandelkorn wrote:
>
>> Just wondering what people like to use for supporting the trunk cable for
>> the enphase 215 inverters.  WIth zipties going brittle after a couple of
>> years aluminum or steel options are what I am more interested in.  I have
>> seen some installs with steel zipties but the sharp edge on them makes me
>> wonder if there is a chance of them cutting into the cable.   I have used
>> 3/8" one hole conduit straps on each side of the trunk cable connector and
>> although this seems quite stout it gets expensive on larger systems.  Any
>> ideas about products out there for supporting the trunk cable for the life
>> of the system?
>>
>>Aaron Mandelkorn
>> NABCEP Certified PV Installer
>> Renewable Energy Outfitters
>> Box 65 Salida, CO. 81201
>> (970)596-3744
>>  reoso...@gmail.com
>> www.reosolar.com
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
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>> List sponsored by Home Power magazine
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Re: [RE-wrenches] Enphase Wire Management

2013-04-12 Thread Jason Szumlanski

Rubberized clamps that fit in the rail channel from PV Racking. $75 for
300. Buy from manufacturer.


*Jason Szumlanski** *

*Fafco Solar* 




On Thu, Apr 11, 2013 at 8:52 PM, Aaron Mandelkorn wrote:

> Just wondering what people like to use for supporting the trunk cable for
> the enphase 215 inverters.  WIth zipties going brittle after a couple of
> years aluminum or steel options are what I am more interested in.  I have
> seen some installs with steel zipties but the sharp edge on them makes me
> wonder if there is a chance of them cutting into the cable.   I have used
> 3/8" one hole conduit straps on each side of the trunk cable connector and
> although this seems quite stout it gets expensive on larger systems.  Any
> ideas about products out there for supporting the trunk cable for the life
> of the system?
>
>Aaron Mandelkorn
> NABCEP Certified PV Installer
> Renewable Energy Outfitters
> Box 65 Salida, CO. 81201
> (970)596-3744
>  reoso...@gmail.com
> www.reosolar.com
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> ___
> List sponsored by Home Power magazine
>
> List Address: RE-wrenches@lists.re-wrenches.org
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Re: [RE-wrenches] Enphase Wire Management

2013-04-12 Thread Nick Soleil

The Sunbundler is meant to be crimped closed with a crimper or pliers.


On Thu, Apr 11, 2013 at 10:55 PM,  wrote:

> How do you tighten a Heyco Sunbundler?
> Granted it will prevent the cable from falling to the roof but I could not
> tighten them to the point of securing the cable from movement.
> Sent from my Verizon Wireless BlackBerry
>
> -Original Message-
> From: Brian Mehalic 
> Sender: re-wrenches-boun...@lists.re-wrenches.orgDate: Thu, 11 Apr 2013
> 21:26:43
> To: RE-wrenches
> Reply-To: RE-wrenches 
> Subject: Re: [RE-wrenches] Enphase Wire Management
>
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-- 

Cordially,

*Nick Soleil*

*Field Applications Engineer
*

*Enphase Energy*

Mobile: (707) 321-2937


**

*Enphase Commercial Solar.*
*Limitless.*

*
*

1420 North McDowell

Petaluma, CA 94954

www.enphase.com 

P: (707) 763-4784 x7267

F: (707) 763-0784

E: nsol...@enphaseenergy.com

[image: nabcep logo] Certified Solar PV Installer #03262011-300

“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
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