Re: [RE-wrenches] Enphase M210

2012-09-26 Thread William Dorsett 
Jason, If the pictures of the E18 & 19 are accurate, and from my
conversations with the different suppliers that include SolarBridge
inverters, several of these use the original Pantheon I instead of the
updated Pantheon II model. Apparently there are differences in the locking
clip in the module connectors and perhaps some problems with inverter data
speed between the models. I think SolarBridge looks promising and one of the
great advantages of micros is the fine resolution troubleshooting. In
locating Enphase under an array, it makes sense to locate as many under as
few modules as possible in the event of call backs..so you don't have to
flip the card in the middle of the deck. With AC modules, the inverters is
going to be evenly distributed under the whole array. So you are way more
likely to be crawling out there to the middle.

 

Bill Dorsett

Sunwrights

Manhattan, KS

 

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of David
Brearley
Sent: Wednesday, September 26, 2012 6:16 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Enphase M210

 

Jason,

 

You might also check out SunPower's ac modules:

 

http://us.sunpowercorp.com/homes/products-services/solar-panels/AC-home-sola
r-panel/

 

 

 

 

On Sep 26, 2012, at 5:49 PM, Sequoya Cross wrote:





I haven't seen a full compatibility list on the new SMA-240US. At this point
technical downloads aren't available and the data that is present on the
website is still preliminary.

I do have a contact who is beta-testing the units and will see if he has any
more information or wants to comment.

 

Thanks-

 

Sequoya Cross
Backwoods Solar




 

 

 

 

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jason
Szumlanski
Sent: Tuesday, September 25, 2012 4:50 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] Enphase M210

 

Uh oh I guess that means no more SunPower E18/230 with Enphase. That
sucks - it was a good premium product offering for us. Anyone know if the
SMA or other microinverters are compatible with SunPower?

Jason Szumlanski

Fafco Solar

 

On Mon, Sep 24, 2012 at 6:51 PM, Marco Mangelsdorf 
wrote:

Uh oh..I just learned that our Enphase friends are no longer making the
M210s.

 

I need (50) of 'em @ 240V.

 

Anyone have any leads on that many, please?  Please contact me off-list.

 

Thanks,

marco

 


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Re: [RE-wrenches] Enphase M210

2012-09-26 Thread David Brearley 
Jason,

You might also check out SunPower's ac modules:

http://us.sunpowercorp.com/homes/products-services/solar-panels/AC-home-solar-panel/




On Sep 26, 2012, at 5:49 PM, Sequoya Cross wrote:

> I haven’t seen a full compatibility list on the new SMA-240US. At this point 
> technical downloads aren’t available and the data that is present on the 
> website is still preliminary.
> 
> I do have a contact who is beta-testing the units and will see if he has any 
> more information or wants to comment.
>  
> Thanks-
>  
> Sequoya Cross
> Backwoods Solar
> 
>  
> 
>  
> 
>  
>  
> From: re-wrenches-boun...@lists.re-wrenches.org 
> [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jason 
> Szumlanski
> Sent: Tuesday, September 25, 2012 4:50 AM
> To: RE-wrenches
> Subject: Re: [RE-wrenches] Enphase M210
>  
> Uh oh I guess that means no more SunPower E18/230 with Enphase. That 
> sucks - it was a good premium product offering for us. Anyone know if the SMA 
> or other microinverters are compatible with SunPower?
> 
> Jason Szumlanski
> Fafco Solar
>  
> On Mon, Sep 24, 2012 at 6:51 PM, Marco Mangelsdorf  
> wrote:
> Uh oh….I just learned that our Enphase friends are no longer making the M210s.
>  
> I need (50) of ‘em @ 240V.
>  
> Anyone have any leads on that many, please?  Please contact me off-list.
>  
> Thanks,
> marco
>  
> 
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[RE-wrenches] Enphase M210

2012-09-26 Thread Marco Mangelsdorf 
The Power-One 250 and 300 watt micros, when they start shipping them, will
do the trick with the SPR 200 series mods.

 

marco

 

I haven't seen a full compatibility list on the new SMA-240US. At this point
technical downloads aren't available and the data that is present on the
website is still preliminary.

I do have a contact who is beta-testing the units and will see if he has any
more information or wants to comment.

 

Thanks-

 

Sequoya Cross
Backwoods Solar

 

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jason
Szumlanski
Sent: Tuesday, September 25, 2012 4:50 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] Enphase M210

 

Uh oh I guess that means no more SunPower E18/230 with Enphase. That
sucks - it was a good premium product offering for us. Anyone know if the
SMA or other microinverters are compatible with SunPower?

Jason Szumlanski

Fafco Solar 

 

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Re: [RE-wrenches] Enphase M210

2012-09-26 Thread Sequoya Cross 
I haven't seen a full compatibility list on the new SMA-240US. At this point
technical downloads aren't available and the data that is present on the
website is still preliminary.

I do have a contact who is beta-testing the units and will see if he has any
more information or wants to comment.

 

Thanks-

 

Sequoya Cross
Backwoods Solar



 

 

 

 

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jason
Szumlanski
Sent: Tuesday, September 25, 2012 4:50 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] Enphase M210

 

Uh oh I guess that means no more SunPower E18/230 with Enphase. That
sucks - it was a good premium product offering for us. Anyone know if the
SMA or other microinverters are compatible with SunPower?

Jason Szumlanski

Fafco Solar

 

On Mon, Sep 24, 2012 at 6:51 PM, Marco Mangelsdorf 
wrote:

Uh oh..I just learned that our Enphase friends are no longer making the
M210s.

 

I need (50) of 'em @ 240V.

 

Anyone have any leads on that many, please?  Please contact me off-list.

 

Thanks,

marco

 


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Re: [RE-wrenches] parallel OCPD

2012-09-26 Thread Chris Mason 
I believe that current flow through two parallel conductors
is inherently balanced by ohms law. I think the reason the NEC
prohibits parallel cables below 1/0 is to stop contractors taking
shortcuts, using two conductors just because it was what they had.
electrically it works fine. At some point you have to be able to use two or
more conductors.

On Wed, Sep 26, 2012 at 9:16 AM, mac Lewis  wrote:

> Good points.  I would think a more dangerous situation would be the case
> that you often have with large parallel feeders landing on a single OCPD.
>  If one wire has a little less resistance, it will always run hotter than
> the other, and you could easily overheat a wire that is protected by that
> large OCPD.
> Thanks
>
> On Wed, Sep 26, 2012 at 6:48 AM, Jeff Irish  wrote:
>
>>  Code issues aside, even two seemingly identical runs each with breakers
>> would have at least slightly different resistances, causing the lower
>> resistance run to take more than half the total current, tripping the
>> breaker in that run, then causing a tripping of the breaker in the other
>> run.
>>
>> ** **
>>
>> Jeff Irish
>>
>> ** **
>>
>> *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
>> re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *mac Lewis
>> *Sent:* Tuesday, September 25, 2012 9:16 PM
>> *To:* RE-wrenches
>> *Subject:* [RE-wrenches] parallel OCPD
>>
>> ** **
>>
>> Hello wrenches,
>>
>> ** **
>>
>> Does anyone understand why you are not allowed to have
>> parallel separately protected runs of wire.
>>
>> For example, say I need 120A from point A to point B, why doesn't the
>> code allow two runs of #6 breakered at 60A each.  Its probably obvious, but
>> not to me...
>>
>>
>> 
>>
>> ** **
>>
>> -- 
>>
>> ** **
>>
>> ** **
>>
>> ** **
>>
>> Mac Lewis**
>>
>> "Yo solo sé que no sé nada." *-Sócrates***
>>
>> ** **
>>
>>
>> --
>> This message has been scanned for viruses and
>> dangerous content by *Hudson Valley Computer 
>> Services*,
>> and is
>> believed to be clean. 
>>
>> ___
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>>
>>
>
>
> --
>
>
>
> Mac Lewis
>
> *
>
> "Yo solo sé que no sé nada." -Sócrates
> *
>
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>


-- 
Chris Mason
President, Comet Systems Ltd
www.cometenergysystems.com
Cell: 264.235.5670
Skype: netconcepts
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Re: [RE-wrenches] Ni-Fe batteries

2012-09-26 Thread bob ellison 
I have a bunch of them but have never had enough solar to even think about
hooking them up. Efficiency is a problem as is the unusual voltage they run
at, It just seems strange running an odd number of cells. 

The Classic will handle it well but I am getting to the point where I want
things to go as smoothly as possible, after 20+ years experimenting is
getting tiring.

 

Have a great day,

Bob Ellison

 

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: Wednesday, September 26, 2012 7:58 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] Ni-Fe batteries

 

Forever? Well, at least Edison thought they should last 100 years. As
mentioned by others, inefficiency is an impairing factor in an RE system.
However, due to the all time low cost for PV solar modules, these batteries
can actually be a viable option. If you have the space for 40% more PV power
and you have a customer willing to keep the batteries filled, the Ni-Fe
battery could be the last battery they will ever buy. Imagine the grand-kids
inheriting the battery bank.

 

Of course, there are many other details for you to study and understand
before diving in; don't compare these to lead acid. I have about 25 that of
these that are many years old that I bought for experimenting. I have also
read about an 85 year old bank that was made useable again by Peter DeMar.


Larry Crutcher

Starlight Solar Power Systems

 





 

On Sep 25, 2012, at 11:19 AM, Jonathan Hill wrote:

 

Anyone know anything about Nickel-Iron Batteries? We sold some many years
ago but our supplier stopped carrying them. I have a client with a fairly
large bank of Hawker industrial batteries; 2100ah @ 48v. He is asking about
replacing them with Ni-Fe as he has heard that they will last virtually
forever, or at least longer than he might. Any thoughts on this? Also, any
suggestions of good suppliers? Thanks.

Jonathan Hill, senior system engineer and founder 

Sierra Solar Systems

563C Idaho Maryland Road

Grass Valley, CA 95945

Celebrating our 32nd year in solar!

tech info and foreign orders:  (530) 273-6754 

order line: (888) ON-SOLAR (US only)   FAX:  (530) 273-1760

e-mail:  

world wide web:   >

 

 

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Re: [RE-wrenches] parallel OCPD

2012-09-26 Thread Richard L Ratico 
The code provisions regarding conductors in parallel [2011, 310(H)(I)] are very
specific and make complete sense. When installed correctly, in larger sizes, 1/0
or greater, as permitted, there is very little likelihood of significant
difference in resistance or any other problem. This is done safely and routinely
every day all over the US and probably the world. In larger sizes there are
substantial practical and economic advantages to using parallel conducors. In
smaller sizes these advantages don't apply. The explanatory text in the Code
Handbook explains this more completely than I can here.

Dick Ratico
Solarwind Electric

--- You wrote:
Good points.  I would think a more dangerous situation would be the case
that you often have with large parallel feeders landing on a single OCPD.
 If one wire has a little less resistance, it will always run hotter than
the other, and you could easily overheat a wire that is protected by that
large OCPD.
Thanks

On Wed, Sep 26, 2012 at 6:48 AM, Jeff Irish  wrote:

>  Code issues aside, even two seemingly identical runs each with breakers
> would have at least slightly different resistances, causing the lower
> resistance run to take more than half the total current, tripping the
> breaker in that run, then causing a tripping of the breaker in the other
> run.
>
> ** **
>
> Jeff Irish
>
> ** **
>
> *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
> re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *mac Lewis
> *Sent:* Tuesday, September 25, 2012 9:16 PM
> *To:* RE-wrenches
> *Subject:* [RE-wrenches] parallel OCPD
>
> ** **
>
> Hello wrenches,
>
> ** **
>
> Does anyone understand why you are not allowed to have parallel separately
> protected runs of wire.
>
> For example, say I need 120A from point A to point B, why doesn't the code
> allow two runs of #6 breakered at 60A each.  Its probably obvious, but not
> to me...
--- end of quote ---
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Re: [RE-wrenches] Insulation tester

2012-09-26 Thread Stephen Kane 
Mac,

 


I have had good experience with the Fluke 1587 (Hybrid Insulation Tester and
Multimeter). Usually retails for under $750. 


http://www.fluke.com/fluke/usen/Insulation-Testers/Fluke-1587-1577.htm?PID=5
6012


 


 

 

Stephen Kane

Kane Solar

Lyons, CO

720.365.3994 (cell)

 

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of mac Lewis
Sent: Wednesday, September 26, 2012 7:09 AM
To: RE-wrenches
Subject: [RE-wrenches] Insulation tester

 

Wrenches,

 

I am looking for a good reliable insulation tester at a good price.  Does
anyone have a model they like?  Is there any reason to get one that can do
above 1 kV for residential and small commercial PV systems?

 

Thanks in advance


 

-- 

 

 

 

Mac Lewis

"Yo solo sé que no sé nada." -Sócrates

 

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Re: [RE-wrenches] Ni-Fe batteries

2012-09-26 Thread Roy Butler 

  
  
I have 5,000 pounds of original Edison
  NiFe batteries, made between 1928 and 1939.
  Almost all of them are working at close to 90% of their original
  capacity.
  
  I would be willing to bet that Edison was really close with his
  100 year estimate.on his batteries.
  I would not want to make that same claim with batteries from other
  sources.
  
  BUT..they really are inefficient. And they really are
  difficult to charge with modern battery chargers.
  The cases are conductive and need to be insulated from each other
  and anything around them.
  
  And voltage is the only way to determine state of charge, as the
  electrolyte specific gravity does not
  change throughout the charging cycle.
  
  I like them but definitely agree with Danthey are not for the
  general public!
  
  Roy Butler
NABCEP Certified Small Wind Installer®
NABCEP Certified Solar PV Installer®
NYSERDA eligible PV & wind installer
Four Winds Renewable Energy, LLC
8902 Route 46, Arkport, NY 14807
607-324-9747  www.four-winds-energy.com

Join us at the 9th Annual Small Wind Conference
A Gathering of Installers, Manufacturers, Dealers, & Distributors
June 18 and 19, 2013 in Stevens Point, Wisconsin
www.smallwindconference.com

Although no trees were killed in the sending of this message, 
a large number of electrons were terribly inconvenienced.



  On 9/26/2012 7:58 AM, Larry Crutcher, Starlight Solar Power
  Systems wrote:

Forever? Well, at least Edison thought they should
  last 100 years. As mentioned by others, inefficiency is an
  impairing factor in an RE system. However, due to the all time low
  cost for PV solar modules, these batteries can actually be a
  viable option. If you have the space for 40% more PV power and you
  have a customer willing to keep the batteries filled, the Ni-Fe
  battery could be the last battery they will ever buy. Imagine the
  grand-kids inheriting the battery bank.
  
  
  Of course, there are many other details for you to study and
understand before diving in; don't compare these to lead acid. I
have about 25 that of these that are many years old that I
bought for experimenting. I have also read about an 85 year old
bank that was made useable again by Peter DeMar.

  

  
  
  

  
Larry Crutcher
  Starlight Solar Power Systems

  


  


  


  

  


  


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Re: [RE-wrenches] parallel OCPD

2012-09-26 Thread mac Lewis 
Good points.  I would think a more dangerous situation would be the case
that you often have with large parallel feeders landing on a single OCPD.
 If one wire has a little less resistance, it will always run hotter than
the other, and you could easily overheat a wire that is protected by that
large OCPD.
Thanks

On Wed, Sep 26, 2012 at 6:48 AM, Jeff Irish  wrote:

>  Code issues aside, even two seemingly identical runs each with breakers
> would have at least slightly different resistances, causing the lower
> resistance run to take more than half the total current, tripping the
> breaker in that run, then causing a tripping of the breaker in the other
> run.
>
> ** **
>
> Jeff Irish
>
> ** **
>
> *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
> re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *mac Lewis
> *Sent:* Tuesday, September 25, 2012 9:16 PM
> *To:* RE-wrenches
> *Subject:* [RE-wrenches] parallel OCPD
>
> ** **
>
> Hello wrenches,
>
> ** **
>
> Does anyone understand why you are not allowed to have parallel separately
> protected runs of wire.
>
> For example, say I need 120A from point A to point B, why doesn't the code
> allow two runs of #6 breakered at 60A each.  Its probably obvious, but not
> to me...
>
>
> 
>
> ** **
>
> -- 
>
> ** **
>
> ** **
>
> ** **
>
> Mac Lewis**
>
> "Yo solo sé que no sé nada." *-Sócrates***
>
> ** **
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Mac Lewis

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[RE-wrenches] Insulation tester

2012-09-26 Thread mac Lewis 
Wrenches,

I am looking for a good reliable insulation tester at a good price.  Does
anyone have a model they like?  Is there any reason to get one that can do
above 1 kV for residential and small commercial PV systems?

Thanks in advance

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Mac Lewis

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"Yo solo sé que no sé nada." -Sócrates
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Re: [RE-wrenches] parallel OCPD

2012-09-26 Thread Jeff Irish 
Code issues aside, even two seemingly identical runs each with breakers would 
have at least slightly different resistances, causing the lower resistance run 
to take more than half the total current, tripping the breaker in that run, 
then causing a tripping of the breaker in the other run.

Jeff Irish

From: re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of mac Lewis
Sent: Tuesday, September 25, 2012 9:16 PM
To: RE-wrenches
Subject: [RE-wrenches] parallel OCPD

Hello wrenches,

Does anyone understand why you are not allowed to have parallel separately 
protected runs of wire.
For example, say I need 120A from point A to point B, why doesn't the code 
allow two runs of #6 breakered at 60A each.  Its probably obvious, but not to 
me...


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Mac Lewis

"Yo solo sé que no sé nada." -Sócrates


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Re: [RE-wrenches] Ni-Fe batteries

2012-09-26 Thread Larry Crutcher, Starlight Solar Power Systems 
Forever? Well, at least Edison thought they should last 100 years. As mentioned 
by others, inefficiency is an impairing factor in an RE system. However, due to 
the all time low cost for PV solar modules, these batteries can actually be a 
viable option. If you have the space for 40% more PV power and you have a 
customer willing to keep the batteries filled, the Ni-Fe battery could be the 
last battery they will ever buy. Imagine the grand-kids inheriting the battery 
bank.

Of course, there are many other details for you to study and understand before 
diving in; don't compare these to lead acid. I have about 25 that of these that 
are many years old that I bought for experimenting. I have also read about an 
85 year old bank that was made useable again by Peter DeMar.

Larry Crutcher
Starlight Solar Power Systems




On Sep 25, 2012, at 11:19 AM, Jonathan Hill wrote:


Anyone know anything about Nickel-Iron Batteries? We sold some many years ago 
but our supplier stopped carrying them. I have a client with a fairly large 
bank of Hawker industrial batteries; 2100ah @ 48v. He is asking about replacing 
them with Ni-Fe as he has heard that they will last virtually forever, or at 
least longer than he might. Any thoughts on this? Also, any suggestions of good 
suppliers? Thanks.
Jonathan Hill, senior system engineer and founder
Sierra Solar Systems
563C Idaho Maryland Road
Grass Valley, CA 95945
Celebrating our 32nd year in solar!
tech info and foreign orders:  (530) 273-6754
order line: (888) ON-SOLAR (US only)   FAX:  (530) 273-1760
e-mail:  
world wide web:  



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