Re: [RE-wrenches] P1 micro performance

[Bill Loesch]

Hi Dan,

A very heartfelt thanks for the education.
It is exactly this kind of attention to detail that separate the 
professional from the practitioner. Moreover, at least in this case, the 
proper terminology is hopefully better and more widely understood.

Thanks again,

Bill Loesch
Solar 1 - Saint Louis Solar
314 631 1094

On 21-Mar-13 11:59 PM, Exeltech wrote:

Wrenches,

I'm probably a lone voice on this .. and not intending to get overly 
picky.


Could we call power limiting what it is .. "limiting", and not "clipping"?

Clipping implies distortion, which isn't the case here. Limiting is 
just that.

The inverter output is limited to some maximum value -- not "clipped".

The output power curve flattens when integrated over time, but this 
still isn't
distortion in the waveform.  It's simply a point in the output where 
the derivative
is zero.  Not increasing, not decreasing.  Just .. zero. No additional 
increase
in the output for an increase in available energy at the input.  Think 
"governor"

on an engine

Thanks.


Dan Lepinski, Sr. Engineer
Exeltech / Exeltech Solar Products


--- On *Thu, 3/21/13, David Brearley 
//* wrote:



From: David Brearley 
Subject: Re: [RE-wrenches] P1 micro performance
To: "RE-wrenches" 
Date: Thursday, March 21, 2013, 11:37 PM

Thanks for sharing the screen capture, Marco.

Interesting issues to think about here. This is actually prime
clipping season in many places (not sure about Hawaii) due to the
cool weather. While there are more sun-hours in the summer, the
cell temperatures are often high enough that you won't tend to see
rated power out of the modules.

While I'm not running performance models for work, the people who
do are routinely increasing dc-to-ac ratios, often as high as
1.4-to-1. Having said that, most inverters aren't installed on a
roof. (Not yet anyway.)

I'd probably lean to a more conservative sizing ratio for micros.
While I can imagine some scenarios where I'd be comfortable with a
215 W micro on a 265 W module—like a flat roof install in Vermont,
which reportedly doesn't see 1,000 W/m^2 very often—I wouldn't try
that here in Texas.




___
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



No virus found in this message.
Checked by AVG - www.avg.com 
Version: 2013.0.2904 / Virus Database: 2641/6187 - Release Date: 03/18/13






-
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.2904 / Virus Database: 2641/6187 - Release Date: 03/18/13___
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] P1 micro performance

[Bill Loesch]

Hi boB,

Kudos to you, too. Flat-topping (bottoming) is so very descriptive and 
hopefully universally understandable. Excellent analogies.
Technical education/expertise sharing is one of the most prized benefits 
of belonging/participating on the RE-wrenches list.

Thanks,

Bill Loesch
Solar 1 - Saint Louis Solar
314 631 1094

On 22-Mar-13 1:07 AM, boB wrote:

On 3/21/2013 9:59 PM, Exeltech wrote:

Wrenches,

I'm probably a lone voice on this .. and not intending to get overly 
picky.





No, two lonely voices, Dan.

I associate clipping with audio waveforms which stops
the negative or positive voltage peaks flat.  Also called
flat-topping.

Limiting is like turning down the volume.  The waveform
stays the same and does not distort as it would if it
were being flat topped (and flat bottomed)

Thanks !
boB






Could we call power limiting what it is .. "limiting", and not 
"clipping"?


Clipping implies distortion, which isn't the case here. Limiting is 
just that.

The inverter output is limited to some maximum value -- not "clipped".

The output power curve flattens when integrated over time, but this 
still isn't
distortion in the waveform.  It's simply a point in the output where 
the derivative
is zero.  Not increasing, not decreasing.  Just .. zero.  No 
additional increase
in the output for an increase in available energy at the input.  
Think "governor"

on an engine

Thanks.


Dan Lepinski, Sr. Engineer
Exeltech / Exeltech Solar Products


--- On *Thu, 3/21/13, David Brearley 
//* wrote:



From: David Brearley 
Subject: Re: [RE-wrenches] P1 micro performance
To: "RE-wrenches" 
Date: Thursday, March 21, 2013, 11:37 PM

Thanks for sharing the screen capture, Marco.

Interesting issues to think about here. This is actually prime
clipping season in many places (not sure about Hawaii) due to the
cool weather. While there are more sun-hours in the summer, the
cell temperatures are often high enough that you won't tend to
see rated power out of the modules.

While I'm not running performance models for work, the people who
do are routinely increasing dc-to-ac ratios, often as high as
1.4-to-1. Having said that, most inverters aren't installed on a
roof. (Not yet anyway.)

I'd probably lean to a more conservative sizing ratio for micros.
While I can imagine some scenarios where I'd be comfortable with
a 215 W micro on a 265 W module---like a flat roof install in
Vermont, which reportedly doesn't see 1,000 W/m^2 very often---I
wouldn't try that here in Texas.








___
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



No virus found in this message.
Checked by AVG - www.avg.com 
Version: 2013.0.2904 / Virus Database: 2641/6187 - Release Date: 03/18/13






-
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.2904 / Virus Database: 2641/6187 - Release Date: 03/18/13___
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] Metal shingles

[Jason Szumlanski]

It depends on the type of metal shingle/tile, of course, but many of them
have a screw where they overlap. We are seeing a lot of the simulated round
tiles that are made of metal, and they can have a screw at the apex near
the overlap, or on the overlap/edge.

*Jason Szumlanski*

*Fafco Solar*



On Thu, Mar 21, 2013 at 6:42 PM, Jesse Dahl  wrote:

> Thanks for the advice. Good points on the warranty of the roofing
> material, never crossed my mind...
>
> I have all the confidence I can cut the roof to flash (3 generation
> carpenter before I became an electrician). What is the process for removing
> a shingle? I'm guessing the shingles interlock where the overlap.
>
> Jesse
>
> Sent from my iPhone
>
> On Mar 21, 2013, at 3:37 PM, Jason Szumlanski 
> wrote:
>
> Tin snips does the trick. I have a guy with 20+ years of roof experience
> that's a craftsman with snips. It's easy to butcher it if you let a junior
> guy do it.
>
> *Jason Szumlanski** *
>
> *Fafco Solar*
>
>
> On Thu, Mar 21, 2013 at 11:06 AM, Ray Walters  wrote:
>
>>  How is this roof type for flashing?  Do you just cut it with a tin
>> snips?  My project only entails replacing an unflashed conduit penetration
>> with a Soladeck, so I'm hoping it won't be too bad.
>>
>> R.Ray Walters
>> CTO, Solarray, Inc
>> Nabcep Certified PV Installer,
>> Licensed Master Electrician
>> Solar Design Engineer303 505-8760
>>
>> On 3/21/2013 8:58 AM, Jason Szumlanski wrote:
>>
>> We've used the standoff and boot method successfully. It dictates where
>> you put your rows to some extent, but it's not too bad. There is definitely
>> a hefty up-charge on this roof type. It adds quite a bit of labor and
>> material.
>>
>>
>>   *Jason Szumlanski** *
>>
>> *Fafco Solar
>> *
>>
>>
>> On Thu, Mar 21, 2013 at 7:52 AM, Will White 
>> wrote:
>>
>>> We've done a couple of installs on metal shingle roofs and we used the
>>> Unirac stand offs with the Oatey boots.  We had the standoffs and flashing
>>> installed by the roofer so it wouldn't void the roof warranty.  It cost
>>> about $1500 extra but we thought it was worth if in case of a leak.
>>>
>>> Thanks,
>>> Will
>>>
>>>
>>>
>>> __
>>> Will White
>>> Regional Field Operations Manager - New England
>>>
>>> Real Goods Solar
>>> 64 Main St.
>>> Montpelier, VT 05602
>>> Tel: (802) 223-7804 <%28802%29%20223-7804>
>>> Cell: (802) 234-3167 <%28802%29%20234-3167>
>>> www.realgoodssolar.com
>>>
>>>
>>>
>>> -Original Message-
>>> From: re-wrenches-boun...@lists.re-wrenches.org [mailto:
>>> re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jesse Dahl
>>> Sent: Wednesday, March 20, 2013 11:33 PM
>>> To: Wrenches
>>> Subject: [RE-wrenches] Metal shingles
>>>
>>> Hello,
>>>
>>> I looked at a site today and the roofing was a brand of metal shingle.
>>> This was just a quick drive by and check out the site so I don't have
>>> access to the brand or method of attachment.
>>>
>>> It still got me thinking, what are people doing for attachments to
>>> roofing like this?  6/12 pitch, and from the photos the client sent me, the
>>> structure is 2"X6" truss running N-S, with 1"x4" strapping every 4' running
>>> E-W along with 5/8" OSB on top of the strapping.  The trusses look to be on
>>> 4' centers (just judging by the photo).
>>>
>>> The only thing I can think of is EJOT type fasteners through the shingle
>>> into the truss. The shingles would crush a little bit, but the OSB would
>>> support it pretty well.  Otherwise removing the shingles where the feet
>>> would go and then.
>>>
>>> As always thanks for all the help.
>>>
>>> Jesse
>>>
>>> Sent from my iPhone
>>> ___
>>> 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
>>>
>>>
>>
>>
>> ___
>> 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

Re: [RE-wrenches] P1 micro performance

[Drake]

It would be good to quantify the amount of peak 
energy that is lost through power limiting. We 
have a 2160 Watt array on a 40 degree pitched 
roof with a SB 2500HF US inverter. The other day 
I watched the meter hover over 2000 W and peak at 
2490 W. It was a clear, cold day. It runs in the 
STC range and higher many days in the spring.


I have one Enphase customer with a ground mount 
with Sharp 224s and Enphase 190s. The inverters 
can stay pegged for 4 hours at a time in the spring.


Emacs!


The graph above was from a day with some clouds, 
but still power limited much of the day.


It would be good to get a better understanding of 
the annual percentage effect. Enphase claims an 
overall power increase, even with this effect. 
Undersized string inverters are clearly an issue.


Drake



At 12:37 AM 3/22/2013, you wrote:

Thanks for sharing the screen capture, Marco.

Interesting issues to think about here. This is 
actually prime clipping season in many places 
(not sure about Hawaii) due to the cool weather. 
While there are more sun-hours in the summer, 
the cell temperatures are often high enough that 
you won't tend to see rated power out of the modules.


While I'm not running performance models for 
work, the people who do are routinely increasing 
dc-to-ac ratios, often as high as 1.4-to-1. 
Having said that, most inverters aren't installed on a roof. (Not yet anyway.)


I'd probably lean to a more conservative sizing 
ratio for micros. While I can imagine some 
scenarios where I'd be comfortable with a 215 W 
micro on a 265 W module—like a flat roof install 
in Vermont, which reportedly doesn't see 1,000 
W/m^2 very often—I wouldn't try that here in Texas.


On Mar 21, 2013, at 7:54 PM, Marco Mangelsdorf wrote:

Check out the output of the modules below at 
1PM on this Spring equinox for this system here in Hilo, Hawaii.


These mods are SunPower 245s with the Power-One 
micro 250s.  Notice that the AC outputs below are 223 watts and higher.


If we had installed Enphase M215s instead, the 
max output possible would be ~ 224 watts.


If there’s clipping this early in the year, 
imagine the degree to which the clipping will 
be increasing in the months to come as the solar insolation increases.


And these mods were “only” 245s.  Enphase 
states that their M215s are fine with modules 
up to 265 watts!  Imagine the amount of 
clipping taking place when that kind of pairing takes place.


marco



___
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
<>___
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] P1 micro performance

[David Brearley]

The power quality should not be adversely affected. 

While I'm sure different manufacturers may limit power in different ways, in 
theory all the inverter is doing is moving the array off its MPP. Here's a 
description from AE:

If the power available from the array exceeds the nameplate rating of the 
inverter, the inverter will limit 
the power and current coming from the array to the inverter’s maximum nameplate 
power and 
current rating. The inverter does this by reducing the DC input current, which 
causes the DC 
operating voltage to rise above the maximum power point of the array, thereby 
‘clipping’ the 
array output. This effectively limits the output of the array without stressing 
the inverter.

http://solarenergy.advanced-energy.com/upload/File/Application%20Notes/DCLoadingOfPVPinverters.55-600100-75-A.pdf

On Mar 22, 2013, at 9:52 AM, William Dorsett wrote:

> OK, if the upper limit if the curve is “flat topped” do we get increased 
> problems with harmonic noise at the knee as you would in modified “square” 
> wave?
>  
> Bill Dorsett
> Manhattan, KS
>  
> From: re-wrenches-boun...@lists.re-wrenches.org 
> [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of David Brearley
> Sent: Friday, March 22, 2013 8:43 AM
> To: RE-wrenches
> Subject: Re: [RE-wrenches] P1 micro performance
>  
> Thanks for the clarification. 
>  
> FWIW: Flat topping is exactly what occurs. Inverter limiting clips the 
> inverter output power curve (not the voltage or current wave forms). The 
> chart below has one data point for every hour of the year. The 
> clipped/flat-top area is the result of the 225 kW inverter limiting the power 
> output of a 385 kW array: 
>  
>  
> 
>  
> On Mar 22, 2013, at 1:07 AM, boB wrote:
> 
> 
> On 3/21/2013 9:59 PM, Exeltech wrote:
> Wrenches,
> 
> I'm probably a lone voice on this .. and not intending to get overly picky.
> 
> 
> No, two lonely voices, Dan.
> 
> I associate clipping with audio waveforms which stops
> the negative or positive voltage peaks flat.  Also called
> flat-topping.
> 
> Limiting is like turning down the volume.  The waveform
> stays the same and does not distort as it would if it
> were being flat topped (and flat bottomed)
> 
> Thanks !
> boB
> 
> 
> 
> 
> 
> 
> Could we call power limiting what it is .. "limiting", and not "clipping"?
> 
> Clipping implies distortion, which isn't the case here.  Limiting is just 
> that.
> The inverter output is limited to some maximum value -- not "clipped".
> 
> The output power curve flattens when integrated over time, but this still 
> isn't
> distortion in the waveform.  It's simply a point in the output where the 
> derivative
> is zero.  Not increasing, not decreasing.  Just .. zero.  No additional 
> increase
> in the output for an increase in available energy at the input.  Think 
> "governor"
> on an engine
> 
> Thanks.
> 
> 
> Dan Lepinski, Sr. Engineer
> Exeltech / Exeltech Solar Products
> 
> 
> --- On Thu, 3/21/13, David Brearley  
> wrote:
> 
> 
> From: David Brearley 
> Subject: Re: [RE-wrenches] P1 micro performance
> To: "RE-wrenches" 
> Date: Thursday, March 21, 2013, 11:37 PM
> 
> Thanks for sharing the screen capture, Marco.
>  
> Interesting issues to think about here. This is actually prime clipping 
> season in many places (not sure about Hawaii) due to the cool weather. While 
> there are more sun-hours in the summer, the cell temperatures are often high 
> enough that you won't tend to see rated power out of the modules. 
>  
> While I'm not running performance models for work, the people who do are 
> routinely increasing dc-to-ac ratios, often as high as 1.4-to-1. Having said 
> that, most inverters aren't installed on a roof. (Not yet anyway.) 
>  
> I'd probably lean to a more conservative sizing ratio for micros. While I can 
> imagine some scenarios where I'd be comfortable with a 215 W micro on a 265 W 
> module—like a flat roof install in Vermont, which reportedly doesn't see 
> 1,000 W/m^2 very often—I wouldn't try that here in Texas.
> 
> 
>  
> ___
> 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] P1 micro performance

[Nick Soleil]

Good points David, we are in peak season for inverters to be limiting
power.

Marco, your diagram shows that the modules are only overproducing the
Enphase M215's output of 225 watts for a single 15 minute period during the
day.  That would only equate to about 3 watt-hours of lost power on a day
when the modules are producing more than 1000 watt-hours.  That tends to be
in agreement with our study, which can be viewed at;
http://enphase.com/wp-uploads/enphase.com/2011/12/Enphase_White_Paper_Module_Rightsizing.pdf.


Averaged across the entire year, this loss of power would total less than
0.1%, and would be less than 0.2% for a 265 watt module.  Keep in mind that
with degradation accounted for, you will see even less limiting in future
years.  I'd encourage Wrenches to look closely at the attached document.
It is based upon real system production data from Enlighten compared
against actual irradiance data.

Most analysts would agree that some "clipping" is good.  You will have a
better return on your investment when your DC to AC ratio is greater than
one.  In this case, bigger is better.




On Thu, Mar 21, 2013 at 9:37 PM, David Brearley <
david.brear...@solarprofessional.com> wrote:

> Thanks for sharing the screen capture, Marco.
>
> Interesting issues to think about here. This is actually prime clipping
> season in many places (not sure about Hawaii) due to the cool weather.
> While there are more sun-hours in the summer, the cell temperatures are
> often high enough that you won't tend to see rated power out of the
> modules.
>
> While I'm not running performance models for work, the people who do are
> routinely increasing dc-to-ac ratios, often as high as 1.4-to-1. Having
> said that, most inverters aren't installed on a roof. (Not yet anyway.)
>
> I'd probably lean to a more conservative sizing ratio for micros. While I
> can imagine some scenarios where I'd be comfortable with a 215 W micro on a
> 265 W module—like a flat roof install in Vermont, which reportedly doesn't
> see 1,000 W/m^2 very often—I wouldn't try that here in Texas.
>
> On Mar 21, 2013, at 7:54 PM, Marco Mangelsdorf wrote:
>
> Check out the output of the modules below at 1PM on this Spring equinox
> for this system here in Hilo, Hawaii.
> ** **
> These mods are SunPower 245s with the Power-One micro 250s.  Notice that
> the AC outputs below are 223 watts and higher.
> ** **
> If we had installed Enphase M215s instead, the max output possible would be
>  ~ 224 watts.
> ** **
> If there’s clipping this early in the year, imagine the degree to which
> the clipping will be increasing in the months to come as the solar
> insolation increases.
> ** **
> And these mods were “only” 245s.  Enphase states that their M215s are fine
> with modules up to 265 watts!  Imagine the amount of clipping taking place
> when that kind of pairing takes place.
> ** **
> marco
> ** **
> 
> 
> ___
> 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
>
>
>


-- 

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
ever use in just about 8 minutes. And it’s wireless! .”

- William McDonough



This email message is for the sole use of the intended recipient(s) and may 
contain confidential and/or privileged information. If you are not an intended 
recipient, you may not review, use, copy, disclose or distribute this message. 
If you received this mes

Re: [RE-wrenches] Clipping

[Nick Soleil]

Hi Jesse and Wrenches,

One thing that should be understood about the production readings from a DC
optimizer system is that the module level readings are in DC.  That is the
production before being converted to AC, and does not account for the
losses of the inverter.  It isn't really an apples to apples comparison to
equate that production reading to the 225watt max output of the Enphase
M215.


On Thu, Mar 21, 2013 at 8:24 PM, Jesse Dahl  wrote:

> Hello,
>
> Marco's email about Power-1's micros reminded me to send this screen shot.
>
> This is from my system at home.  It consists of 9 210W Kyocera modules,
> Tigo optimizers and a 2kW PV Powered inverter.  It was very cold and clear
> on this day, but every sunny day this winter I've seen numbers similar to
> this at some point each day. I was trying to keep track of the amount of
> power over the STC rating of the modules, but its getting to be a huge
> project. I have hours each day that produce over the 210W.
>
>
> Here is the link to my system. It shows each modules temp, Vdc, Adc and
> power.   I don't have the irradiance meter because of cost.
>
> http://www.tigoenergy.com/site.php?181428c8-1402
>
> Jesse
>
>
>
>
>
> Sent from my iPhone
> ___
> 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
>
>
>


-- 

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
ever use in just about 8 minutes. And it’s wireless! .”

- William McDonough



This email message is for the sole use of the intended recipient(s) and may 
contain confidential and/or privileged information. If you are not an intended 
recipient, you may not review, use, copy, disclose or distribute this message. 
If you received this message in error, please contact the sender by reply email 
and destroy all copies of the original message. 

<>___
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] Cable tray

[Chris Mason]

I'm looking for flat roof cable tray system that is cost effective. We
previously used Cablofil and Cablo-port FSL 12" tray but it is very
expensive for our current application due to the size of the roof. We need
to install about 200' of tray and Cablofil galvanized is eating up the
budget. Can anyone recommend a cheaper alternative.

-- 
Chris Mason
___
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] XW Config Tool problem

[Jeff Yago]

We have an older Windows XP based laptop that we used for years for inverter
and array commissioning that also ran the XW configure software tool using a
USB software driver for the Xanbus Diagnostic Tool.  However, like all
computers, just when you get them to run all the software you need, they
die.   

We had to replace this Windows XP laptop with a Windows 7 based laptop and I
finally found and downloaded the latest version of the XW config. Software
(not easy to find since Xantrex sold to Schneider Electric and now their
download library stretches for miles).

Unfortunately they do not offer (or I could not find after days of searching
their web site!) a download of the USB software driver and we lost this when
our old laptop died.  I am also not sure if the old version would have
worked with this newer Windows 7 laptop.

Anybody have a link to where we can download a USB driver for this Xanbus
interface that will work with Windows 7 ?

 

Thanks,

 

Jeff Yago

 

___
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] XW Config Tool problem

[Allan Sindelar]

  
  
Jeff,
  We've only done a couple of XW systems, but when I needed software
  I was able to have it emailed to me by XW tech support. If you
  don't get a response here, you might try that.
  Allan
  
  


Allan Sindelar
al...@positiveenergysolar.com
  NABCEP Certified Photovoltaic
Installer
NABCEP Certified Technical Sales Professional
New Mexico EE98J Journeyman Electrician
Founder and Chief Technology Officer
Positive Energy, Inc.
3209 Richards Lane (note new address)
Santa Fe, New Mexico 87507
505 424-1112
www.positiveenergysolar.com



 
  On 3/22/2013 2:04 PM, Jeff Yago wrote:


  
  
  
  

  We
  have an older Windows XP based laptop that we used for
  years for inverter and array commissioning that also ran
  the XW configure software tool using a USB software driver
  for the Xanbus Diagnostic Tool.  However, like all
  computers, just when you get them to run all the software
  you need, they die.   
  We
  had to replace this Windows XP laptop with a Windows 7
  based laptop and I finally found and downloaded the latest
  version of the XW config. Software (not easy to find since
  Xantrex sold to Schneider Electric and now their download
  library stretches for miles).
  Unfortunately
  they do not offer (or I could not find after days of
  searching their web site!) a download of the USB software
  driver and we lost this when our old laptop died. 
  I am also not sure if the old version would have worked
  with this newer Windows 7 laptop.
  Anybody
  have a link to where we can download a USB driver for this
  Xanbus interface that will work with Windows 7 ?
   
  Thanks,
   
  Jeff
  Yago
   
  
  

  
  
  
  
  ___
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] XW generator control for thermostat

[Jeff Yago]

We have an Xantrex XW 6048 inverter we installed for a client about 2 years
ago that includes the separate generator  control module, which currently
programmed to start the generator on low battery.  The client has gone
through several  outages when he was not home.  The solar/battery/inverter
system worked too good so the battery charge never dropped low enough to
start the generator, so the heat never came on.  His heat will never run
during a winter outage unless the generator is started.

 

I know the XW generator control module has a specific control input
dedicated (yellow & gray spares) for a remote thermostat that will trigger
the generator to run if the thermostat calls for heat.  I also changed the
program switch enable the thermostat input function (default is off).
However, this feature does not work.  We even shorted the control wires
right at the generator control module but the generator will not remote
start except using the remote display manual off/auto/run program toggle,
which at least shows this generator control module does work.

 

The installation manual states it will start the generator on a "signal"
from a wall thermostat.  Does this mean we need a voltage and not a dry
contact?  

 

Any suggestions??

 

Thanks,

 

Jeff Yago

___
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] Clipping

[Jesse Dahl]

Understood. I guess the point/question was, a 250W module with a 215W micro 
would "flat top" a heck of a lot of power where I live during the 6 months of 
winter we have. I've sized my system to account for increased production during 
this time. I guess it comes down to sizing. I find it hard to do the 250W to 
215W systems seeing what my system does on a regular basis. I'd like to see 
hard numbers from an enphase system showing the gains on the knee of the curve 
compared to "flat topping". 

Jesse

Sent from my iPhone

On Mar 22, 2013, at 1:11 AM, Nick Soleil  wrote:

> Hi Jesse and Wrenches,
> 
> One thing that should be understood about the production readings from a DC 
> optimizer system is that the module level readings are in DC.  That is the 
> production before being converted to AC, and does not account for the losses 
> of the inverter.  It isn't really an apples to apples comparison to equate 
> that production reading to the 225watt max output of the Enphase M215.
> 
> 
> On Thu, Mar 21, 2013 at 8:24 PM, Jesse Dahl  wrote:
>> Hello,
>> 
>> Marco's email about Power-1's micros reminded me to send this screen shot.
>> 
>> This is from my system at home.  It consists of 9 210W Kyocera modules, Tigo 
>> optimizers and a 2kW PV Powered inverter.  It was very cold and clear on 
>> this day, but every sunny day this winter I've seen numbers similar to this 
>> at some point each day. I was trying to keep track of the amount of power 
>> over the STC rating of the modules, but its getting to be a huge project. I 
>> have hours each day that produce over the 210W.
>> 
>> 
>> Here is the link to my system. It shows each modules temp, Vdc, Adc and 
>> power.   I don't have the irradiance meter because of cost.
>> 
>> http://www.tigoenergy.com/site.php?181428c8-1402
>> 
>> Jesse
>> 
>> 
>> 
>> 
>> 
>> Sent from my iPhone
>> ___
>> 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
> 
> 
> 
> -- 
> 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
>  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 
> ever use in just about 8 minutes. And it’s wireless! .”  
> 
> - William McDonough
> 
> 
> This email message is for the sole use of the intended recipient(s) and may 
> contain confidential and/or privileged information. If you are not an 
> intended recipient, you may not review, use, copy, disclose or distribute 
> this message. If you received this message in error, please contact the 
> sender by reply email and destroy all copies of the original message. 
> 
> ___
> 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] Clipping

[Jason Szumlanski]

We now have 230W, 235W, 240W, 245W, and 250W modules on Enphase M215's in
the field. Initial anecdotal evidence shows that the 250W modules are doing
better in our area, even when the cost comparison is taken into account
(normalized for $/watt). I don't have a full year of data yet, but I plan
to do a non-scientific analysis once I do. Of course, the "sweet spot" in
any given year will be different.

As with many things, the PV cost as a percentage of total installed price
is making this quandry less important. Go BIG is becoming the safe bet when
it's a minimal cost comparison.

*Jason Szumlanski** *

*Fafco Solar*

On Fri, Mar 22, 2013 at 5:23 PM, Jesse Dahl  wrote:

> Understood. I guess the point/question was, a 250W module with a 215W
> micro would "flat top" a heck of a lot of power where I live during the 6
> months of winter we have. I've sized my system to account for increased
> production during this time. I guess it comes down to sizing. I find it
> hard to do the 250W to 215W systems seeing what my system does on a regular
> basis. I'd like to see hard numbers from an enphase system showing the
> gains on the knee of the curve compared to "flat topping".
>
> Jesse
>
> Sent from my iPhone
>
> On Mar 22, 2013, at 1:11 AM, Nick Soleil 
> wrote:
>
> Hi Jesse and Wrenches,
>
> One thing that should be understood about the production readings from a
> DC optimizer system is that the module level readings are in DC.  That is
> the production before being converted to AC, and does not account for the
> losses of the inverter.  It isn't really an apples to apples comparison to
> equate that production reading to the 225watt max output of the Enphase
> M215.
>
>
> On Thu, Mar 21, 2013 at 8:24 PM, Jesse Dahl  wrote:
>
>> Hello,
>>
>> Marco's email about Power-1's micros reminded me to send this screen shot.
>>
>> This is from my system at home.  It consists of 9 210W Kyocera modules,
>> Tigo optimizers and a 2kW PV Powered inverter.  It was very cold and clear
>> on this day, but every sunny day this winter I've seen numbers similar to
>> this at some point each day. I was trying to keep track of the amount of
>> power over the STC rating of the modules, but its getting to be a huge
>> project. I have hours each day that produce over the 210W.
>>
>>
>> Here is the link to my system. It shows each modules temp, Vdc, Adc and
>> power.   I don't have the irradiance meter because of cost.
>>
>> http://www.tigoenergy.com/site.php?181428c8-1402
>>
>> Jesse
>>
>>
>>
>>
>>
>> Sent from my iPhone
>> ___
>> 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
>>
>>
>>
>
>
> --
>
> 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
>
>  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
> ever use in just about 8 minutes. And it’s wireless! .”
>
> - William McDonough
>
> This email message is for the sole use of the intended recipient(s) and may 
> contain confidential and/or privileged information. If you are not an 
> intended recipient, you may not review, use, copy, disclose or distribute 
> this message. If you received this message in error, please contact the 
> sender by reply email and destroy all copies of the original message.
>
>
___
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] Clipping

[Jesse Dahl]

Interesting. Jason you're in FLA right?  I'd like to hear from a northern 
installer who's put in a similar group of enphase.  That's exactly the type of 
info I'm looking for.  Like you mention, this might all be a waste if time when 
you consider module price.  I'm having a hard time getting modules under 250W 
now anyway...

Jesse  

Sent from my iPhone

On Mar 22, 2013, at 4:40 PM, Jason Szumlanski  wrote:

> We now have 230W, 235W, 240W, 245W, and 250W modules on Enphase M215's in the 
> field. Initial anecdotal evidence shows that the 250W modules are doing 
> better in our area, even when the cost comparison is taken into account 
> (normalized for $/watt). I don't have a full year of data yet, but I plan to 
> do a non-scientific analysis once I do. Of course, the "sweet spot" in any 
> given year will be different. 
> 
> As with many things, the PV cost as a percentage of total installed price is 
> making this quandry less important. Go BIG is becoming the safe bet when it's 
> a minimal cost comparison.
> 
> Jason Szumlanski 
> Fafco Solar
> 
> On Fri, Mar 22, 2013 at 5:23 PM, Jesse Dahl  wrote:
>> Understood. I guess the point/question was, a 250W module with a 215W micro 
>> would "flat top" a heck of a lot of power where I live during the 6 months 
>> of winter we have. I've sized my system to account for increased production 
>> during this time. I guess it comes down to sizing. I find it hard to do the 
>> 250W to 215W systems seeing what my system does on a regular basis. I'd like 
>> to see hard numbers from an enphase system showing the gains on the knee of 
>> the curve compared to "flat topping". 
>> 
>> Jesse
>> 
>> Sent from my iPhone
>> 
>> On Mar 22, 2013, at 1:11 AM, Nick Soleil  wrote:
>> 
>>> Hi Jesse and Wrenches,
>>> 
>>> One thing that should be understood about the production readings from a DC 
>>> optimizer system is that the module level readings are in DC.  That is the 
>>> production before being converted to AC, and does not account for the 
>>> losses of the inverter.  It isn't really an apples to apples comparison to 
>>> equate that production reading to the 225watt max output of the Enphase 
>>> M215.
>>> 
>>> 
>>> On Thu, Mar 21, 2013 at 8:24 PM, Jesse Dahl  wrote:
 Hello,
 
 Marco's email about Power-1's micros reminded me to send this screen shot.
 
 This is from my system at home.  It consists of 9 210W Kyocera modules, 
 Tigo optimizers and a 2kW PV Powered inverter.  It was very cold and clear 
 on this day, but every sunny day this winter I've seen numbers similar to 
 this at some point each day. I was trying to keep track of the amount of 
 power over the STC rating of the modules, but its getting to be a huge 
 project. I have hours each day that produce over the 210W.
 
 
 Here is the link to my system. It shows each modules temp, Vdc, Adc and 
 power.   I don't have the irradiance meter because of cost.
 
 http://www.tigoenergy.com/site.php?181428c8-1402
 
 Jesse
 
 
 
 
 
 Sent from my iPhone
 ___
 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
>>> 
>>> 
>>> 
>>> -- 
>>> 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
>>>  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 
>>> ever use in just about 8 minutes. And it’s wireless!  .”  
>>> 
>>> - William McDonough
>>> 
>>> This email message is for the sole use of the intended recipient(s) and may 
>>> contain confidential and/or privileged information. If you are not an 
>>> intended recipient, you may not review, use, copy, disclose or distribute 
>>> this message. If you received this message in error, please contact the 
>>> sender by reply email and destroy all copies of the original message.
> 
> ___
> 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: 
> 

Re: [RE-wrenches] XW generator control for thermostat

[Jay Peltz]

Hi jeff

You should check with xantrex.  
I'm thinking its one of the units not being the right version of firmware. 
At least I've seen this type problem before. 

Jay

Peltz power



Sent from my iPhone

On Mar 22, 2013, at 1:23 PM, "Jeff Yago"  wrote:

> We have an Xantrex XW 6048 inverter we installed for a client about 2 years 
> ago that includes the separate generator  control module, which currently 
> programmed to start the generator on low battery.  The client has gone 
> through several  outages when he was not home.  The solar/battery/inverter 
> system worked too good so the battery charge never dropped low enough to 
> start the generator, so the heat never came on.  His heat will never run 
> during a winter outage unless the generator is started.
>  
> I know the XW generator control module has a specific control input dedicated 
> (yellow & gray spares) for a remote thermostat that will trigger the 
> generator to run if the thermostat calls for heat.  I also changed the  
> program switch enable the thermostat input function (default is off).  
> However, this feature does not work.  We even shorted the control wires right 
> at the generator control module but the generator will not remote start 
> except using the remote display manual off/auto/run program toggle, which at 
> least shows this generator control module does work.
>  
> The installation manual states it will start the generator on a “signal” from 
> a wall thermostat.  Does this mean we need a voltage and not a dry contact? 
>  
> Any suggestions??
>  
> Thanks,
>  
> Jeff Yago
> ___
> 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