[RE-wrenches] Testing strings with Tigo

2023-07-05 Thread William Miller via RE-wrenches 
Friends:



We are in the midst of our first off-grid, DC coupled project using Tigo
TS4-A-F RSS switches.



In my few years installing solar I am accustomed to testing PV strings with
a Fluke 87 for Voc, Isc, Vmp and Imp, or some combination.  I do this
regularly in the midst of installing PV so I can be confident once we are
finished there will be no issues with the panels or the wiring.



I understand these tests are not possible with the Tigo units.  With the
circuits unterminated, I can see the 0.6 VDC/Tigo with no keep-alive signal
transmitted.  With the signal being transmitted, I do not see the expected
readings for Voc.  I get only the 0.6/Tigo.  When shorted into the Fluke DC
input the Isc jumps around between 0 and about 2 amps.



I was told by tech support the PV circuits need to be “terminated” at an
inverter before any voltage or current can be measured.  The circuits do
not terminate in an inverter; they will connect to a charge controller
(FM100, in this case).



We have not pulled the PV feeders so connecting to the charge controllers
is not yet possible.  I am nervous about installing the remainder of the
modules without knowing for certain they will produce as they should.



What would you all do to assure yourselves the PV will produce once
connected?



TIA.



William



Miller Solar

17395 Oak Road, Atascadero, CA 93422

805-438-5600

www.millersolar.com

CA Lic. 773985
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Re: [RE-wrenches] evacuated solar tubes

2023-07-05 Thread No Name via RE-wrenches 
Good day Wrenches (Joe Nelson here) Dan's correct, a Zinc Oxide layer of lube 
on the "bulb" will keep it from sieze-welding to the "socket". . I did mostly 
Apricus gear for Evac-tube installs, but any/every manufacturer I've seen uses 
some sort of anti-sieze for their heat-pipes. . I could not find Apricus' 
product on their website. .Loctite does make a high temp version (LB 8036) that 
looks perfectly appropriate, but you'd want your manufacturer blessing if 
possible.

Get Outlook for Android

From: RE-wrenches  on behalf of Dana 
Orzel via RE-wrenches 
Sent: Wednesday, July 5, 2023 6:45:09 AM
To: RE-wrenches 
Cc: Dana Orzel 
Subject: Re: [RE-wrenches] evacuated solar tubes

Yes, it’s called zinc oxide just like sunblock but it’s pure zinc oxide

Dana Orzel
C: 208.721.7003
E- d...@solarwork.com

On Jul 5, 2023, at 7:34 AM, Chris Schaefer via RE-wrenches 
 wrote:


G'day All,

I managed to get myself pulled into an evacuated solar hot water system 
installed by others. The client is trying to get it reinstated. My question to 
the community is do you put any kind of high temperature lube on the probe end 
of the evacuated tube that inserts into the water manifold and if so what do 
you suggest? I've attached a picture of the tube probe. I believe these are 
Sunda tubes.

Thanks much,
Christopher-

Chris Schaefer’s
[https://ci3.googleusercontent.com/mail-sig/AIorK4zwIEzRtOZdJBisBPW2ba9BZwLKpocRcDBtPtw_dLzSM8MNthtmnA5rIuBZ_I3mSXj7FKHtwYk]
Tel 585-229-2083 or Cell 585-748-1870
5115 S Hill Road ~ Canandaigua New York 14424
www.solarandwindfx.com ~ E-mail: 
ch...@solarandwindfx.com

[https://ci3.googleusercontent.com/mail-sig/AIorK4x-VMx3KNrBUjGRGaM4iKmHJ8KxC99V1SUtUEwox6UqTgarqNFHzUcmy9RMxD2D0BZ_64Nrd2s]

Thomas Jefferson, the author of our great Constitution, once said, "democracy" 
will cease to exist when you take away from those who are willing to work and 
give to those who would not."


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Re: [RE-wrenches] Snapnrack end caps

2023-07-05 Thread Garrison via RE-wrenches 
Hi Drake,

I can confirm. The design could be improved.

I’ve noticed that end caps on rails that are flush or a fraction of an inch 
shorter than the panel frame lose the end caps at a higher rate than when the 
rail sticks past the module frame.  My guess is that module movement from 
expansion/contraction is popping them off.

Best,

Garrison Riegel
Celestar Solar LLC



> On Jul 5, 2023, at 3:51 PM, Drake Chamberlin via RE-wrenches 
>  wrote:
> 
> 
> Hello All,
>  
> We have had a lot of end caps fall off Snapnrack Ultra Rail. Kevin at S was 
> wondering if this is a common occurrence. Is it something we are doing, is it 
> freezing and thawing or is it the design of the caps.
>  
> Thank you,
>  
> Drake
>  
> Drake Chamberlin
> 
> Athens Electric LLC
> 
> Ohio Electrical Contractor’s License 44810
> 
> CO Master Electrician’s License 4526
> 
> NABCEP Certified PV Installation Professional
> 
> -- 
>  
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Re: [RE-wrenches] Snapnrack end caps

2023-07-05 Thread Sam Haraldson via RE-wrenches 
> ...Kevin at S was wondering if this is a common occurrence. Is it
> something we are doing, is it freezing and thawing or is it the design of
> the caps.
>

Can confirm.  We receive email from customers on the regular that these are
popping off.  I haven't attempted to draw a correlation between when the
systems were installed and the effect of freeze/thaw but that was the
assumption I've made.

- Sam

>
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[RE-wrenches] Snapnrack end caps

2023-07-05 Thread Drake Chamberlin via RE-wrenches 
Hello All, 


We have had a lot of end caps fall off Snapnrack Ultra Rail. Kevin at
S was wondering if this is a common occurrence. Is it something we are
doing, is it freezing and thawing or is it the design of the caps. 

Thank you, 

Drake 

_Drake Chamberlin_ 

_Athens Electric LLC_ 

_Ohio Electrical Contractor's License 44810_ 

_CO Master Electrician's License 4526_ 

_NABCEP Certified PV Installation Professional_ 


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[RE-wrenches] SolarEdge and Schneider Conext

2023-07-05 Thread Howie Michaelson via RE-wrenches 
Hi all,
Had anyone successfully established communications between a SolarEdge
single phase inverter and a Schneider Gateway? I have a client with a
battery backup system which included a dual stack of XW pros and 2 AC
coupled SolarEdge inverters. He would really like to be able to use one
monitoring site to see all the equipment. Right now, the SolarEdge
inverters are invisible on the Insight cloud or local sites, with net
production magically appearing from the house loads. Any ideas or there?
Thanks,
Howie
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Re: [RE-wrenches] evacuated solar tubes

2023-07-05 Thread Dana Orzel via RE-wrenches 
Yes, it’s called zinc oxide just like sunblock but it’s pure zinc oxideDana OrzelC: 208.721.7003E- d...@solarwork.comOn Jul 5, 2023, at 7:34 AM, Chris Schaefer via RE-wrenches  wrote:G'day All,I managed to get myself pulled into an evacuated solar hot water system installed by others. The client is trying to get it reinstated. My question to the community is do you put any kind of high temperature lube on the probe end of the evacuated tube that inserts into the water manifold and if so what do you suggest? I've attached a picture of the tube probe. I believe these are Sunda tubes.Thanks much,Christopher- Chris Schaefer’sTel 585-229-2083 or Cell 585-748-1870 5115
S Hill Road ~ Canandaigua New York 14424www.solarandwindfx.com ~ E-mail: ch...@solarandwindfx.com

Thomas Jefferson,
the author of our great Constitution, once said, "democracy" will
cease to exist when you take away from those who are willing to work and give
to those who would not."
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