Re: [RE-wrenches] Exeltech Inverters

[Max Balchowsky]

I, too, have had some experience with Exeltech. I think it's an excellent 
product and the installs I've done have been trouble free. It's a little on the 
pricey side but an excellent system. I liked the fact that everything is rack 
mounted.

Max Balchowsky
SEE Systems
760-403-6810





From: Kurt Albershardt 
To: RE-wrenches 
Sent: Sat, November 14, 2009 10:14:15 AM
Subject: Re: [RE-wrenches] Exeltech Inverters


I can not speak to their grid tie product (which they have been trying to get 
out the door for almost a decade now) but their XP & MX lines have served well 
over the years and Exeltech has always been a good company to deal with and has 
stood behind what they sold.

I notice a new module back inverter on their site 
http://www.exeltech.com/pvacproduct.htm

 



On Nov 11, 2009, at 9:00 , wind...@wind-sun.com wrote:

I would add the new Exeltech grid tie inverter to that question. I see their ad 
in the latest HP magazine, but no info on their website about them, and no 
distributor seems to know much about them.
> 
>..
>Northern Arizona Wind & Sun - Electricity From The Sun Since 1979
>Solar Discussion Forum: http://www.wind-sun.com/ForumVB/
>..
>- Original Message -
>>From: William Miller
>>To: RE-wrenches
>>Sent: Wednesday, November 11, 2009 8:53 AM
>>Subject: [RE-wrenches] Aurora Inverters
>>
>>Friends:
>>
>>Does anyone here have any experience with the Aurora inverters?  I visited 
>>their booth in Anaheim and was impressed with some of the features:
>>
>>Made in Camarillo, CA, near the Solar World plant.
>>Dual MPPT inputs
>>90 to 500 VDC input window.
>>Transformerless (or balanced, as we would say in broadcasting) inputs
>>Nema 4 case.
>>Up to 97% efficient
>>
>>I am particularly intrigued with the Transformerless input.  This, IMHO is a 
>>much safer scheme.  Prior to a ground fault, no polarity is referenced to 
>>ground, reducing shock hazard significantly.  Any ground fault only 
>>references one side of the circuit to the racking and metallic structures.
>>
>>I'd like to know more.
>>
>>William Miller
>>
>>
>>Please note new e-mail address and domain:
>>
>>William Miller 
>>Miller Solar
>>Voice :805-438-5600 Fax: 805-438-4607
>>email: will...@millersolar.com
>>http://millersolar.com/
>>
>>Options & settings:
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Re: [RE-wrenches] Tape for attaching NEC Labels

[Matt Lafferty]

Hi Bob,
 
3M VHB 4945 is the good stuff. You will need to properly prepare both
surfaces for best adhesion. Do not assume that just wiping the surface with
a rag will suffice. Particularly painted &/or oxidized surfaces. Use a
cleaning agent and clean rags or cloths. Works best with moderate
temperatures and low humidity. The "worst" thing you can have happen is to
have your placard fall off because the tape didn't stick permanently to the
opposing surface. Now you have a placard ($$$) with some really stubborn
gooey stuff ($$$) stuck to the back that you have to clean off and start
over. So much better to do it right the first time.
 
MUCH better pricing is available IF you can take a few rolls.
www.pack-n-tape.com   is one source. 
3/4" x 36 yd; Min 12 rolls; $62.04/roll
1" x 36 yd; Min 9 rolls; $77.56/roll
2" x 36 yd; Min 6 rolls; $155.10/roll
 
You might also be able to get a good deal from one of the formerly
whoop-de-do-big-shot integrators that are on their way out of business right
now. From what I hear, everything must go and any offer will be
considered If you hear of any of these, give 'em a call. I'm not gonna
mention any names to anybody, so please don't ask. 
 
Some folks might get their panties in a bunch over this, but I prefer
mechanical attachment for outdoor applications on vertical surfaces. Tap &
screw or rivet. Spot the back (inside) with a good liquid sealant and call
it a day. I know... "might violate enclosure NEMA whatever rating"... Is the
intent to put a permanent placard on or not? I have seen way too many
missing placards over the years. Always with the same signature... Some
discolored adhesive.
 
There's a reason that mature electrical equipment manufacturers (Square D,
GE, Cutler-Hammer, Etc) use mechanical fasteners to attach their signage!
 
-Matt Lafferty
 
  _  

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Bob Clark
Sent: Monday, November 16, 2009 7:42 PM
To: re-wrenches@lists.re-wrenches.org
Subject: [RE-wrenches] Tape for attaching NEC Labels



RE-Wrenches:

 

Our little PV install business has located a local label maker (metallic
label with contrasting text).  We are searching for an adhesive tape to
secure these labels that is rated for out-door locations and high
temperatures.  Thus far we have found 3M VHBTM 4945 that meets UL standard
746C for electrical use-two, 100-ft. x 1" rolls for $219.70 (THIS WILL LAST
A LONG TIME!).

 

Anybody have another equally effective, code satisfying, but less costly
tape alternative?

 

Bob Clark

SolarWind Energy Systems, LLC

P.O. Box 1234

Okanogan, WA 98840

(509) 826-1259

 

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[RE-wrenches] Bonding Rails

[Peter Parrish]

We have been using WEEB clips on all of our installations for over a year
now. We include the WEEB data/installation sheets in our permit package and
patiently point out the clips to inspectors who haven't seen the WEEB system
yet. 

 

Two questions:

 

(1) For ProSolar rails, can we use one WEEB clip to bond two adjacent
modules (say, modules A and B) on the upper rail (say, rail #1) and then use
a second WEEB clip to bond the next two adjacent modules (say, modules C and
D) on the lower rail (say, rail #2) and then use a listed lay-in lug (with
in our case a WEEB clip) to bond to either rail #1 or #2 to continue the
grounding?

(2) If we DON"T use WEEB clips and use the conventional bonding
methodology per module manufacturer's instructions (proper location on the
module, and listed screws, washers and nuts), do we have to ALSO bond the
rails? We have an inspector in Pasadena, CA that is requiring this, but this
is the first time we have been required to do so. Perhaps in the past year
in ignorant bliss we have missed an important development? Or have we been
dodging bullets for seven years and not even knowing it?

 

- Peter

Peter T. Parrish, Ph.D., President
California Solar Engineering, Inc.
820 Cynthia Ave., Los Angeles, CA 90065
CA Lic. 854779, NABCEP Cert. 031806-26
  peter.parr...@calsolareng.com  
Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885


 

 

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Re: [RE-wrenches] Bonding Rails

[Michael Kelly]

Peter,

I've never used the ProSolar rails, so I can't speak to 1).

On 2), yes, you must bond the rails with a listed device if they are not
bonded to the modules.  The nice thing about the WEEB is that it allows one
to bond the modules and rails together, and then you can pick up the bond
from the rails (without having to hit every module with a lug and the EGC).

- Mike
--
Michael Kelly
Project Manager / Project Engineer
NABCEP Certified Solar PV Installer ™

SolarFlair Energy, Inc.
11 Mayhew Street
Framingham, MA 01702
Direct Mobile: 617-899-9840
Main Phone: 508-293-4293
Main Fax: 508-293-4003
m...@solarflair.com


On Tue, Nov 17, 2009 at 2:56 PM, Peter Parrish <
peter.parr...@calsolareng.com> wrote:

>  We have been using WEEB clips on all of our installations for over a year
> now. We include the WEEB data/installation sheets in our permit package and
> patiently point out the clips to inspectors who haven’t seen the WEEB system
> yet.
>
>
>
> Two questions:
>
>
>
> (1) For ProSolar rails, can we use one WEEB clip to bond two adjacent
> modules (say, modules A and B) on the upper rail (say, rail #1) and then use
> a second WEEB clip to bond the next two adjacent modules (say, modules C and
> D) on the lower rail (say, rail #2) and then use a listed lay-in lug (with
> in our case a WEEB clip) to bond to either rail #1 or #2 to continue the
> grounding?
>
> (2) If we DON”T use WEEB clips and use the conventional bonding
> methodology per module manufacturer’s instructions (proper location on the
> module, and listed screws, washers and nuts), do we have to ALSO bond the
> rails? We have an inspector in Pasadena, CA that is requiring this, but this
> is the first time we have been required to do so. Perhaps in the past year
> in ignorant bliss we have missed an important development? Or have we been
> dodging bullets for seven years and not even knowing it?
>
>
>
> - Peter
>
> Peter T. Parrish, Ph.D., President
> California Solar Engineering, Inc.
> 820 Cynthia Ave., Los Angeles, CA 90065
> CA Lic. 854779, NABCEP Cert. 031806-26
> peter.parr...@calsolareng.com
> Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885
>
>
>
>
>
>
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Re: [RE-wrenches] Bonding Rails

[Dave Click]

Peter,

(1) it appears that per the WEEB installation manual:
http://www.we-llc.com/Datasheets/104-0404-08-008.pdf
(page 8) you need to have one WEEB per module rather than one for every 
other module as you suggest.


(2) 690.43 Equipment Grounding.
Exposed non–current-carrying metal parts of module frames, equipment, 
and conductor enclosures shall be grounded in accordance with 250.134 or 
250.136(A) regardless of voltage.


I guess the latter answer depends on whether your AHJ considers the 
rails "exposed"-- I would, so in this situation I'd have lugs on each 
module and each rail.


DKC

 Original Message 
Subject: [RE-wrenches] Bonding Rails
From: Peter Parrish 
To: 'RE-wrenches' 
Date: 2009/11/17 14:56

We have been using WEEB clips on all of our installations for over a 
year now. We include the WEEB data/installation sheets in our permit 
package and patiently point out the clips to inspectors who haven’t seen 
the WEEB system yet.


 


Two questions:

 

(1) For ProSolar rails, can we use one WEEB clip to bond two 
adjacent modules (say, modules A and B) on the upper rail (say, rail #1) 
and then use a second WEEB clip to bond the next two adjacent modules 
(say, modules C and D) on the lower rail (say, rail #2) and then use a 
listed lay-in lug (with in our case a WEEB clip) to bond to either rail 
#1 or #2 to continue the grounding?


(2) If we DON”T use WEEB clips and use the conventional bonding 
methodology per module manufacturer’s instructions (proper location on 
the module, and listed screws, washers and nuts), do we have to ALSO 
bond the rails? We have an inspector in Pasadena, CA that is requiring 
this, but this is the first time we have been required to do so. Perhaps 
in the past year in ignorant bliss we have missed an important 
development? Or have we been dodging bullets for seven years and not 
even knowing it?


 


- Peter

Peter T. Parrish, Ph.D., President
California Solar Engineering, Inc.
820 Cynthia Ave., Los Angeles, CA 90065
CA Lic. 854779, NABCEP Cert. 031806-26
peter.parr...@calsolareng.com  
Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 
  

 

 





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Re: [RE-wrenches] Bonding Rails

[Peter Parrish]

On page 8 it would appear that we need TWO WEEB clips bonding modules A and
B to rails #1 and #2 and another TWO WEEB clips bonding modules C and D to
rails #1 and #2, etc. - Peter

-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dave Click
Sent: Tuesday, November 17, 2009 12:14 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Bonding Rails

Peter,

(1) it appears that per the WEEB installation manual:
http://www.we-llc.com/Datasheets/104-0404-08-008.pdf
(page 8) you need to have one WEEB per module rather than one for every 
other module as you suggest.

(2) 690.43 Equipment Grounding.
Exposed non-current-carrying metal parts of module frames, equipment, 
and conductor enclosures shall be grounded in accordance with 250.134 or 
250.136(A) regardless of voltage.

I guess the latter answer depends on whether your AHJ considers the 
rails "exposed"-- I would, so in this situation I'd have lugs on each 
module and each rail.

DKC

 Original Message 
Subject: [RE-wrenches] Bonding Rails
From: Peter Parrish 
To: 'RE-wrenches' 
Date: 2009/11/17 14:56

> We have been using WEEB clips on all of our installations for over a 
> year now. We include the WEEB data/installation sheets in our permit 
> package and patiently point out the clips to inspectors who haven't seen 
> the WEEB system yet.
> 
>  
> 
> Two questions:
> 
>  
> 
> (1) For ProSolar rails, can we use one WEEB clip to bond two 
> adjacent modules (say, modules A and B) on the upper rail (say, rail #1) 
> and then use a second WEEB clip to bond the next two adjacent modules 
> (say, modules C and D) on the lower rail (say, rail #2) and then use a 
> listed lay-in lug (with in our case a WEEB clip) to bond to either rail 
> #1 or #2 to continue the grounding?
> 
> (2) If we DON"T use WEEB clips and use the conventional bonding 
> methodology per module manufacturer's instructions (proper location on 
> the module, and listed screws, washers and nuts), do we have to ALSO 
> bond the rails? We have an inspector in Pasadena, CA that is requiring 
> this, but this is the first time we have been required to do so. Perhaps 
> in the past year in ignorant bliss we have missed an important 
> development? Or have we been dodging bullets for seven years and not 
> even knowing it?
> 
>  
> 
> - Peter
> 
> Peter T. Parrish, Ph.D., President
> California Solar Engineering, Inc.
> 820 Cynthia Ave., Los Angeles, CA 90065
> CA Lic. 854779, NABCEP Cert. 031806-26
> peter.parr...@calsolareng.com  
> Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 
>

> 
>  
> 
>  
> 
> 
> 
> 
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[RE-wrenches] Splice Caps

[Peter Parrish]

We have been using Buchanan brand "splice caps" to splice two to three #10
Cu EGCs inside 3R-rated j-boxes. Is there an approved methodology for
splicing ECGs under PV modules (i.e. exposed to the elements). I understand
that otherwise listed lay-in lugs are not acceptable for double lugging. -
Peter  

 
Peter T. Parrish, Ph.D., President
California Solar Engineering, Inc.
820 Cynthia Ave., Los Angeles, CA 90065
CA Lic. 854779, NABCEP Cert. 031806-26
peter.parr...@calsolareng.com  
Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885

 

-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dave Click
Sent: Tuesday, November 17, 2009 12:14 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Bonding Rails

Peter,

(1) it appears that per the WEEB installation manual:
http://www.we-llc.com/Datasheets/104-0404-08-008.pdf
(page 8) you need to have one WEEB per module rather than one for every 
other module as you suggest.

(2) 690.43 Equipment Grounding.
Exposed non-current-carrying metal parts of module frames, equipment, 
and conductor enclosures shall be grounded in accordance with 250.134 or 
250.136(A) regardless of voltage.

I guess the latter answer depends on whether your AHJ considers the 
rails "exposed"-- I would, so in this situation I'd have lugs on each 
module and each rail.

DKC

 Original Message 
Subject: [RE-wrenches] Bonding Rails
From: Peter Parrish 
To: 'RE-wrenches' 
Date: 2009/11/17 14:56

> We have been using WEEB clips on all of our installations for over a 
> year now. We include the WEEB data/installation sheets in our permit 
> package and patiently point out the clips to inspectors who haven't seen 
> the WEEB system yet.
> 
>  
> 
> Two questions:
> 
>  
> 
> (1) For ProSolar rails, can we use one WEEB clip to bond two 
> adjacent modules (say, modules A and B) on the upper rail (say, rail #1) 
> and then use a second WEEB clip to bond the next two adjacent modules 
> (say, modules C and D) on the lower rail (say, rail #2) and then use a 
> listed lay-in lug (with in our case a WEEB clip) to bond to either rail 
> #1 or #2 to continue the grounding?
> 
> (2) If we DON"T use WEEB clips and use the conventional bonding 
> methodology per module manufacturer's instructions (proper location on 
> the module, and listed screws, washers and nuts), do we have to ALSO 
> bond the rails? We have an inspector in Pasadena, CA that is requiring 
> this, but this is the first time we have been required to do so. Perhaps 
> in the past year in ignorant bliss we have missed an important 
> development? Or have we been dodging bullets for seven years and not 
> even knowing it?
> 
>  
> 
> - Peter
> 
> Peter T. Parrish, Ph.D., President
> California Solar Engineering, Inc.
> 820 Cynthia Ave., Los Angeles, CA 90065
> CA Lic. 854779, NABCEP Cert. 031806-26
> peter.parr...@calsolareng.com  
> Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 
>

> 
>  
> 
>  
> 
> 
> 
> 
> ___
> List sponsored by Home Power magazine
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Re: [RE-wrenches] Splice Caps

[Chris Anderson]

What economical splice hardware are people using when you don't have two end of 
a ground wires to land in the Buchanan Splice Caps? Split bolts are mighty 
expensive

-Chris Anderson
  Chief Technology Officer
  Resources Group 
  C: 603-732-2411
  Borrego Solar Systems

-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Peter Parrish
Sent: Tuesday, November 17, 2009 4:04 PM
To: 'RE-wrenches'
Subject: [RE-wrenches] Splice Caps

We have been using Buchanan brand "splice caps" to splice two to three #10
Cu EGCs inside 3R-rated j-boxes. Is there an approved methodology for
splicing ECGs under PV modules (i.e. exposed to the elements). I understand
that otherwise listed lay-in lugs are not acceptable for double lugging. -
Peter  

 
Peter T. Parrish, Ph.D., President
California Solar Engineering, Inc.
820 Cynthia Ave., Los Angeles, CA 90065
CA Lic. 854779, NABCEP Cert. 031806-26
peter.parr...@calsolareng.com  
Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885

 

-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dave Click
Sent: Tuesday, November 17, 2009 12:14 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Bonding Rails

Peter,

(1) it appears that per the WEEB installation manual:
http://www.we-llc.com/Datasheets/104-0404-08-008.pdf
(page 8) you need to have one WEEB per module rather than one for every 
other module as you suggest.

(2) 690.43 Equipment Grounding.
Exposed non-current-carrying metal parts of module frames, equipment, 
and conductor enclosures shall be grounded in accordance with 250.134 or 
250.136(A) regardless of voltage.

I guess the latter answer depends on whether your AHJ considers the 
rails "exposed"-- I would, so in this situation I'd have lugs on each 
module and each rail.

DKC

 Original Message 
Subject: [RE-wrenches] Bonding Rails
From: Peter Parrish 
To: 'RE-wrenches' 
Date: 2009/11/17 14:56

> We have been using WEEB clips on all of our installations for over a 
> year now. We include the WEEB data/installation sheets in our permit 
> package and patiently point out the clips to inspectors who haven't seen 
> the WEEB system yet.
> 
>  
> 
> Two questions:
> 
>  
> 
> (1) For ProSolar rails, can we use one WEEB clip to bond two 
> adjacent modules (say, modules A and B) on the upper rail (say, rail #1) 
> and then use a second WEEB clip to bond the next two adjacent modules 
> (say, modules C and D) on the lower rail (say, rail #2) and then use a 
> listed lay-in lug (with in our case a WEEB clip) to bond to either rail 
> #1 or #2 to continue the grounding?
> 
> (2) If we DON"T use WEEB clips and use the conventional bonding 
> methodology per module manufacturer's instructions (proper location on 
> the module, and listed screws, washers and nuts), do we have to ALSO 
> bond the rails? We have an inspector in Pasadena, CA that is requiring 
> this, but this is the first time we have been required to do so. Perhaps 
> in the past year in ignorant bliss we have missed an important 
> development? Or have we been dodging bullets for seven years and not 
> even knowing it?
> 
>  
> 
> - Peter
> 
> Peter T. Parrish, Ph.D., President
> California Solar Engineering, Inc.
> 820 Cynthia Ave., Los Angeles, CA 90065
> CA Lic. 854779, NABCEP Cert. 031806-26
> peter.parr...@calsolareng.com  
> Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 
>

> 
>  
> 
>  
> 
> 
> 
> 
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Check out p

Re: [RE-wrenches] Bonding Rails

[Dave Click]

Yes, that's correct. In my answer I was just rephrasing it to say you'd 
need twice as many WEEBs as you think. As I understand it, the intent of 
this layout is to give the installer two chances to bond each module 
properly to the rail.


Unirac has a similar requirement for its UGC-1s on SolarMount, but in 
their schematic they don't require you to bond to both rails. So if you 
have four modules, you need UGC-1s between A&B, B&C, C&D but you can 
have them all on a single rail. I think it's better to alternate between 
rails anyway: A&B (top rail), B&C (bottom rail), etc.


DKC

 Original Message 
Subject: Re: [RE-wrenches] Bonding Rails
From: Peter Parrish 
To: 'RE-wrenches' 
Date: 2009/11/17 15:55


On page 8 it would appear that we need TWO WEEB clips bonding modules A and
B to rails #1 and #2 and another TWO WEEB clips bonding modules C and D to
rails #1 and #2, etc. - Peter

-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dave Click
Sent: Tuesday, November 17, 2009 12:14 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Bonding Rails

Peter,

(1) it appears that per the WEEB installation manual:
http://www.we-llc.com/Datasheets/104-0404-08-008.pdf
(page 8) you need to have one WEEB per module rather than one for every 
other module as you suggest.


(2) 690.43 Equipment Grounding.
Exposed non-current-carrying metal parts of module frames, equipment, 
and conductor enclosures shall be grounded in accordance with 250.134 or 
250.136(A) regardless of voltage.


I guess the latter answer depends on whether your AHJ considers the 
rails "exposed"-- I would, so in this situation I'd have lugs on each 
module and each rail.


DKC

 Original Message 
Subject: [RE-wrenches] Bonding Rails
From: Peter Parrish 
To: 'RE-wrenches' 
Date: 2009/11/17 14:56

We have been using WEEB clips on all of our installations for over a 
year now. We include the WEEB data/installation sheets in our permit 
package and patiently point out the clips to inspectors who haven't seen 
the WEEB system yet.


 


Two questions:

 

(1) For ProSolar rails, can we use one WEEB clip to bond two 
adjacent modules (say, modules A and B) on the upper rail (say, rail #1) 
and then use a second WEEB clip to bond the next two adjacent modules 
(say, modules C and D) on the lower rail (say, rail #2) and then use a 
listed lay-in lug (with in our case a WEEB clip) to bond to either rail 
#1 or #2 to continue the grounding?


(2) If we DON"T use WEEB clips and use the conventional bonding 
methodology per module manufacturer's instructions (proper location on 
the module, and listed screws, washers and nuts), do we have to ALSO 
bond the rails? We have an inspector in Pasadena, CA that is requiring 
this, but this is the first time we have been required to do so. Perhaps 
in the past year in ignorant bliss we have missed an important 
development? Or have we been dodging bullets for seven years and not 
even knowing it?


 


- Peter

Peter T. Parrish, Ph.D., President
California Solar Engineering, Inc.
820 Cynthia Ave., Los Angeles, CA 90065
CA Lic. 854779, NABCEP Cert. 031806-26
peter.parr...@calsolareng.com  
Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 



 

 





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Re: [RE-wrenches] Bonding Rails

[Peter Parrish]

That still works to approximately one clip per rail (actually N-1 clips for
N modules). - Peter

 
 Peter T. Parrish, Ph.D., President
California Solar Engineering, Inc.
820 Cynthia Ave., Los Angeles, CA 90065
CA Lic. 854779, NABCEP Cert. 031806-26
peter.parr...@calsolareng.com  
Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885

 

-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dave Click
Sent: Tuesday, November 17, 2009 1:09 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Bonding Rails

Yes, that's correct. In my answer I was just rephrasing it to say you'd 
need twice as many WEEBs as you think. As I understand it, the intent of 
this layout is to give the installer two chances to bond each module 
properly to the rail.

Unirac has a similar requirement for its UGC-1s on SolarMount, but in 
their schematic they don't require you to bond to both rails. So if you 
have four modules, you need UGC-1s between A&B, B&C, C&D but you can 
have them all on a single rail. I think it's better to alternate between 
rails anyway: A&B (top rail), B&C (bottom rail), etc.

DKC

 Original Message 
Subject: Re: [RE-wrenches] Bonding Rails
From: Peter Parrish 
To: 'RE-wrenches' 
Date: 2009/11/17 15:55

> On page 8 it would appear that we need TWO WEEB clips bonding modules A
and
> B to rails #1 and #2 and another TWO WEEB clips bonding modules C and D to
> rails #1 and #2, etc. - Peter
> 
> -Original Message-
> From: re-wrenches-boun...@lists.re-wrenches.org
> [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dave Click
> Sent: Tuesday, November 17, 2009 12:14 PM
> To: RE-wrenches
> Subject: Re: [RE-wrenches] Bonding Rails
> 
> Peter,
> 
> (1) it appears that per the WEEB installation manual:
> http://www.we-llc.com/Datasheets/104-0404-08-008.pdf
> (page 8) you need to have one WEEB per module rather than one for every 
> other module as you suggest.
> 
> (2) 690.43 Equipment Grounding.
> Exposed non-current-carrying metal parts of module frames, equipment, 
> and conductor enclosures shall be grounded in accordance with 250.134 or 
> 250.136(A) regardless of voltage.
> 
> I guess the latter answer depends on whether your AHJ considers the 
> rails "exposed"-- I would, so in this situation I'd have lugs on each 
> module and each rail.
> 
> DKC
> 
>  Original Message 
> Subject: [RE-wrenches] Bonding Rails
> From: Peter Parrish 
> To: 'RE-wrenches' 
> Date: 2009/11/17 14:56
> 
>> We have been using WEEB clips on all of our installations for over a 
>> year now. We include the WEEB data/installation sheets in our permit 
>> package and patiently point out the clips to inspectors who haven't seen 
>> the WEEB system yet.
>>
>>  
>>
>> Two questions:
>>
>>  
>>
>> (1) For ProSolar rails, can we use one WEEB clip to bond two 
>> adjacent modules (say, modules A and B) on the upper rail (say, rail #1) 
>> and then use a second WEEB clip to bond the next two adjacent modules 
>> (say, modules C and D) on the lower rail (say, rail #2) and then use a 
>> listed lay-in lug (with in our case a WEEB clip) to bond to either rail 
>> #1 or #2 to continue the grounding?
>>
>> (2) If we DON"T use WEEB clips and use the conventional bonding 
>> methodology per module manufacturer's instructions (proper location on 
>> the module, and listed screws, washers and nuts), do we have to ALSO 
>> bond the rails? We have an inspector in Pasadena, CA that is requiring 
>> this, but this is the first time we have been required to do so. Perhaps 
>> in the past year in ignorant bliss we have missed an important 
>> development? Or have we been dodging bullets for seven years and not 
>> even knowing it?
>>
>>  
>>
>> - Peter
>>
>> Peter T. Parrish, Ph.D., President
>> California Solar Engineering, Inc.
>> 820 Cynthia Ave., Los Angeles, CA 90065
>> CA Lic. 854779, NABCEP Cert. 031806-26
>> peter.parr...@calsolareng.com  
>> Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 
>>
> 
>>  
>>
>>  
>>
>>
>> 
>>
>> ___
>> List sponsored by Home Power magazine
>>
>> List Address: RE-wrenches@lists.re-wrenches.org
>>
>> Options & settings:
>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>>
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>>
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>> www.members.re-wrenches.org
>>
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[RE-wrenches] SW 4024 now grid tie

[Dana]

Hey all,

 

I have a client who was off grid and is now grid tied and has [2] Trace SW
4024 Inverters. I realize the parameters are not the best for high
efficiency but the client is not into changing out to newer equipment.

 

Whom at which telephone @ Xantrex might be the best bet to talk to for
programming advice for grid tie application for the SW 4024 inverters?

 

Dana Orzel

 

Great Solar Works, Inc

www.solarwork.com

E - d...@solarwork.com

V - 970.626.5253

F - 970.626.4140

C - 970.209.4076

 

I will be the shift in how the world uses power! - Dana Orzel

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Re: [RE-wrenches] Splice Caps

[August Goers]

Chris -

We use these Panduit C-taps:

http://pdf.directindustry.com/pdf/panduit/panduit-catalog/12722-23882-_455.html

They work great and the compression tool is relatively inexpensive but there is 
question about whether they're listed for use with solid wire.

-August

August Goers

Luminalt Energy Corporation
O: 415.564.7652
M: 415.559.1525
F: 650.244.9167

-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Chris Anderson
Sent: Tuesday, November 17, 2009 1:11 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Splice Caps

What economical splice hardware are people using when you don't have two end of 
a ground wires to land in the Buchanan Splice Caps? Split bolts are mighty 
expensive

-Chris Anderson
  Chief Technology Officer
  Resources Group 
  C: 603-732-2411
  Borrego Solar Systems

-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Peter Parrish
Sent: Tuesday, November 17, 2009 4:04 PM
To: 'RE-wrenches'
Subject: [RE-wrenches] Splice Caps

We have been using Buchanan brand "splice caps" to splice two to three #10
Cu EGCs inside 3R-rated j-boxes. Is there an approved methodology for
splicing ECGs under PV modules (i.e. exposed to the elements). I understand
that otherwise listed lay-in lugs are not acceptable for double lugging. -
Peter  

 
Peter T. Parrish, Ph.D., President
California Solar Engineering, Inc.
820 Cynthia Ave., Los Angeles, CA 90065
CA Lic. 854779, NABCEP Cert. 031806-26
peter.parr...@calsolareng.com  
Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885

 

-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dave Click
Sent: Tuesday, November 17, 2009 12:14 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Bonding Rails

Peter,

(1) it appears that per the WEEB installation manual:
http://www.we-llc.com/Datasheets/104-0404-08-008.pdf
(page 8) you need to have one WEEB per module rather than one for every 
other module as you suggest.

(2) 690.43 Equipment Grounding.
Exposed non-current-carrying metal parts of module frames, equipment, 
and conductor enclosures shall be grounded in accordance with 250.134 or 
250.136(A) regardless of voltage.

I guess the latter answer depends on whether your AHJ considers the 
rails "exposed"-- I would, so in this situation I'd have lugs on each 
module and each rail.

DKC

 Original Message 
Subject: [RE-wrenches] Bonding Rails
From: Peter Parrish 
To: 'RE-wrenches' 
Date: 2009/11/17 14:56

> We have been using WEEB clips on all of our installations for over a 
> year now. We include the WEEB data/installation sheets in our permit 
> package and patiently point out the clips to inspectors who haven't seen 
> the WEEB system yet.
> 
>  
> 
> Two questions:
> 
>  
> 
> (1) For ProSolar rails, can we use one WEEB clip to bond two 
> adjacent modules (say, modules A and B) on the upper rail (say, rail #1) 
> and then use a second WEEB clip to bond the next two adjacent modules 
> (say, modules C and D) on the lower rail (say, rail #2) and then use a 
> listed lay-in lug (with in our case a WEEB clip) to bond to either rail 
> #1 or #2 to continue the grounding?
> 
> (2) If we DON"T use WEEB clips and use the conventional bonding 
> methodology per module manufacturer's instructions (proper location on 
> the module, and listed screws, washers and nuts), do we have to ALSO 
> bond the rails? We have an inspector in Pasadena, CA that is requiring 
> this, but this is the first time we have been required to do so. Perhaps 
> in the past year in ignorant bliss we have missed an important 
> development? Or have we been dodging bullets for seven years and not 
> even knowing it?
> 
>  
> 
> - Peter
> 
> Peter T. Parrish, Ph.D., President
> California Solar Engineering, Inc.
> 820 Cynthia Ave., Los Angeles, CA 90065
> CA Lic. 854779, NABCEP Cert. 031806-26
> peter.parr...@calsolareng.com  
> Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 
>

> 
>  
> 
>  
> 
> 
> 
> 
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Re: [RE-wrenches] Bonding Rails

[Kirpal Khalsa]

Hey GuysUnirac recently changed their requirement to 2 clips between
each module...one on the upper rail and one on the lower
rail..therefore by my count you need 2N-2 clips for N modules, you don't
need any clips at the ends of the row of modules   the link to their
diagram and instructions is:  http://www.unirac.com/pdf/ii225_5.pdf


I think the overall intention is that it is better to not skimp on
grounding.for all the inner modules in a row they are bonded to the
rails at 4 points, each of the rails has a ground lug.  Should any module be
removed for any reason the remainder of the modules are still solidly
grounded..

My understanding is that Uniracs ground lugs and clips are licensed from
Wiley so I would guess that the Wiley direct ground lugs and clips have the
same requirements..

My take is that this grounding system is soo much more convenient and
fast than some of the ground lug to module systems we used to use...(and
still use in top of pole mounts)...
Cheers,

-- 
Sunny Regards,
Kirpal Khalsa
NABCEP Certified Solar PV Installer
Renewable Energy Systems
www.oregonsolarworks.com
541-218-0201 m
541-592-3958 o

On Tue, Nov 17, 2009 at 1:47 PM, Peter Parrish <
peter.parr...@calsolareng.com> wrote:

> That still works to approximately one clip per rail (actually N-1 clips for
> N modules). - Peter
>
>
>  Peter T. Parrish, Ph.D., President
> California Solar Engineering, Inc.
> 820 Cynthia Ave., Los Angeles, CA 90065
> CA Lic. 854779, NABCEP Cert. 031806-26
> peter.parr...@calsolareng.com
> Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885
>
>
>
> -Original Message-
> From: re-wrenches-boun...@lists.re-wrenches.org
> [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dave Click
> Sent: Tuesday, November 17, 2009 1:09 PM
> To: RE-wrenches
> Subject: Re: [RE-wrenches] Bonding Rails
>
> Yes, that's correct. In my answer I was just rephrasing it to say you'd
> need twice as many WEEBs as you think. As I understand it, the intent of
> this layout is to give the installer two chances to bond each module
> properly to the rail.
>
> Unirac has a similar requirement for its UGC-1s on SolarMount, but in
> their schematic they don't require you to bond to both rails. So if you
> have four modules, you need UGC-1s between A&B, B&C, C&D but you can
> have them all on a single rail. I think it's better to alternate between
> rails anyway: A&B (top rail), B&C (bottom rail), etc.
>
> DKC
>
>  Original Message 
> Subject: Re: [RE-wrenches] Bonding Rails
> From: Peter Parrish 
> To: 'RE-wrenches' 
> Date: 2009/11/17 15:55
>
> > On page 8 it would appear that we need TWO WEEB clips bonding modules A
> and
> > B to rails #1 and #2 and another TWO WEEB clips bonding modules C and D
> to
> > rails #1 and #2, etc. - Peter
> >
> > -Original Message-
> > From: re-wrenches-boun...@lists.re-wrenches.org
> > [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dave
> Click
> > Sent: Tuesday, November 17, 2009 12:14 PM
> > To: RE-wrenches
> > Subject: Re: [RE-wrenches] Bonding Rails
> >
> > Peter,
> >
> > (1) it appears that per the WEEB installation manual:
> > http://www.we-llc.com/Datasheets/104-0404-08-008.pdf
> > (page 8) you need to have one WEEB per module rather than one for every
> > other module as you suggest.
> >
> > (2) 690.43 Equipment Grounding.
> > Exposed non-current-carrying metal parts of module frames, equipment,
> > and conductor enclosures shall be grounded in accordance with 250.134 or
> > 250.136(A) regardless of voltage.
> >
> > I guess the latter answer depends on whether your AHJ considers the
> > rails "exposed"-- I would, so in this situation I'd have lugs on each
> > module and each rail.
> >
> > DKC
> >
> >  Original Message 
> > Subject: [RE-wrenches] Bonding Rails
> > From: Peter Parrish 
> > To: 'RE-wrenches' 
> > Date: 2009/11/17 14:56
> >
> >> We have been using WEEB clips on all of our installations for over a
> >> year now. We include the WEEB data/installation sheets in our permit
> >> package and patiently point out the clips to inspectors who haven't seen
> >> the WEEB system yet.
> >>
> >>
> >>
> >> Two questions:
> >>
> >>
> >>
> >> (1) For ProSolar rails, can we use one WEEB clip to bond two
> >> adjacent modules (say, modules A and B) on the upper rail (say, rail #1)
> >> and then use a second WEEB clip to bond the next two adjacent modules
> >> (say, modules C and D) on the lower rail (say, rail #2) and then use a
> >> listed lay-in lug (with in our case a WEEB clip) to bond to either rail
> >> #1 or #2 to continue the grounding?
> >>
> >> (2) If we DON"T use WEEB clips and use the conventional bonding
> >> methodology per module manufacturer's instructions (proper location on
> >> the module, and listed screws, washers and nuts), do we have to ALSO
> >> bond the rails? We have an inspector in Pasadena, CA that is requiring
> >> this, but this is the firs

Re: [RE-wrenches] SW 4024 now grid tie

[Mark . Edmunds]

Hi Dana - I will get Nick Klein from our tech support team to contact you 
about this to see if there is anything you can do. Generally an additional 
GTI unit is required to enable the grid-tie capability of the SW series, 
and I think they are pretty hard to find these days.

Cheers,

Mark
_
 


Mark Edmunds  |   Schneider Electric   |  Renewable Energies Business  | 
CANADA  |   Senior Director, Engineering 
Phone: +1-604-422-2609  |   Mobile: +1-604-613-3285 
Email: mark.edmu...@ca.schneider-electric.com  |   Site: www.xantrex.com | 
  Address: 8999 Nelson Way, Burnaby, BC V5A 4B5, CANADA 

*** Please consider the environment before printing this e-mail 




From:
"Dana" 
To:
"'RE-wrenches'" 
Date:
11/17/2009 02:56 PM
Subject:
[RE-wrenches] SW 4024 now grid tie
Sent by:
re-wrenches-boun...@lists.re-wrenches.org



Hey all,
 
I have a client who was off grid and is now grid tied and has [2] Trace SW 
4024 Inverters. I realize the parameters are not the best for high 
efficiency but the client is not into changing out to newer equipment.
 
Whom at which telephone @ Xantrex might be the best bet to talk to for 
programming advice for grid tie application for the SW 4024 inverters?
 
Dana Orzel
 
Great Solar Works, Inc
www.solarwork.com
E - d...@solarwork.com
V - 970.626.5253
F - 970.626.4140
C - 970.209.4076
 
I will be the shift in how the world uses power! - Dana Orzel





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Re: [RE-wrenches] Splice Caps

[Kent Osterberg]

August,

If these are equivalent to the T&B part, they are rated for solid
or stranded wire.  Take a look at page B43 of
http://www-public.tnb.com/contractor/docs/colorkeyed_spec.pdf
Sorry, it's a 14 MB file.

Kent Osterberg
Blue Mountain Solar


August Goers wrote:

  Chris -

We use these Panduit C-taps:

http://pdf.directindustry.com/pdf/panduit/panduit-catalog/12722-23882-_455.html

They work great and the compression tool is relatively inexpensive but there is question about whether they're listed for use with solid wire.

-August

August Goers

Luminalt Energy Corporation
O: 415.564.7652
M: 415.559.1525
F: 650.244.9167

-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Chris Anderson
Sent: Tuesday, November 17, 2009 1:11 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Splice Caps

What economical splice hardware are people using when you don't have two end of a ground wires to land in the Buchanan Splice Caps? Split bolts are mighty expensive

-Chris Anderson
  Chief Technology Officer
  Resources Group 
  C: 603-732-2411
  Borrego Solar Systems

-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Peter Parrish
Sent: Tuesday, November 17, 2009 4:04 PM
To: 'RE-wrenches'
Subject: [RE-wrenches] Splice Caps

We have been using Buchanan brand "splice caps" to splice two to three #10
Cu EGCs inside 3R-rated j-boxes. Is there an approved methodology for
splicing ECGs under PV modules (i.e. exposed to the elements). I understand
that otherwise listed lay-in lugs are not acceptable for double lugging. -
Peter  

 
Peter T. Parrish, Ph.D., President
California Solar Engineering, Inc.
820 Cynthia Ave., Los Angeles, CA 90065
CA Lic. 854779, NABCEP Cert. 031806-26
peter.parr...@calsolareng.com  
Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885

 

-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dave Click
Sent: Tuesday, November 17, 2009 12:14 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Bonding Rails

Peter,

(1) it appears that per the WEEB installation manual:
http://www.we-llc.com/Datasheets/104-0404-08-008.pdf
(page 8) you need to have one WEEB per module rather than one for every 
other module as you suggest.

(2) 690.43 Equipment Grounding.
Exposed non-current-carrying metal parts of module frames, equipment, 
and conductor enclosures shall be grounded in accordance with 250.134 or 
250.136(A) regardless of voltage.

I guess the latter answer depends on whether your AHJ considers the 
rails "exposed"-- I would, so in this situation I'd have lugs on each 
module and each rail.

DKC

 Original Message 
Subject: [RE-wrenches] Bonding Rails
From: Peter Parrish 
To: 'RE-wrenches' 
Date: 2009/11/17 14:56

  
  
We have been using WEEB clips on all of our installations for over a 
year now. We include the WEEB data/installation sheets in our permit 
package and patiently point out the clips to inspectors who haven't seen 
the WEEB system yet.

 

Two questions:

 

(1) For ProSolar rails, can we use one WEEB clip to bond two 
adjacent modules (say, modules A and B) on the upper rail (say, rail #1) 
and then use a second WEEB clip to bond the next two adjacent modules 
(say, modules C and D) on the lower rail (say, rail #2) and then use a 
listed lay-in lug (with in our case a WEEB clip) to bond to either rail 
#1 or #2 to continue the grounding?

(2) If we DON"T use WEEB clips and use the conventional bonding 
methodology per module manufacturer's instructions (proper location on 
the module, and listed screws, washers and nuts), do we have to ALSO 
bond the rails? We have an inspector in Pasadena, CA that is requiring 
this, but this is the first time we have been required to do so. Perhaps 
in the past year in ignorant bliss we have missed an important 
development? Or have we been dodging bullets for seven years and not 
even knowing it?

 

- Peter

Peter T. Parrish, Ph.D., President
California Solar Engineering, Inc.
820 Cynthia Ave., Los Angeles, CA 90065
CA Lic. 854779, NABCEP Cert. 031806-26
peter.parr...@calsolareng.com  
Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 


  
  
  
  
 

 




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  _

[RE-wrenches] SW 4024 now grid tie

[William Korthof]

We have three of the Xantrex/Trace GTI units, with one "still-in-the- 
box-new" from applications that got modified.
They're collecting dust on the shelf...  I'd be more than happy to  
send them to a new home and free up space.


William Korthof
Energy Efficiency Solar/ Acro
(714) 875-3576



  1. Re: SW 4024 now grid tie (mark.edmu...@ca.schneider-electric.com)
--

Message: 1
Date: Tue, 17 Nov 2009 16:16:24 -0800
From: mark.edmu...@ca.schneider-electric.com
To: RE-wrenches 
Subject: Re: [RE-wrenches] SW 4024 now grid tie
Message-ID:
	>


Content-Type: text/plain; charset="us-ascii"

Hi Dana - I will get Nick Klein from our tech support team to  
contact you
about this to see if there is anything you can do. Generally an  
additional
GTI unit is required to enable the grid-tie capability of the SW  
series,

and I think they are pretty hard to find these days.

Cheers,

Mark
_


From:
"Dana" 
To:
"'RE-wrenches'" 
Date:
11/17/2009 02:56 PM
Subject:
[RE-wrenches] SW 4024 now grid tie
Sent by:
re-wrenches-boun...@lists.re-wrenches.org



Hey all,

I have a client who was off grid and is now grid tied and has [2]  
Trace SW

4024 Inverters. I realize the parameters are not the best for high
efficiency but the client is not into changing out to newer equipment.

Whom at which telephone @ Xantrex might be the best bet to talk to for
programming advice for grid tie application for the SW 4024 inverters?

Dana Orzel

Great Solar Works, Inc
www.solarwork.com
E - d...@solarwork.com
V - 970.626.5253
F - 970.626.4140
C - 970.209.4076

I will be the shift in how the world uses power! - Dana Orzel



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[RE-wrenches] SWR2500U Inverter

[Joel Davidson]

Wrenches,

Our customer has 24 each Kyocera KC130 modules and wants to go grid-tied. 
Can he use an SMA SWR2500U inverter with the fan kit? Is there a better 
inverter that will use all of his modules? If you have an SWR2500U or a 
better inverter option for sale, please contact me off-list. Thank you very 
much.


Joel Davidson 


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Re: [RE-wrenches] Splice Caps

[August Goers]

Kent,

Yea, it seems that the T&B parts are rated for #10 through #6 solid wire but 
not if you're splicing #4 or greater. I can't say for sure that the Panduit 
part is the same but I know from experience that the bond is excellent. They 
truly are basically "irreversible" in that you need to cut the wires to remove 
the splice in any reasonable manner.

-August




From: re-wrenches-boun...@lists.re-wrenches.org 
[re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Kent Osterberg 
[k...@coveoregon.com]
Sent: Tuesday, November 17, 2009 4:50 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Splice Caps

August,

If these are equivalent to the T&B part, they are rated for solid or stranded 
wire.  Take a look at page B43 of 
http://www-public.tnb.com/contractor/docs/colorkeyed_spec.pdf
Sorry, it's a 14 MB file.

Kent Osterberg
Blue Mountain Solar


August Goers wrote:

Chris -

We use these Panduit C-taps:

http://pdf.directindustry.com/pdf/panduit/panduit-catalog/12722-23882-_455.html

They work great and the compression tool is relatively inexpensive but there is 
question about whether they're listed for use with solid wire.

-August

August Goers

Luminalt Energy Corporation
O: 415.564.7652
M: 415.559.1525
F: 650.244.9167

-Original Message-
From: 
re-wrenches-boun...@lists.re-wrenches.org
 [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Chris Anderson
Sent: Tuesday, November 17, 2009 1:11 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Splice Caps

What economical splice hardware are people using when you don't have two end of 
a ground wires to land in the Buchanan Splice Caps? Split bolts are mighty 
expensive

-Chris Anderson
  Chief Technology Officer
  Resources Group
  C: 603-732-2411
  Borrego Solar Systems

-Original Message-
From: 
re-wrenches-boun...@lists.re-wrenches.org
 [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Peter Parrish
Sent: Tuesday, November 17, 2009 4:04 PM
To: 'RE-wrenches'
Subject: [RE-wrenches] Splice Caps

We have been using Buchanan brand "splice caps" to splice two to three #10
Cu EGCs inside 3R-rated j-boxes. Is there an approved methodology for
splicing ECGs under PV modules (i.e. exposed to the elements). I understand
that otherwise listed lay-in lugs are not acceptable for double lugging. -
Peter


Peter T. Parrish, Ph.D., President
California Solar Engineering, Inc.
820 Cynthia Ave., Los Angeles, CA 90065
CA Lic. 854779, NABCEP Cert. 031806-26
peter.parr...@calsolareng.com
Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885



-Original Message-
From: 
re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dave Click
Sent: Tuesday, November 17, 2009 12:14 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Bonding Rails

Peter,

(1) it appears that per the WEEB installation manual:
http://www.we-llc.com/Datasheets/104-0404-08-008.pdf
(page 8) you need to have one WEEB per module rather than one for every
other module as you suggest.

(2) 690.43 Equipment Grounding.
Exposed non-current-carrying metal parts of module frames, equipment,
and conductor enclosures shall be grounded in accordance with 250.134 or
250.136(A) regardless of voltage.

I guess the latter answer depends on whether your AHJ considers the
rails "exposed"-- I would, so in this situation I'd have lugs on each
module and each rail.

DKC

 Original Message 
Subject: [RE-wrenches] Bonding Rails
From: Peter Parrish 

To: 'RE-wrenches' 

Date: 2009/11/17 14:56



We have been using WEEB clips on all of our installations for over a
year now. We include the WEEB data/installation sheets in our permit
package and patiently point out the clips to inspectors who haven't seen
the WEEB system yet.



Two questions:



(1) For ProSolar rails, can we use one WEEB clip to bond two
adjacent modules (say, modules A and B) on the upper rail (say, rail #1)
and then use a second WEEB clip to bond the next two adjacent modules
(say, modules C and D) on the lower rail (say, rail #2) and then use a
listed lay-in lug (with in our case a WEEB clip) to bond to either rail
#1 or #2 to continue the grounding?

(2) If we DON"T use WEEB clips and use the conventional bonding
methodology per module manufacturer's instructions (proper location on
the module, and listed screws, washers and nuts), do we have to ALSO
bond the rails? We have an inspector in Pasadena, CA that is requiring
this, but this is the first time we have been required to do so. Perhaps
in the past year in ignorant bliss we have missed an important
development? Or have we been dodging bullets for seven years an

Re: [RE-wrenches] SW 4024 now grid tie

[toddcory]

Here is an old 2001 posting from Bill Brooks...



William, Marco, and Jeff C.,

Here is the method I found to be most effective:

INVERTER SETUP (MENU 9)
set to SELL

BATTERY CHARGING (MENU 10)
set ABSORPTION TIME to 0:00 on both machines.
set MAX CHARGE AMPS to 1 amp on both machines.

BATTERY SELLING (MENU 17)
set MAX SELL AMPS to X amps on both machines. (where 2X is the Max AC amps
that the PV array can produce. (e.g. 4000 Watts should set both to 18
amps --18A*120V=2160Watts)

Both temp comp probes must be installed so as to operate at the same
temperature. I have tried adjusting the float setting and that also works
particularly for an inverter that is out of DC calibration. They still get
out of wack at times at different temperatures because the slope of the temp
comp probes are usually not the same. This should keep both machines selling
as evenly as they can and limit each machine to a maximum of half the AC
Watts output. The one amp MAX charge amps keeps one unit from charging while
the other one sells.

Try it and see how you like it.

Bill.


-Original Message-
From: William Miller [[mailto:wrmil...@slonet.org] mailto:wrmil...@slonet.org]
Sent: Wednesday, September 26, 2001 6:19 PM
To: [mailto:re-wrenc...@topica.com] re-wrenc...@topica.com
Subject: RE: system output honesty [RE-wrenches]


Marco:

I must not have been very clear, but you don't necessarily end up with the
same numeric float voltage setting.  Take the inverter with the lower
output and increase it's float voltage one increment at a time (I think it
adjusts in 0.2 volt increments)  while checking sell amps.  The change
should be immediate and obvious.  (If it doesn't improve, try decreasing
float voltage because my memory may not be accurate.)

William



At 01:09 AM 9/26/01 -1000, you wrote:

>William,
>
>Maybe you have the magic touch with your dual SWs, but my dual SWs are set
>at the same float voltage and, as Bill B. noted, they don't "share" those
>incoming PV electrons very equitably.
>
>On another note, has anyone received an AEI MM5 or MM3 yet?
>
>marco
>ProVision Technologies
>Hilo, land of declining tourism Hawai'i
>
>Friends:
>With dual SW inverters (I believe, if memory serves me right) I finally
>discovered that adjusting the float voltage until they both sell more or
>less equally does the job of balancing.
>William
>
>
>
>
>
>
>At 05:04 PM 9/25/01 -0700, you wrote:

>>Jeff C.,
>>
>>It is less important with a small array, but it still will work slightly
>>better. The much bigger issue with dual inverters in sell mode is that

they

>

>>don't behave nicely with each other (they don't know how to share). One
>>inverter invariably wins the conversion battle and the other inverter sits
>>idle, or more likely, starts drawing power from the grid to fight the

other

>

>>inverter.
>>
>>I have yet to see a dual SW system on the grid the worked really well. You
>>can trick them into working with various settings. I have a set of

settings

>

>>that has worked well for me, others on the list may have their own

methods.

>

>>If people are interested, we can do this onlist. If not, email me and I'll
>>send them offlist.
>>
>>Bill.
>>
>>



__
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SLO Communications: Communications and Power Systems Consulting
PO Box 50, Santa Margarita, CA 93453
Voice :805-438-5600 Fax: 805-438-4607   VMail: 805-546-4875
email: [mailto:wrmil...@slonet.org] wrmil...@slonet.org
License No. C-10-773985
_
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Spreadsheet: Quatro Pro 7
CAD: Microstation 95, DXF, Visio 4.1T
_
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__

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Re: [RE-wrenches] SW 4024 now grid tie

[William Miller]

Friends:

For your SW4024 to connect to a GTI, it needs to be "GTI-ready."   A 
GTI-ready inverter has a second modular connector on the circuit board near 
the AC connections.  This is for the data link to the GTI.  Way back when, 
Xantrex was taking back SW inverters to modify and redeploy.  I doubt 
Xantrex is still willing or able to modify SW inverters.


William Miller



At 05:44 PM 11/17/2009, you wrote:
We have three of the Xantrex/Trace GTI units, with one "still-in-the- 
box-new" from applications that got modified.

They're collecting dust on the shelf...  I'd be more than happy to
send them to a new home and free up space.

William Korthof
Energy Efficiency Solar/ Acro
(714) 875-3576



  1. Re: SW 4024 now grid tie (mark.edmu...@ca.schneider-electric.com)
--

Message: 1
Date: Tue, 17 Nov 2009 16:16:24 -0800
From: mark.edmu...@ca.schneider-electric.com
To: RE-wrenches 
Subject: Re: [RE-wrenches] SW 4024 now grid tie
Message-ID:

>


Content-Type: text/plain; charset="us-ascii"

Hi Dana - I will get Nick Klein from our tech support team to
contact you
about this to see if there is anything you can do. Generally an
additional
GTI unit is required to enable the grid-tie capability of the SW
series,
and I think they are pretty hard to find these days.

Cheers,

Mark
_


From:
"Dana" 
To:
"'RE-wrenches'" 
Date:
11/17/2009 02:56 PM
Subject:
[RE-wrenches] SW 4024 now grid tie
Sent by:
re-wrenches-boun...@lists.re-wrenches.org



Hey all,

I have a client who was off grid and is now grid tied and has [2]
Trace SW
4024 Inverters. I realize the parameters are not the best for high
efficiency but the client is not into changing out to newer equipment.

Whom at which telephone @ Xantrex might be the best bet to talk to for
programming advice for grid tie application for the SW 4024 inverters?

Dana Orzel

Great Solar Works, Inc
www.solarwork.com
E - d...@solarwork.com
V - 970.626.5253
F - 970.626.4140
C - 970.209.4076

I will be the shift in how the world uses power! - Dana Orzel
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Re: [RE-wrenches] SWR2500U Inverter

[Brian Teitelbaum]

Joel,

The SMA SWR2500U inverter has been a long discontinued model. If you want to 
use an SMA inverter, go to the SMA website to use their excellent sizing 
program. Plug in the module, and your record minimum and average maximum temps 
for the site, and look for a current model inverter that will work. All of the 
"U" series inverters (except for the 700U) are discontinued models, and the 
"US" series are the current models.

If your min temp is not below 14⁰F, it looks like you can use all 24 in one 
series string with the 4000US inverter, but that gets you awfully close to 
600VDC (595VDC) at 14⁰F. You might want to play it safe and drop one of the 
modules. Unfortunately, none of the SMA inverters will operate with only 12 
modules in a string (with two strings). However, a Fronius IG-3000 will, so you 
might want to go with that, although it has a lower efficiency.

Brian Teitelbaum
AEE Solar



-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Joel Davidson
Sent: Tuesday, November 17, 2009 4:56 PM
To: RE-wrenches
Subject: [RE-wrenches] SWR2500U Inverter

Wrenches,

Our customer has 24 each Kyocera KC130 modules and wants to go grid-tied.
Can he use an SMA SWR2500U inverter with the fan kit? Is there a better
inverter that will use all of his modules? If you have an SWR2500U or a
better inverter option for sale, please contact me off-list. Thank you very
much.

Joel Davidson

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