Re: [RE-wrenches] Bi-Directional / Netmetering question

2018-08-15 Thread frenergy 

Jason,

            I'm so glad you brought this up, I'm having a very similar 
issue backfeeding a utility (PG&E) meter that we recently started 
backfeeding  on a small commercial job.  Somewhat unique in that its 
208/120 SINGLE phase (L-L-N).  The inverters are pushing about 3,000 
KWhrs/month to the grid, way more than typical July consumption at this 
site  but their billing shows modest consumption.


Bill

Feather River Solar Electric
Bill Battagin, Owner
4291 Nelson St.
Taylorsville, CA 95983
530.284.7849
CA Lic 874049
www.frenergy.net

On 8/15/2018 4:01 PM, Jason Szumlanski wrote:
Is it possible for a utility meter to be programmed/wired backward? I 
have a client on an Enphase system with production and consumption 
monitoring, and the Enphase monitoring is showing solar production 
exceeded consumption by 400 kWh for a billing period. However, the 
meter is reading almost exactly the opposite. It seems too coincidental.


I'm going to go out to the site tomorrow to shut down all of the loads 
and see what happens when solar is only backfeeding the meter, but I'm 
curious how the meters are "programmed" or set up to work.


Note that the meter was zeroed to start and the initial billing period 
readings show DEL exceeded REC by 400 kWh, which matches what was 
billed (net usage of positive 400 kWh).


Jason Szumlanski


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Re: [RE-wrenches] Bi-Directional / Netmetering question

2018-08-15 Thread AE Solar 
The Enphase CTs are directional. There is an arrow on them. I believe it’s
supposed to point towards the load side for both consumption and production
but not positive off the top of my head.

On Wed, Aug 15, 2018 at 7:10 PM Kirpal  wrote:

> Jason...not sure about the Enphase consumption monitoring, if it is done
> with CT's confirm that your CT's are facing the right direction.  Some CT's
> are directional and perhaps your consumption monitoring could be backwards
> instead of the utility meter wiring backwards.Seems like the utility
> would have noticed incorrect wiring in their can.
> We use the E Gauge CT clamps for some monitoring and they are
> directional.  I am not familiar with the Enphase versions.
>
>
> Sunny Regards,
> Kirpal Khalsa
> Oregon LRT#25
> NABCEP Certified PV Installation Professional
> Oregon Solarworks LLC
> www.oregonsolarworks.com
> 541-299-0402
>
> On Wed, Aug 15, 2018 at 4:01 PM, Jason Szumlanski <
> ja...@floridasolardesigngroup.com> wrote:
>
>> Is it possible for a utility meter to be programmed/wired backward? I
>> have a client on an Enphase system with production and consumption
>> monitoring, and the Enphase monitoring is showing solar production exceeded
>> consumption by 400 kWh for a billing period. However, the meter is reading
>> almost exactly the opposite. It seems too coincidental.
>>
>> I'm going to go out to the site tomorrow to shut down all of the loads
>> and see what happens when solar is only backfeeding the meter, but I'm
>> curious how the meters are "programmed" or set up to work.
>>
>> Note that the meter was zeroed to start and the initial billing period
>> readings show DEL exceeded REC by 400 kWh, which matches what was billed
>> (net usage of positive 400 kWh).
>>
>> Jason Szumlanski
>>
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> --
Adam Katzman
Autonomous Energies
PO Box 1245
Kingston, NY 12402
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(518) 567-1468
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Re: [RE-wrenches] Bi-Directional / Netmetering question

2018-08-15 Thread Kirpal 
Jason...not sure about the Enphase consumption monitoring, if it is done
with CT's confirm that your CT's are facing the right direction.  Some CT's
are directional and perhaps your consumption monitoring could be backwards
instead of the utility meter wiring backwards.Seems like the utility
would have noticed incorrect wiring in their can.
We use the E Gauge CT clamps for some monitoring and they are directional.
I am not familiar with the Enphase versions.


Sunny Regards,
Kirpal Khalsa
Oregon LRT#25
NABCEP Certified PV Installation Professional
Oregon Solarworks LLC
www.oregonsolarworks.com
541-299-0402

On Wed, Aug 15, 2018 at 4:01 PM, Jason Szumlanski <
ja...@floridasolardesigngroup.com> wrote:

> Is it possible for a utility meter to be programmed/wired backward? I have
> a client on an Enphase system with production and consumption monitoring,
> and the Enphase monitoring is showing solar production exceeded consumption
> by 400 kWh for a billing period. However, the meter is reading almost
> exactly the opposite. It seems too coincidental.
>
> I'm going to go out to the site tomorrow to shut down all of the loads and
> see what happens when solar is only backfeeding the meter, but I'm curious
> how the meters are "programmed" or set up to work.
>
> Note that the meter was zeroed to start and the initial billing period
> readings show DEL exceeded REC by 400 kWh, which matches what was billed
> (net usage of positive 400 kWh).
>
> Jason Szumlanski
>
> ___
> List sponsored by Redwood Alliance
>
> List Address: RE-wrenches@lists.re-wrenches.org
>
> Change listserver email address & settings:
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> org/maillist.html
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> www.members.re-wrenches.org
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>
>
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[RE-wrenches] Bi-Directional / Netmetering question

2018-08-15 Thread Jason Szumlanski 
Is it possible for a utility meter to be programmed/wired backward? I have
a client on an Enphase system with production and consumption monitoring,
and the Enphase monitoring is showing solar production exceeded consumption
by 400 kWh for a billing period. However, the meter is reading almost
exactly the opposite. It seems too coincidental.

I'm going to go out to the site tomorrow to shut down all of the loads and
see what happens when solar is only backfeeding the meter, but I'm curious
how the meters are "programmed" or set up to work.

Note that the meter was zeroed to start and the initial billing period
readings show DEL exceeded REC by 400 kWh, which matches what was billed
(net usage of positive 400 kWh).

Jason Szumlanski
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[RE-wrenches] Fwd: Re: Re: Cell Cracks

2018-08-15 Thread Ray 
I'm forwarding this for the Wrench that experienced the microcracks.  
Very interesting. I appreciate everyone's comments so far.


Ray Walters


 Forwarded Message 
Subject:Re: Re: [RE-wrenches] Cell Cracks
Date:   Wed, 15 Aug 2018 07:28:59 -0600
From:   Stephen Bures 
To: Ray 



Well they look different than the pictures in the article of mocrocracks 
but that may be because the cause of these was hail impacts and not a 
manufacturing or shipping thing.
The reason I think that they were caused by hail is because the dirt on 
the top of the glass was smudged in the center of each crack.
These may essentially be the same thing as microcracks and cause an 
issue over time.


*Stephen A. Bures *l *Principal*
Sun Integrated Design
*970-980-3882*


*/"Quote me as saying I was misquoted"/*

*-Groucho Marx*

On Tue, Aug 14, 2018 at 8:34 PM, Ray > wrote:
















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