Re: [RE-wrenches] Old Trace SW inverter connected to the grid.

2022-12-19 Thread William Miller via RE-wrenches 
David:

I investigated a grid-connected SW system in 2017. There were no GTI units
in place. The sell function was disabled. The utility reported  that
back-feed was occurring.

Upon further investigation it turns out the SW inverters were selling about
1 amp 24/7. I can’t remember if it was 1 amp each or in total. Of course
this unexpected back-feed is not acceptable. It is possibly the cause of
the utility complaint in this case.

I believe the GTI units were invented to prevent this uncontrollable
back-feed.

I hope this information is helpful.

William Miller

On Mon, Dec 19, 2022 at 7:22 AM David Palumbo via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Wrenches,
>
>
>
> I have been retired from doing solar installs for 10 years now and I am
> reaching out for help as to recommending a solution to an old
> do-it-yourself customers question.
>
> His solar system that was formerly off-grid and is now using grid power
> instead of a back up generator.
>
> He had/has no intention of doing a net-metered system. Just trying to
> reduce dependance on a fossil fuel genset during our mostly sunless Vermont
> winters.
>
>
>
> He says that he brought in power a few years ago to run their expanding
> maple sugaring operation located next to their house. At that time they ran
> a 115Vac circuit (grid power) over to their house and connected grid power
> into AC Hot In terminal #! in their Trace SW 2512. This is correct as I see
> terminal #2 is labeled for generator power.
>
> He has the Trace programmed for float mode  not sell mode.
>
>
>
> Their local utility was working on the line nearby on the main road and
> noticed a small amount of current flowing into the grid and figured out
> where it was coming from. The utility did not immediately shut him down.
> Just told him to correct the problem. He is asking me for advice.
>
>
>
> My first inclination is to separate the grid power completely from the
> inverter power and to feed both power sources into a double pole double
> throw transfer switch. What other options should be considered.
>
>
>
> Thanks in advance and happy holidays,
>
>
>
> Dave Palumbo
>
> Formerly > Independent Power & Light
>
> Hyde Park, VT
>
> 802-371-8678 voice or text
>
>
>
>
> ___
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> --

William Miller
Miller Solar.com
895-438-5600
www.millersolar.com
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Re: [RE-wrenches] Old Trace SW inverter connected to the grid.

2022-12-19 Thread Sindelar Solar via RE-wrenches 
Todd is correct. This solution is simple and works. You'll still want a 
switch or breaker on the input.

Allan

On 12/19/2022 9:13 AM, Todd Cory via RE-wrenches wrote:


If the grid is wired to AC2, then the inverter can charge off off that 
source but not sell to it.

Todd

On Mon, Dec 19, 2022 at 8:21 AM David Palumbo via RE-wrenches
 wrote:

Wrenches,

I have been retired from doing solar installs for 10 years now
and I am reaching out for help as to recommending a solution
to an old do-it-yourself customers question.

His solar system that was formerly off-grid and is now using
grid power instead of a back up generator.

He had/has no intention of doing a net-metered system. Just
trying to reduce dependance on a fossil fuel genset during our
mostly sunless Vermont winters.

He says that he brought in power a few years ago to run their
expanding maple sugaring operation located next to their
house. At that time they ran a 115Vac circuit (grid power)
over to their house and connected grid power into AC Hot In
terminal #! in their Trace SW 2512. This is correct as I see
terminal #2 is labeled for generator power.

He has the Trace programmed for float mode  not sell mode.

Their local utility was working on the line nearby on the main
road and noticed a small amount of current flowing into the
grid and figured out where it was coming from. The utility did
not immediately shut him down. Just told him to correct the
problem. He is asking me for advice.

My first inclination is to separate the grid power completely
from the inverter power and to feed both power sources into a
double pole double throw transfer switch. What other options
should be considered.

Thanks in advance and happy holidays,

Dave Palumbo

Formerly > Independent Power & Light

Hyde Park, VT

802-371-8678 voice or text
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Re: [RE-wrenches] Old Trace SW inverter connected to the grid.

2022-12-19 Thread John Blittersdorf via RE-wrenches 
Todd has the right answer. The AC2 input will not sell to the grid as you
would not want to sell to the generator.

On Mon, Dec 19, 2022 at 12:21 PM Foxfire Energy via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> I’m thinking the simple fix is to just make sure the breaker between the
> grid and inverter is off when you’re running the generator.. JMHO..
>
> Sent from my iPhone
>
> On Dec 19, 2022, at 10:52 AM, Tump via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>  I have neve heard that but I would connect the utility to the AC1 input
> as the window is quite narrow then the grid. The GTI was a piss poor way
> for trace to regulate “sell” current would ramp up & back down all day
> long. NOT necessary. BUT then again that old duffer; SH  probably has more
> brain cells left then I do.
>
> On Dec 19, 2022, at 10:27 AM, Chad Waits via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
> I thought the SW needed a Grid Tie Interface (GTI)
> 
> to keep current from leaking out to the grid even if you didn;t want to
> sell to them...
>
> Chad Waits
> President - Net Zero Solar
> 945 W. Silverlake, Tucson, AZ 85713
> Cell: (520) 270-4873
>
>
>
> On Mon, Dec 19, 2022 at 8:21 AM David Palumbo via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> Wrenches,
>>
>>
>>
>> I have been retired from doing solar installs for 10 years now and I am
>> reaching out for help as to recommending a solution to an old
>> do-it-yourself customers question.
>>
>> His solar system that was formerly off-grid and is now using grid power
>> instead of a back up generator.
>>
>> He had/has no intention of doing a net-metered system. Just trying to
>> reduce dependance on a fossil fuel genset during our mostly sunless Vermont
>> winters.
>>
>>
>>
>> He says that he brought in power a few years ago to run their expanding
>> maple sugaring operation located next to their house. At that time they ran
>> a 115Vac circuit (grid power) over to their house and connected grid power
>> into AC Hot In terminal #! in their Trace SW 2512. This is correct as I see
>> terminal #2 is labeled for generator power.
>>
>> He has the Trace programmed for float mode  not sell mode.
>>
>>
>>
>> Their local utility was working on the line nearby on the main road and
>> noticed a small amount of current flowing into the grid and figured out
>> where it was coming from. The utility did not immediately shut him down.
>> Just told him to correct the problem. He is asking me for advice.
>>
>>
>>
>> My first inclination is to separate the grid power completely from the
>> inverter power and to feed both power sources into a double pole double
>> throw transfer switch. What other options should be considered.
>>
>>
>>
>> Thanks in advance and happy holidays,
>>
>>
>>
>> Dave Palumbo
>>
>> Formerly > Independent Power & Light
>>
>> Hyde Park, VT
>>
>> 802-371-8678 voice or text
>>
>>
>>
>>
>> ___
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Re: [RE-wrenches] Old Trace SW inverter connected to the grid.

2022-12-19 Thread Foxfire Energy via RE-wrenches 
I’m thinking the simple fix is to just make sure the breaker between the grid 
and inverter is off when you’re running the generator.. JMHO..

Sent from my iPhone

On Dec 19, 2022, at 10:52 AM, Tump via RE-wrenches 
 wrote:

 I have neve heard that but I would connect the utility to the AC1 input as 
the window is quite narrow then the grid. The GTI was a piss poor way for trace 
to regulate “sell” current would ramp up & back down all day long. NOT 
necessary. BUT then again that old duffer; SH  probably has more brain cells 
left then I do.
On Dec 19, 2022, at 10:27 AM, Chad Waits via RE-wrenches 
mailto:re-wrenches@lists.re-wrenches.org>> 
wrote:

I thought the SW needed a Grid Tie Interface 
(GTI)
 to keep current from leaking out to the grid even if you didn;t want to sell 
to them...

Chad Waits
President - Net Zero Solar
945 W. Silverlake, Tucson, AZ 85713
Cell: (520) 270-4873
[https://ci3.googleusercontent.com/mail-sig/AIorK4zMcUl5EhjemfzUnd46zPDuJwyFURzd7bNuklolvQ37rwiNtc0YPbqwUUg3S1lnCs0T7PyfxVg]


On Mon, Dec 19, 2022 at 8:21 AM David Palumbo via RE-wrenches 
mailto:re-wrenches@lists.re-wrenches.org>> 
wrote:
Wrenches,

I have been retired from doing solar installs for 10 years now and I am 
reaching out for help as to recommending a solution to an old do-it-yourself 
customers question.
His solar system that was formerly off-grid and is now using grid power instead 
of a back up generator.
He had/has no intention of doing a net-metered system. Just trying to reduce 
dependance on a fossil fuel genset during our mostly sunless Vermont winters.

He says that he brought in power a few years ago to run their expanding maple 
sugaring operation located next to their house. At that time they ran a 115Vac 
circuit (grid power) over to their house and connected grid power into AC Hot 
In terminal #! in their Trace SW 2512. This is correct as I see terminal #2 is 
labeled for generator power.
He has the Trace programmed for float mode  not sell mode.

Their local utility was working on the line nearby on the main road and noticed 
a small amount of current flowing into the grid and figured out where it was 
coming from. The utility did not immediately shut him down. Just told him to 
correct the problem. He is asking me for advice.

My first inclination is to separate the grid power completely from the inverter 
power and to feed both power sources into a double pole double throw transfer 
switch. What other options should be considered.

Thanks in advance and happy holidays,

Dave Palumbo
Formerly > Independent Power & Light
Hyde Park, VT
802-371-8678 voice or text


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Change

Re: [RE-wrenches] Old Trace SW inverter connected to the grid.

2022-12-19 Thread Steve Higgins via RE-wrenches 
The old "Pre-GTI" SWs could still sell... The reason that they
temporarily lost their (Early 2000s) UL Rating, it was found that in the
right conditiones they could "Leak" Current/Voltage when connected to the
grid.   Moving the Grid input to the Gen (AC2) input should prevent it from
being able to sell.


Steve Higgins.

On Mon, Dec 19, 2022 at 8:30 AM Jay via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> The older versions of the SW didnt have the GTI plug or need it.
>
> What I find curious is what was said about the lineman that they measured
> current.
> If the lines were off, no way that inverter could power it up or even the
> transformer.
>
> I’d recommend checking current just to confirm what’s going on.
>
> Jay
>
>
>
> On Dec 19, 2022, at 9:18 AM, Steve Higgins via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
> 
> Great Point, Todd... Todd is correct. Wire the Utility to the AC2 Input
> (Generator), and it won't be able to sell at all.
>
> Steve Higgins.
>
>
>
>
> On Mon, Dec 19, 2022 at 8:14 AM Todd Cory via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> If the grid is wired to AC2, then the inverter can charge off off that
>> source but not sell to it.
>>
>> Todd
>>
>>
>>
>>
>>
>>
>>
>> On Monday, December 19, 2022 7:50am, "Tump via RE-wrenches" <
>> re-wrenches@lists.re-wrenches.org> said:
>>
>> I have neve heard that but I would connect the utility to the AC1 input
>> as the window is quite narrow then the grid. The GTI was a piss poor way
>> for trace to regulate “sell” current would ramp up & back down all day
>> long. NOT necessary. BUT then again that old duffer; SH  probably has more
>> brain cells left then I do.
>>
>> On Dec 19, 2022, at 10:27 AM, Chad Waits via RE-wrenches <
>> re-wrenches@lists.re-wrenches.org> wrote:
>> I thought the SW needed a Grid Tie Interface (GTI)
>> 
>> to keep current from leaking out to the grid even if you didn;t want to
>> sell to them...
>> Chad Waits
>> President - Net Zero Solar
>> 945 W. Silverlake, Tucson, AZ 85713
>> Cell: (520) 270-4873
>>
>> On Mon, Dec 19, 2022 at 8:21 AM David Palumbo via RE-wrenches <
>> re-wrenches@lists.re-wrenches.org> wrote:
>>
>>> Wrenches,
>>>
>>>
>>>
>>> I have been retired from doing solar installs for 10 years now and I am
>>> reaching out for help as to recommending a solution to an old
>>> do-it-yourself customers question.
>>>
>>> His solar system that was formerly off-grid and is now using grid power
>>> instead of a back up generator.
>>>
>>> He had/has no intention of doing a net-metered system. Just trying to
>>> reduce dependance on a fossil fuel genset during our mostly sunless Vermont
>>> winters.
>>>
>>>
>>>
>>> He says that he brought in power a few years ago to run their expanding
>>> maple sugaring operation located next to their house. At that time they ran
>>> a 115Vac circuit (grid power) over to their house and connected grid power
>>> into AC Hot In terminal #! in their Trace SW 2512. This is correct as I see
>>> terminal #2 is labeled for generator power.
>>>
>>> He has the Trace programmed for float mode  not sell mode.
>>>
>>>
>>>
>>> Their local utility was working on the line nearby on the main road and
>>> noticed a small amount of current flowing into the grid and figured out
>>> where it was coming from. The utility did not immediately shut him down.
>>> Just told him to correct the problem. He is asking me for advice.
>>>
>>>
>>>
>>> My first inclination is to separate the grid power completely from the
>>> inverter power and to feed both power sources into a double pole double
>>> throw transfer switch. What other options should be considered.
>>>
>>>
>>>
>>> Thanks in advance and happy holidays,
>>>
>>>
>>>
>>> Dave Palumbo
>>>
>>> Formerly > Independent Power & Light
>>>
>>> Hyde Park, VT
>>>
>>> 802-371-8678 voice or text
>>>
>>>
>>>
>>>
>>> ___
>>> List sponsored by Redwood Alliance
>>>
>>> Pay optional member dues here: http://re-wrenches.org
>>>
>>> List Address: RE-wrenches@lists.re-wrenches.org
>>>
>>> Change listserver email address & settings:
>>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>>>
>>> There are two list archives for searching. When one doesn't work, try
>>> the other:
>>> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
>>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>>>
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>>> http://www.re-wrenches.org/etiquette.htm
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>>> http://www.members.re-wrenches.org
>>>
>>> ___
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Re: [RE-wrenches] Old Trace SW inverter connected to the grid.

2022-12-19 Thread Jay via RE-wrenches 
The older versions of the SW didnt have the GTI plug or need it. What I find curious is what was said about the lineman that they measured current. If the lines were off, no way that inverter could power it up or even the transformer. I’d recommend checking current just to confirm what’s going on. JayOn Dec 19, 2022, at 9:18 AM, Steve Higgins via RE-wrenches  wrote:Great Point, Todd... Todd is correct. Wire the Utility to the AC2 Input (Generator), and it won't be able to sell at all. Steve Higgins. On Mon, Dec 19, 2022 at 8:14 AM Todd Cory via RE-wrenches  wrote:If the grid is wired to AC2, then the inverter can charge off off that source but not sell to it.Todd
 
 

On Monday, December 19, 2022 7:50am, "Tump via RE-wrenches"  said:
I have neve heard that but I would connect the utility to the AC1 input as the window is quite narrow then the grid. The GTI was a piss poor way for trace to regulate “sell” current would ramp up & back down all day long. NOT necessary. BUT then again that old duffer; SH  probably has more brain cells left then I do.  


On Dec 19, 2022, at 10:27 AM, Chad Waits via RE-wrenches  wrote:







I thought the SW needed a Grid Tie Interface (GTI) to keep current from leaking out to the grid even if you didn;t want to sell to them...
Chad WaitsPresident - Net Zero Solar
945 W. Silverlake, Tucson, AZ 85713
Cell: (520) 270-4873









On Mon, Dec 19, 2022 at 8:21 AM David Palumbo via RE-wrenches  wrote:




Wrenches,
 
I have been retired from doing solar installs for 10 years now and I am reaching out for help as to recommending a solution to an old do-it-yourself customers question.
His solar system that was formerly off-grid and is now using grid power instead of a back up generator. 
He had/has no intention of doing a net-metered system. Just trying to reduce dependance on a fossil fuel genset during our mostly sunless Vermont winters. 
 
He says that he brought in power a few years ago to run their expanding maple sugaring operation located next to their house. At that time they ran a 115Vac circuit (grid power) over to their house and connected grid power into AC Hot In terminal #! in their Trace SW 2512. This is correct as I see terminal #2 is labeled for generator power. 
He has the Trace programmed for float mode  not sell mode.
 
Their local utility was working on the line nearby on the main road and noticed a small amount of current flowing into the grid and figured out where it was coming from. The utility did not immediately shut him down. Just told him to correct the problem. He is asking me for advice.
 
My first inclination is to separate the grid power completely from the inverter power and to feed both power sources into a double pole double throw transfer switch. What other options should be considered. 
 
Thanks in advance and happy holidays,
 
Dave Palumbo
Formerly > Independent Power & Light
Hyde Park, VT
802-371-8678 voice or text
 
 


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Re: [RE-wrenches] Old Trace SW inverter connected to the grid.

2022-12-19 Thread Steve Higgins via RE-wrenches 
Great Point, Todd... Todd is correct. Wire the Utility to the AC2 Input
(Generator), and it won't be able to sell at all.

Steve Higgins.




On Mon, Dec 19, 2022 at 8:14 AM Todd Cory via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> If the grid is wired to AC2, then the inverter can charge off off that
> source but not sell to it.
>
> Todd
>
>
>
>
>
>
>
> On Monday, December 19, 2022 7:50am, "Tump via RE-wrenches" <
> re-wrenches@lists.re-wrenches.org> said:
>
> I have neve heard that but I would connect the utility to the AC1 input as
> the window is quite narrow then the grid. The GTI was a piss poor way for
> trace to regulate “sell” current would ramp up & back down all day long.
> NOT necessary. BUT then again that old duffer; SH  probably has more brain
> cells left then I do.
>
> On Dec 19, 2022, at 10:27 AM, Chad Waits via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
> I thought the SW needed a Grid Tie Interface (GTI)
> 
> to keep current from leaking out to the grid even if you didn;t want to
> sell to them...
> Chad Waits
> President - Net Zero Solar
> 945 W. Silverlake, Tucson, AZ 85713
> Cell: (520) 270-4873
>
> On Mon, Dec 19, 2022 at 8:21 AM David Palumbo via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> Wrenches,
>>
>>
>>
>> I have been retired from doing solar installs for 10 years now and I am
>> reaching out for help as to recommending a solution to an old
>> do-it-yourself customers question.
>>
>> His solar system that was formerly off-grid and is now using grid power
>> instead of a back up generator.
>>
>> He had/has no intention of doing a net-metered system. Just trying to
>> reduce dependance on a fossil fuel genset during our mostly sunless Vermont
>> winters.
>>
>>
>>
>> He says that he brought in power a few years ago to run their expanding
>> maple sugaring operation located next to their house. At that time they ran
>> a 115Vac circuit (grid power) over to their house and connected grid power
>> into AC Hot In terminal #! in their Trace SW 2512. This is correct as I see
>> terminal #2 is labeled for generator power.
>>
>> He has the Trace programmed for float mode  not sell mode.
>>
>>
>>
>> Their local utility was working on the line nearby on the main road and
>> noticed a small amount of current flowing into the grid and figured out
>> where it was coming from. The utility did not immediately shut him down.
>> Just told him to correct the problem. He is asking me for advice.
>>
>>
>>
>> My first inclination is to separate the grid power completely from the
>> inverter power and to feed both power sources into a double pole double
>> throw transfer switch. What other options should be considered.
>>
>>
>>
>> Thanks in advance and happy holidays,
>>
>>
>>
>> Dave Palumbo
>>
>> Formerly > Independent Power & Light
>>
>> Hyde Park, VT
>>
>> 802-371-8678 voice or text
>>
>>
>>
>>
>> ___
>> List sponsored by Redwood Alliance
>>
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>>
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>>
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>>
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> Solarwinds Northernlights
> *   Serving Mid Coast Maine & Northern California*
> * 207-832-7574   Cl.
> 610-517-8401  *
>   *Blair "TUMP" May*
>
>
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Re: [RE-wrenches] Old Trace SW inverter connected to the grid.

2022-12-19 Thread Todd Cory via RE-wrenches 

If the grid is wired to AC2, then the inverter can charge off off that source 
but not sell to it.

Todd
 
 


On Monday, December 19, 2022 7:50am, "Tump via RE-wrenches" 
 said:


I have neve heard that but I would connect the utility to the AC1 input as the 
window is quite narrow then the grid. The GTI was a piss poor way for trace to 
regulate “sell” current would ramp up & back down all day long. NOT necessary. 
BUT then again that old duffer; SH  probably has more brain cells left then I 
do.  

On Dec 19, 2022, at 10:27 AM, Chad Waits via RE-wrenches <[ 
re-wrenches@lists.re-wrenches.org ]( mailto:re-wrenches@lists.re-wrenches.org 
)> wrote:







I thought the SW needed a [ Grid Tie Interface (GTI) ]( 
https://www.altestore.com/store/media/pdfs/xantrex/Grid%20Tie%20Interface%20(GTI)%20Data%20Sheet.pdf
 ) to keep current from leaking out to the grid even if you didn;t want to sell 
to them...
Chad WaitsPresident - Net Zero Solar
945 W. Silverlake, Tucson, AZ 85713
Cell: (520) 270-4873


On Mon, Dec 19, 2022 at 8:21 AM David Palumbo via RE-wrenches <[ 
re-wrenches@lists.re-wrenches.org ]( mailto:re-wrenches@lists.re-wrenches.org 
)> wrote:



Wrenches,
 
I have been retired from doing solar installs for 10 years now and I am 
reaching out for help as to recommending a solution to an old do-it-yourself 
customers question.
His solar system that was formerly off-grid and is now using grid power instead 
of a back up generator. 
He had/has no intention of doing a net-metered system. Just trying to reduce 
dependance on a fossil fuel genset during our mostly sunless Vermont winters. 
 
He says that he brought in power a few years ago to run their expanding maple 
sugaring operation located next to their house. At that time they ran a 115Vac 
circuit (grid power) over to their house and connected grid power into AC Hot 
In terminal #! in their Trace SW 2512. This is correct as I see terminal #2 is 
labeled for generator power. 
He has the Trace programmed for float mode  not sell mode.
 
Their local utility was working on the line nearby on the main road and noticed 
a small amount of current flowing into the grid and figured out where it was 
coming from. The utility did not immediately shut him down. Just told him to 
correct the problem. He is asking me for advice.
 
My first inclination is to separate the grid power completely from the inverter 
power and to feed both power sources into a double pole double throw transfer 
switch. What other options should be considered. 
 
Thanks in advance and happy holidays,
 
Dave Palumbo
Formerly > Independent Power & Light
Hyde Park, VT
802-371-8678 voice or text
 
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[ Tump ]( 
blocked::mailto:t...@swnl.net%22%20%5Co%20%22blocked::mailto:t...@swnl.net )[ 
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blocked::http://www.swnl.net/%22%20%5Co%20%22blocked::http://www.swnl.net/ )



Solarwinds Northernlights   
   Serving Mid Coast Maine & Northern California 
207-832-7574   Cl. 610-517-8401  
  Blair "TUMP" May

Re: [RE-wrenches] Old Trace SW inverter connected to the grid.

2022-12-19 Thread Tump via RE-wrenches 
I have neve heard that but I would connect the utility to the AC1 input as the 
window is quite narrow then the grid. The GTI was a piss poor way for trace to 
regulate “sell” current would ramp up & back down all day long. NOT necessary. 
BUT then again that old duffer; SH  probably has more brain cells left then I 
do.  
> On Dec 19, 2022, at 10:27 AM, Chad Waits via RE-wrenches 
>  wrote:
> 
> I thought the SW needed a Grid Tie Interface (GTI) 
> 
>  to keep current from leaking out to the grid even if you didn;t want to sell 
> to them...
> 
> Chad Waits
> President - Net Zero Solar
> 945 W. Silverlake, Tucson, AZ 85713
> Cell: (520) 270-4873
> 
> 
> 
> On Mon, Dec 19, 2022 at 8:21 AM David Palumbo via RE-wrenches 
>  > wrote:
> Wrenches,
> 
>  
> 
> I have been retired from doing solar installs for 10 years now and I am 
> reaching out for help as to recommending a solution to an old do-it-yourself 
> customers question.
> 
> His solar system that was formerly off-grid and is now using grid power 
> instead of a back up generator.
> 
> He had/has no intention of doing a net-metered system. Just trying to reduce 
> dependance on a fossil fuel genset during our mostly sunless Vermont winters.
> 
>  
> 
> He says that he brought in power a few years ago to run their expanding maple 
> sugaring operation located next to their house. At that time they ran a 
> 115Vac circuit (grid power) over to their house and connected grid power into 
> AC Hot In terminal #! in their Trace SW 2512. This is correct as I see 
> terminal #2 is labeled for generator power.
> 
> He has the Trace programmed for float mode  not sell mode.
> 
>  
> 
> Their local utility was working on the line nearby on the main road and 
> noticed a small amount of current flowing into the grid and figured out where 
> it was coming from. The utility did not immediately shut him down. Just told 
> him to correct the problem. He is asking me for advice.
> 
>  
> 
> My first inclination is to separate the grid power completely from the 
> inverter power and to feed both power sources into a double pole double throw 
> transfer switch. What other options should be considered.
> 
>  
> 
> Thanks in advance and happy holidays,
> 
>  
> 
> Dave Palumbo
> 
> Formerly > Independent Power & Light
> 
> Hyde Park, VT
> 
> 802-371-8678 voice or text
> 
>  
> 
>  
> 
> ___
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> 
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> Tump 
> mailto:t...@swnl.net%22%20%5Co%20%22blocked::mailto:t...@swnl.net>3...@gmail.com
>www.SWNL.net 
> http://www.swnl.net/%22%20%5Co%20%22blocked::http://www.swnl.net/>
> Solarwinds Northernlights   
>Serving Mid Coast Maine & Northern California
>  207-832-7574   Cl. 610-517-8401  
> 
>   Blair "TUMP" May
>  MAINE'S CHARTER 
>   NABCEP"Certified PV Installer" 
>
>     MAINE'S CHARTER 
>   Trace Xantrex "Certified" Dealer / Installer"
> 



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Re: [RE-wrenches] Old Trace SW inverter connected to the grid.

2022-12-19 Thread Steve Higgins via RE-wrenches 
It sounds to me like Sell Mode is Enabled without the GTI...  But it's been
a long time since I played with an SW and GTI...

Steve Higgins


On Mon, Dec 19, 2022 at 7:29 AM Chad Waits via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> I thought the SW needed a Grid Tie Interface (GTI)
> 
> to keep current from leaking out to the grid even if you didn;t want to
> sell to them...
>
> Chad Waits
> President - Net Zero Solar
> 945 W. Silverlake, Tucson, AZ 85713
> Cell: (520) 270-4873
>
>
>
> On Mon, Dec 19, 2022 at 8:21 AM David Palumbo via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> Wrenches,
>>
>>
>>
>> I have been retired from doing solar installs for 10 years now and I am
>> reaching out for help as to recommending a solution to an old
>> do-it-yourself customers question.
>>
>> His solar system that was formerly off-grid and is now using grid power
>> instead of a back up generator.
>>
>> He had/has no intention of doing a net-metered system. Just trying to
>> reduce dependance on a fossil fuel genset during our mostly sunless Vermont
>> winters.
>>
>>
>>
>> He says that he brought in power a few years ago to run their expanding
>> maple sugaring operation located next to their house. At that time they ran
>> a 115Vac circuit (grid power) over to their house and connected grid power
>> into AC Hot In terminal #! in their Trace SW 2512. This is correct as I see
>> terminal #2 is labeled for generator power.
>>
>> He has the Trace programmed for float mode  not sell mode.
>>
>>
>>
>> Their local utility was working on the line nearby on the main road and
>> noticed a small amount of current flowing into the grid and figured out
>> where it was coming from. The utility did not immediately shut him down.
>> Just told him to correct the problem. He is asking me for advice.
>>
>>
>>
>> My first inclination is to separate the grid power completely from the
>> inverter power and to feed both power sources into a double pole double
>> throw transfer switch. What other options should be considered.
>>
>>
>>
>> Thanks in advance and happy holidays,
>>
>>
>>
>> Dave Palumbo
>>
>> Formerly > Independent Power & Light
>>
>> Hyde Park, VT
>>
>> 802-371-8678 voice or text
>>
>>
>>
>>
>> ___
>> List sponsored by Redwood Alliance
>>
>> Pay optional member dues here: http://re-wrenches.org
>>
>> List Address: RE-wrenches@lists.re-wrenches.org
>>
>> Change listserver email address & settings:
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Re: [RE-wrenches] Old Trace SW inverter connected to the grid.

2022-12-19 Thread Chad Waits via RE-wrenches 
I thought the SW needed a Grid Tie Interface (GTI)

to keep current from leaking out to the grid even if you didn;t want to
sell to them...

Chad Waits
President - Net Zero Solar
945 W. Silverlake, Tucson, AZ 85713
Cell: (520) 270-4873



On Mon, Dec 19, 2022 at 8:21 AM David Palumbo via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Wrenches,
>
>
>
> I have been retired from doing solar installs for 10 years now and I am
> reaching out for help as to recommending a solution to an old
> do-it-yourself customers question.
>
> His solar system that was formerly off-grid and is now using grid power
> instead of a back up generator.
>
> He had/has no intention of doing a net-metered system. Just trying to
> reduce dependance on a fossil fuel genset during our mostly sunless Vermont
> winters.
>
>
>
> He says that he brought in power a few years ago to run their expanding
> maple sugaring operation located next to their house. At that time they ran
> a 115Vac circuit (grid power) over to their house and connected grid power
> into AC Hot In terminal #! in their Trace SW 2512. This is correct as I see
> terminal #2 is labeled for generator power.
>
> He has the Trace programmed for float mode  not sell mode.
>
>
>
> Their local utility was working on the line nearby on the main road and
> noticed a small amount of current flowing into the grid and figured out
> where it was coming from. The utility did not immediately shut him down.
> Just told him to correct the problem. He is asking me for advice.
>
>
>
> My first inclination is to separate the grid power completely from the
> inverter power and to feed both power sources into a double pole double
> throw transfer switch. What other options should be considered.
>
>
>
> Thanks in advance and happy holidays,
>
>
>
> Dave Palumbo
>
> Formerly > Independent Power & Light
>
> Hyde Park, VT
>
> 802-371-8678 voice or text
>
>
>
>
> ___
> List sponsored by Redwood Alliance
>
> Pay optional member dues here: http://re-wrenches.org
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[RE-wrenches] Old Trace SW inverter connected to the grid.

2022-12-19 Thread David Palumbo via RE-wrenches 
Wrenches,

 

I have been retired from doing solar installs for 10 years now and I am
reaching out for help as to recommending a solution to an old do-it-yourself
customers question.

His solar system that was formerly off-grid and is now using grid power
instead of a back up generator. 

He had/has no intention of doing a net-metered system. Just trying to reduce
dependance on a fossil fuel genset during our mostly sunless Vermont
winters. 

 

He says that he brought in power a few years ago to run their expanding
maple sugaring operation located next to their house. At that time they ran
a 115Vac circuit (grid power) over to their house and connected grid power
into AC Hot In terminal #! in their Trace SW 2512. This is correct as I see
terminal #2 is labeled for generator power. 

He has the Trace programmed for float mode  not sell mode.

 

Their local utility was working on the line nearby on the main road and
noticed a small amount of current flowing into the grid and figured out
where it was coming from. The utility did not immediately shut him down.
Just told him to correct the problem. He is asking me for advice.

 

My first inclination is to separate the grid power completely from the
inverter power and to feed both power sources into a double pole double
throw transfer switch. What other options should be considered. 

 

Thanks in advance and happy holidays,

 

Dave Palumbo

Formerly > Independent Power & Light

Hyde Park, VT

802-371-8678 voice or text

 

 

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