[RE-wrenches] Grid Tied Inverter back feed to Generator

Dave Angelini Offgrid Solar offgridsolar at sti.net
Fri Dec 1 10:33:21 PST 2023


A pix may help.  Same for Offgrid with AC coupling. (2 sources)

Dave Angelini Offgrid Solar
"we go where powerlines don't"
    [3]https://offgridsolar1.com/ [4]  [3]
e-mail  offgridsolar at sti.net
text 209 813 0060

On 2023-12-01 8:45 am, Dave Tedeyan via RE-wrenches wrote:

> Jeremy,
> 
> It is my understanding that if the generator wakes up the grid tied 
> inverter and loads are more than the solar then maybe nothing bad would 
> happen. Although I would never do that because you don't have any 
> control over the loads. And if the solar production is more than the 
> loads, then the excess energy feeds back to the generator and can break 
> things. In other words, move the solar interconnection to the line side 
> of the transfer switch so that there is no chance of the generator and 
> solar "seeing" each other.
> 
> Cheers,
> Dave
> 
> On Thu, Nov 30, 2023 at 8:20 PM Jeremy Rodriguez via RE-wrenches 
> <re-wrenches at lists.re-wrenches.org> wrote:
> 
>> Has anyone experienced a grid tie inverter back feed a whole house 
>> backup generator after a utility outage?
>> What can happen ?
>> 
>> Jeremy Rodriguez
>> Solar Installation / Design
>> All Solar, Inc.
>> 1453 M St.
>> Penrose Colorado 81240
>> 
>> Sent by Jeremy's iPhone. Sorry for typos and shorthand.
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> 
> --
> 
> [1]
> 
> Dave Tedeyan, P.E.
> Owner | Sungineer Solar
> 
> p: he | him | his
> a: 1653 Slaterville Rd. | Ithaca, NY 14850
> w: www.sungineersolar.com [2]
> c: (607) 270-0370
> 
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Links:
------
[1] https://www.sungineersolar.com/
[2] http://www.sungineersolar.com/
[3] http://members.sti.net/offgridsolar/
[4] https://offgridsolar1.com/
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