[RE-wrenches] Generator and AC coupling on a Sol-Ark

[Drake]

P.S. The contactor method is even mentioned somewhere in the Outback 
literature. I've been using it for years. It is very simple and 
requires no complex equipment. It will not interfere with rapid 
shutdown. 40 A, 240 V contactors with 240 V coils are readily 
available and not terribly expensive. The 240 V output of the 
generator circuit provides the signal.

At 10:02 AM 5/4/2021, you wrote:
>Get a contactor with a 240 VAC coil. Connect the coil wire wires to 
>the 240 V output circuit of the generator, so when the generator 
>comes on, the contactor opens. Run the current from the AC coupled 
>Enphase inverters through the contacts from common to N/C.
>
>---
>
>
>
>On 2021-05-03 10:26, Dave Tedeyan wrote:
>>Hi All,
>>
>>I am planning on using a Sol-Ark for the first time for adding 
>>battery backup to an existing system. It is Enphase, so clearly it 
>>will be AC coupled, and there is a whole house generator. When I 
>>talked to Sol-Ark about it, they recommended putting the generator 
>>on a time of use schedule to not allow it to come on during the day 
>>so that we don't run into the issue of the solar backfeeding the generator.
>>
>>I was wondering though if anyone has just used a contactor to cut 
>>out the solar when the generator turns on? Something like Outback's 
>>GS-AC-Gen-Kit, although in this case I will need something rated 
>>for just over 30A. This seems like a better way to allow the 
>>generator to run at any time it is needed, especially if it is a 
>>gloomy, snowy, winter day.
>>
>>Cheers,
>>Dave
>>
>>--
>>Dave Tedeyan, PE
>>Sungineer Solar
>>
>>1653 Slaterville Road, Ithaca, NY 14850
>>Cell: 607-288-2898
>><http://www.sungineersolar.com/>www.sungineersolar.com
>>
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