[RE-wrenches] Sol-Ark 12k w/ Generac Transfer Switch

[Jason Szumlanski]

I have the same question. I assumed an ATS would transfer upon utility
loss, but I'm learning that some do not transfer until the generator starts
up. I'm wondering how this works with Sol-Arks given their schematics that
use ATS in multi-inverter setups for whole home backup (with no generator
involved).

Jason Szumlanski

On Thu, Jun 17, 2021, 9:48 AM Dave Tedeyan <dave at sungineersolar.com> wrote:

> Hi Rick,
> I have a similar situation with a GE transfer switch, but am curious to
> hear what others have to say. My assumption was that the switch transfers
> based on loss of 240V from the grid. But I believe (at least with the GE
> generator) that the transfer switch sends a two wire start signal to the
> inverter when the transfer switch loses the 240V signal. My plan was to
> rewire that start signal to the Sol-Ark inverter, but keep the transfer
> switch as the main service point to prevent any kind of backfeeding to the
> grid.
> Cheers,
> Dave
>
> On Thu, Jun 17, 2021 at 9:41 AM rick at solshineenergy.com <
> rick at solshineenergy.com> wrote:
>
>> Wrenches,
>>
>> I’m looking to tie in a Generac Powerpact 7.5kW generator with transfer
>> switch to a Sol-Ark 12kW. The Sol-Ark has a two wire start (NO or NC)
>> capability, however, the Generac transfer switch operates on loss of 240V.
>> Is my only option to use a relay driven by the two wire start to drop 240V
>> to the transfer switch?
>>
>> Thank you,
>>
>> rick brown
>> SolShine Energy Alternatives, LLC
>> Electrical & Solar Contracting Services
>> www.SolShineEnergy.com
>> Check, Virginia 24072
>> Office: 540.235.3095
>> Mobile: 540.808.9502
>>
>> VA Class A Contractor Lic# 2705147660
>> VA Master Electrician Lic# 2710062762
>> VA Alternative Energy Systems Installer
>> NABCEP Certified PV Installation Professional 110112-21
>>
>>
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>
> --
> *Dave Tedeyan, PE*
> [image: Sungineer Solar]
> 1653 Slaterville Road, Ithaca, NY 14850
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