[RE-wrenches] Head scratcher

[Kristopher Schmid]

That makes sense, Matt.  Thanks.  I was missing the easier solution.


Shine On!

Kris Schmid
Legacy Solar, LLC
137 West 1st Avenue
Luck, WI 54853
www.legacysolar.com
715-653-4295
NABCEP Certified PV Installation Professional
Licensed Wisconsin Master Electrician
BSEE


On Tue, Oct 18, 2022 at 1:05 PM Matt Sherald via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Hi Kris,
>
> I think you want the "shore power" to feed into a 240V load center on the
> tiny home.  You might have to add this panel as part of the power inlet
> equipment.  I'd feed the minisplit off this 240V panel and subfeed 120V to
> the AC IN on the inverter.  In turn, the inverter can supply a load center
> with 120V ONLY circuits.
>
> -Matt
>
>
>
>
>
> On Tue, Oct 18, 2022 at 1:30 PM Kristopher Schmid via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
>> Hi All,
>>
>> I am hoping that someone on the list can help me think this one through.
>>
>> I have a client that builds tiny portable homes.  He is working on one
>> where his client supplied the solar modules, charge controller, batteries,
>> inverter, etc.  They bought them through some dot com.  The tiny home has a
>> 240 volt mini split that they want to use when plugged into the grid.  The
>> inverter that they bought is a 120 volt.  The inverter is not grid tied,
>> but does have a 120 volt grid input for battery charging / pass thru.
>>
>> So, my issue is, how can I make this work?  I am thinking of using a 50
>> amp automatic transfer switch like a Surge-Guard-40100 and connecting the
>> solar inverter as primary and grid as backup but am not sure if that unit
>> will disconnect the grid with only one leg energized.   Physical space for
>> components is very limited
>>
>> If anyone has some ideas here, I would sure appreciate it.
>> (other than "just walk away" or buy a 240 volt inverter)
>>
>> Thanks,
>> Kris
>>
>>
>> Shine On!
>>
>> Kris Schmid
>> Legacy Solar, LLC
>> 137 West 1st Avenue
>> Luck, WI 54853
>> www.legacysolar.com
>> 715-653-4295
>> NABCEP Certified PV Installation Professional
>> Licensed Wisconsin Master Electrician
>> BSEE
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>
> --
> Matt Sherald
> PIMBY Energy, LLC
> NABCEP Certified Solar PV Installer®
> 304-704-5943
>
> www.getpimby.blogspot.com
> www.getpimby.com
>
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