[RE-wrenches] Sol-Ark 15k Conduit Entries

Fri Aug 4 11:44:40 PDT 2023

That's an interesting idea for sure. Most residential garages around here
are only 8' or 9', so that could present some issues. It might be hard to
stack the HomeGrid batteries on a high rack, and then the wire management
from the top BMS is another issue. Still, for a more business/industrial
setting, I can see that being a plausible solution and could remove the
working depth issue altogether if they are high enough.

Incidentally, I just found this picture on the HomeGrid website showing
essentially zero clearance below a Sol-Ark inverter.

[image: image.png]

Jason Szumlanski
Principal Solar Designer | Florida Solar Design Group
NABCEP Certified Solar Professional (PVIP)
Florida State Certified Solar Contractor CVC56956

On Fri, Aug 4, 2023 at 12:56 PM Michael Morningstar via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> I just checked out the Homegrid batteries. Just throwing this out there.
> If there is enough ceiling height you could hang them. That's typically how
> we deal with transformers in commercial and industrial settings. We usually
> build a permanent gantry out of square tubing, 1/2" rod and strut. Then
> ratchet strap or chain hoist them up. Just an idea.
>
> Yes Dave, that's the one.
>
> On Fri, Aug 4, 2023 at 9:48 AM Dave Angelini Offgrid Solar via RE-wrenches
> <re-wrenches at lists.re-wrenches.org> wrote:
>
>> Very nice Install Michael!  Was that the project on the xxCloud River we
>> talked about?
>>
>> It looks like you have kept the gutter heat gain down to protect
>> electronics.  “the rule of thumb is that every 10°C increase in
>> temperature reduces component life by half”
>>
>> https://www.electronics-cooling.com/2017/08/10c-increase-temperature-really-reduce-life-electronics-half/
>>
>>
>>  *Dave Angelini Offgrid Solar
>> "we go where powerlines don't"
>>    <http://members.sti.net/offgridsolar/>https://offgridsolar1.com/ <https://offgridsolar1.com/>  <http://members.sti.net/offgridsolar/>
>> e-mail  offgridsolar at sti.net <offgridsolar at sti.net>
>> text 209 813 0060*
>>
>>
>> On 2023-08-03 10:08 am, Michael Morningstar via RE-wrenches wrote:
>>
>> Hi Drake,
>> Those are single phase combiner panels. I would have loved to set this up
>> as a three phase system, but there was already a mile of underground single
>> phase run throughout the property. We ended up running a half mile 15KV
>> line from the power site to the estate. This is an aside, it's kind of hard
>> to see, but for seperation, we attached  the pv circuits to the back of the
>> gutter using through bolted adhesive backed cable tie holders. Often we use
>> gutter dividers. They originate in the tall cabinet at the end which houses
>> controls, secondary PV disconnects, AC and DC egauges, Tigo hub, Battery
>> hub and (Lynk II). On the opposite end is a similar cabinet for the
>> collection and distribution of AC circuits. Also, above and below the
>> batteries are small gutters for communications and CT wires that run from
>> the transfer switches to eguage. One transfer switch to alternate usage
>> (alternating relay) or bypass between Gen 1 and Gen 2, and the other switch
>> to select inverter or generator power, locally or remotely. In the AC
>> cabinet there is a 400a contactor and time delay relay to achieve a
>> generator cooldown as the janky Sol-Arks don't do that and it's hell on new
>> diesels not to have that function.
>>
>>
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>> --
>>
>>
>>
>> Michael Morningstar
>>
>>
>>
>> Morningstar Electric
>>
>> PO Box 1494
>>
>> Mount Shasta, CA 96067
>>
>> 530-921-0560
>>
>> mjmorningstar at gmail.com
>>
>>
>>
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>
> --
>
> Michael Morningstar
>
>
> Morningstar Electric
>
> PO Box 1494
>
> Mount Shasta, CA 96067
>
> 530-921-0560
>
> mjmorningstar at gmail.com
>
>
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