[RE-wrenches] ~5,000 amps @ 48 volts

[david quattro]

I’ve thought about HV and 60K model, but my loads are 240 Single phase,
across 5 separate contiguous parcels.  all these homes already have their
own utility meters.  There is one owner.  The plan is to have an ATS at
each meter.
   Regarding 3 phase offgrid, I’ve been concerned about phase imbalance.
Maybe I don’t need to worry about that.



On Fri, Dec 19, 2025 at 1:51 PM Michael Morningstar via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> A couple or three Discover HVs and Sol-Ark 60ks. Done quickly
>
> On Fri, Dec 19, 2025 at 1:00 PM Kirk Herander via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
>> Why 48v, why not commercial DC, like 850? What are you looking at for kwh
>> storage? A1000vdc buss, homemade or otherwise, would drop the buss rating
>> down to about 300 A. Commercial grade  inverters, such as 3-phase Delta PCS
>> inverters are spec'ed for these situations.
>>
>> On Fri, Dec 19, 2025 at 1:13 PM david quattro via RE-wrenches <
>> re-wrenches at lists.re-wrenches.org> wrote:
>>
>>> Hi everyone,
>>>    I am still helping an uber wealthy owner determine if he really wants
>>> this much power. If he does, do any of you have experience sourcing a 48v
>>> battery-combiner on the order of 4500 to 5000 amps?
>>>   I also want to get clear on how to best wire from batteries to
>>> combiner, and from combiner to inverters. I read here on the Wrenches list
>>> about some electricians who strategically sized conductor AWG so that
>>> resistance matches, which seems straightforward once we get our components
>>> mounted and accurate distances can be determined. Can anyone on list
>>> provide feedback about that, I really appreciate it!
>>> Thank you
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>>
>> --
>>
>>
>> *Kirk Herander / **kirkh at vermont.solar <kirkh at vermont.solar>*
>>
>> *Owner|Principal, VT Solar, LLC*
>>
>> *Celebrating our 34st Anniversary 1991-2025!!*
>>
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>>
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>
> --
>
> Michael Morningstar
>
>
> Morningstar Electric Inc
>
> PO Box 1494
>
> Mount Shasta, CA 96067
>
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>
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>
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