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

[Kirk Herander]

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!!*

dba Vermont Solar Engineering

802.559.1225
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