[RE-wrenches] Portable power station for surge loads

[James Jarvis]

Why not convert the 755' wire to 240 volt and put a small transformer on
ADU end for the 120 volt loads?


-James Jefferson Jarvis
APRS World, LLC
+1-507-454-2727
http://www.aprsworld.com/


On Sat, Mar 21, 2026 at 12:23 AM William Miller via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Friends:
>
>
>
> A long-time client has an ADU 755 conduit feet from the main house.  They
> started off-grid but they are now grid connected.
>
>
>
> In 1999 we pulled a 120 volt feeder of #1 aluminum to the ADU.  This
> provides about 10 amps at 5% voltage drop.
>
>
>
> This client wants to abandon a propane cook-top in the ADU in favor of an
> induction cook-top (indoor air pollution as a consideration).  A sample two
> burner induction cook-top is 1800 watts--too much power draw for this
> feeder.
>
>
>
> I was wondering if a portable power station rated at enough power to run
> the induction cook-top might solve this problem.  The 10 amp power feed can
> charge the power station at (hopefully) an acceptable amperage over an
> extended time period and the power station can provide enough surge power
> to run the cook-top intermittently.
>
>
>
> I see the Bluetti AC500, for example, can be adjusted to draw no more than
> 10 amps when plugged into AC.  Unfortunately this charge rate, when running
> at the full 10 amps, allows little overhead for other loads.  I presume
> this 10 amps draw is only 10 amps when the internal battery is fully
> discharged.  Maybe other units can charge at a lower rate.
>
>
>
> Have any of you tried this?  Any input is appreciated.
>
>
>
> William
>
>
>
> William Miller
>
> Miller Solar
>
> www.millersolar.com
>
> CA License C-10 77398
>
>
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