[RE-wrenches] Hawaiian Tie in

[Darryl Thayer]

I need clarification; however, here is my interpretation for you.
The utility feeds the meter and then the 100A breaker.
Then you want this 100A breaker to feed the 220A bus panel.
This 220A panel then supplies through a 100A breaker the house load.
The solar also feeds the 220A panel.  If the solar exceeds 100A, and the
house load is small, the meter breaker will disconnect, losing power to the
solar and the load.

On Tue, Aug 8, 2023 at 10:11 AM Dana Orzel via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Oh Wise folks!
>
> Attached is a wire schematic please review. & feel free to possibly use
> for yourself in the future.
>
> I am in a bind with an interconnection where I have an apartment 6 pack
> meter  box with all 120-240v/100 amp breakers & assumed 100 amp busbars.
> The apts. were a mid 1970's original build.  There are 4 apartment with 1
> circuit/meter each & 1 house circuit/ meter for owners use.The breaker
> boxes are Sylvania (yuck). Originally I assumed a larger busbar due to 6 -
> 100 amp breakers & this was not the case. We all know about assuming...
>
> I consulted with W-2 who had assisted my lead installer in in the past
> from UT. He sent the following & though it makes sense to me, the utility
> is asking how I can have a 225 amp panel behind a 100 amp breaker. My
> response was that all we are doing is  achieving a properly sized bus bar
> to accommodate the back feed.
>
> My Utility Idaho Power requires  interconnection with a meter that has a
> load on it. Solar only meters are not allowed. This is for the owners loads
> only & he has 1 meter per apt complex at 100amps each.
>
> I am wondering if any of you have used this connection adaption to achieve
> a larger array connection & how it went?
> --
> Dana Orzel Great Solar Works, Inc. C - 208.721.7003 dana at solarwork.com
> Idaho Contractor - # 028765 Idaho PV # 028374 "Responsible Technologies for
> Responsible People since 1988"
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