[RE-wrenches] Hawaiian Tie in

[Dana Orzel]

Correct  & The 225 amp bus bar gives us the busbar ampacity to accept 
the 120 amp back feed (includes the 25% factor)

22800w /240v = 95 amp


On 8/8/2023 12:19 PM, Darryl Thayer via RE-wrenches wrote:
> 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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-- 
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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