[RE-wrenches] multiple points of grid connection and the opposite end of the bus rule

[Jason Szumlanski]

Admittedly I only partially understand your scenario, but I have found that
multiple points of interconnection to a single service are not problematic
as long as the rules of 690.64 (NEC 2008) are followed. We have done supply
side and load side connections on the same service - which sometimes
happens if we are adding onto a PV system where there is already a max'd
out load side connection.

Jason Szumlanski

On Wed, Oct 22, 2014 at 9:15 AM, Allen Frishman <amfrish at aeonsolar.com>
wrote:

> Wrenchers,
> I am working on a multi building complex that is part of a isolated grid
> (multiple buildings are fed from one central building).    All of the power
> from the utility enters one central building via a 4000AS/4000AF Service
> Switch.   The 4000A Service switch feeds a 3 section cabinet with (5) fused
> switches per section.    The fused switches in each of these sections then
> feed a different building in the complex.    My plan is to install a solar
> array with inverters on each of these buildings and grid connect to the
> conductors at the individual building entrances.   The majority if not all
> of the solar power will feed directly into the building that the array is
> located on however since the point of solar grid connection is to the
> conductors feeding the building that originate in the central buildings
> switch gear I am trying to get my head around the need to comply with the
> opposite side of the bus rule in the 3 sections located in the central
> building.
>
> I am hoping I am missing a rule in the NEC that will allow the multiple
> grid connections described to connect to all of the fused switch positions
> in the central buildings switch gear.
>
> All feedback is appreciated.
>
> *Al Frishman*
> AeonSolar
>
> *(917) 699-6641 <%28917%29%20699-6641> - cell*
> *(888) 460-2867 <%28888%29%20460-2867>*
> *www.aeonsolar.com <http://www.aeonsolar.com/>*
>
>
>
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