Mark,
NEC 230.2(A) specifically allows two services for parallel power
production sources. While a feeder from the house is technically not
the same as a service, it should be allowed provided that there is a
disconnect grouped with the main service disconnect. A discussion with
the inspector ahead of time should make this work smoothly.
Kent Osterberg
Blue Mountain Solar
Mark Frye wrote:
Thanks Nick,
250 talks about two seperate
buildings with one service, and 230 talks about one building with two
services.
I don't think this particular situation has
been contempated by the Code.
How big a deal would it be to just bond the
two ground electrode systems together and go along my merry way?
Mark Frye
Berkeley Solar
Electric Systems
303 Redbud Way
Nevada City, CA 95959
(530) 401-8024
www.berkeleysolar.com
It seems like it should be fine if you run one conduit to your
shop inverter, and another to a dc disconnect and underground to the
house inverter, but I see you running a bonding wire for the 2 GECs as
well for some reason. You should go through the part of 250 about
different GEC for separate building, which has some optional
installation options, and you could likely use that to justify running
the equipment ground back to the house.
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