Mark,
The readily accessible disconnect at the inverter is all that is necessary according to the code. There may be practical reasons for additional disconnects, but if the system has no combiner box, or the combiner is at the inverter, only the disconnect at the inverter is required. Bill. From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Mark Dickson Sent: Friday, December 18, 2009 3:25 PM To: 'RE-wrenches' Subject: [RE-wrenches] 690.31E (through a building) Hello there, Due to a lot of concrete and asphalt, we are forced to run our PV source circuits in through one exterior wall, through a crawl space and out through the opposite exterior wall to our inverter and disconnect. We will be using EMT and will not be making any stops while inside the building. We will however need to place a couple of pull-boxes due the various required bends in excess of 360*. Will we be required to place a DC disconnect at the "first readily accessible" point inside the building? Best regards, Mark Dickson, NABCEP Certified Solar PV Installer T Oasis Montana Inc.
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