AC Connection at Fused Disconnect [RE-wrenches]

[Jim Easton]

An issue that has come up with our inspectors has to do with the panel NRTL
listing rather than any "Code" violation.  You might check with the panel
manufacturer or your UL Rep. to see if what you want to do would be allowed
without violating the panel listing.

Jim Easton PE
Alternative Energy Technologies
www.altenertec.com
CSL: 852243
9465-B Mission Park Place
Santee, CA 92071
Tel: 619-262-8800
Fax: 619-562-8811
Cell: 858-527-0240

-----Original Message-----
From: Mark Frye [mailto:markf at berkeleysolar.com] 
Sent: Sunday, February 04, 2007 7:17 AM
To: RE-wrenches at topica.com
Subject: AC Connection at Fused Disconnect [RE-wrenches]


I am planning to go apply for a permit from the City of Berkeley and expect
to get denied.

The job is this:

The house has a combination meter base with two main breakers only. There is
plenty of room to install a tap on one of the feeders before it leaves the
enclosure.

I want to install a branch circuit for the PV by mounting a fused disconnect
next to the meter base (<10 ft), tap one of the feeders and running the
circuit wire to the top of the fused disconnect.

The AC of the single UL1741 inverter will be connected to the bottom of the
fused disconnect.

I believe that such a method is clearly allowed by the Code.

Is anyone aware of any reasonable interpretation of any Article of the Code
that would support the AHJ's determination that the method is not allowed?

Thanks,

Mark Frye
Berkeley Solar Electric Systems


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