Why can't you do a line side tap and downsize the main breaker? Use a 60A main
disconnect for the line side tap, and use a 60A main breaker for the service
panel. That's similar to what I did except I downsized the 200A main to a
150A. This also allowed a manual interlock kit in the main service panel that
can be fed from the backup load panel.
Steven Lawrence
______________________________________________________
Date: Wed, 31 Mar 2010 08:13:10 -0700 (PDT)
From: Nick Soleil <nicksoleilso...@yahoo.com>
To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
Subject: Re: [RE-wrenches] Supply Side Tap Overcurrent Protection
Message-ID: <342120.66732...@web44904.mail.sp1.yahoo.com>
Content-Type: text/plain; charset="us-ascii"
Downsize the main breaker? I would if I could, but the customer only has
100 Amps now, and the solar is fed with two breakers, a 30A and a 40A. So to
be under 120Amps, I would have to size the main to 50 Amps, which may be
problematic.
I can also do the line side tap, but had heard that a load analysis may be
accepted instead. The loads of the house will never use more than 100 Amps. I
am wondering if any codes or white papers detail that option.
Nick Soleil
Project Manager
Advanced Alternative Energy Solutions, LLC
PO Box 657
Petaluma, CA 94953
Cell: 707-321-2937
Office: 707-789-9537
Fax: 707-769-9037
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