If you read some of the proposed changes for the 2017 NEC, it is looking life
there will be no problem replacing isolated inverters with non-isolated
versions. In fact the proposed wording seems to allow either USE, or PV wire to
be used with non-isolated inverters explicitly going forward.
It made me feel better about doing recent replacements.
I'm having more trouble with the TL inverters and AFCI issues on older systems,
however.
-----Original Message-----
From: "Gary at Santa Ynez Valley Solar" <g...@syvsolar.com>
Sent: 7/21/2016 21:43
To: "re-wrenches@lists.re-wrenches.org" <re-wrenches@lists.re-wrenches.org>
Subject: [RE-wrenches] Replacing grounded inverters
We are all facing having to replace the old transformer based inverters when
they run out. Really difficult to find replacements. Against code to replace
with transformer less ones. I wonder if a DC/DC transformer could be
installed just ahead of the transformer less inverter for isolation
purposes? Not clear on the concept.
Gary
Gary Gordon
cid:image001.jpg@01D06621.23813A90
<http://www.syvsolar.com/> www.SYVSolar.com
PO Box 688
Santa Ynez, CA 93460
805 688-1213
NABCEP Certified Installer
CA Licensed Solar Contractor
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