Unfused AC Disconnects with neutral terminal [RE-wrenches]
Kent Osterberg
kent at coveoregon.com
Tue May 22 20:26:55 PDT 2007
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Ron,
Your electrical parts distributor should be able to get you a SQ DU221N
or DU222N. The N means neutral included. You may be able to get a
neutral kit too.
Kent Osterberg
Blue Mountain Energy, LLC
=====================================
Hi all,
I need some advice on AC disconnects for residential systems. The
utility in New York requires an lockable AC disconnect close to the
meter. Even if a lot of the inverters now come with integrated
disconnects, depending on the inverter location we often need an
additional AC disconnect.
With all kinds of inverters coming out with a neutral for IEEE 1547
compliance, I have a hard time finding unfused, 120/240Vac, 30A or 60A
disconnects with a neutral terminal. We been using a lot of SquareD's
DU221 and DU222 but there is no neutral terminal available for those. I
been thinking of just pulling the neutral straight though the disconnect
(continuous from the inverter to the breaker ) without attaching to a
neutral terminal but I am not sure that meets the code.
Does anybody has a better idea? Are there disconnects out there that
meet the purpose?
Thanks,
Ron
Ron Stephan
Solar Energy Systems, LLC
1205 Manhattan Avenue
Suite 1210
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