So an AC disconnect in the inverter output between the inverter and panel or utility disconnect if required doesn't work for him or her? The locking provision is always in place on a standard AC disconnect.
Jesse Dahl NABCEP PV Installation Professional IBEW Local 292 - Electrician Electrical/Solar PV Instructor - HCC Sent from my iPhone > On Apr 28, 2016, at 5:58 PM, jay <jay.pe...@gmail.com> wrote: > > HI August, > > I guess my question is. > Are they asking for a lockout AC disconnect on a AC circuit IE from the AC > panel? > or > are they asking for a lockout from the inverter AC at the inverter? > > thanks > jay > > peltz power > > >> On Apr 28, 2016, at 3:11 PM, August Goers <aug...@luminalt.com> wrote: >> >> Hi Wrenches, >> >> We have a particular plan checker who wants us to provide a lockable AC >> disconnect for our inverter output circuit. His particular issue is that he >> wants the locking mechanism to be installed and on site. Here is a little >> NEC background info: >> >> 2014 NEC 705.22 Disconnect Device >> The disconnecting means for ungrounded conductors shall consist of a >> manually or power operable switch(es) or circuit breaker(s) with the >> following features: >> (1) Located where readily accessible >> (2) Externally operable without exposing the operator to contact with >> live parts and, if power operable, of a type that could be opened by hand in >> the event of a power-supply failure >> (3) Plainly indicating whether in the open (off) or closed (on) position >> (4) Having ratings not less than the load to be carried and the fault >> current to be interrupted. For disconnect equipment energized from both >> sides, a marking shall be provided to indicate that all contacts of the >> disconnect equipment might be energized. >> Informational Note to (4): In parallel generation systems, some equipment, >> including knife blade switches and fuses, is likely to be energized from >> both directions. See 240.40. >> (5) Simultaneous disconnect of all ungrounded conductors of the circuit >> (6) Capable of being locked in the open (off) position >> >> NEC 110.25 Lockable Disconnecting Means: >> Where a disconnecting means is required to be lockable open elsewhere in >> this Code, it shall be capable of being locked in the open position. The >> provisions for locking shall remain in place with or without the lock >> installed. >> >> Many times we are using a standard back-fed circuit breaker to comply with >> 705.22. Then we can supply a handle padlock attachment such as the one shown >> for Square D: >> >> http://static.schneider-electric.us/assets/pdf/retail/QO-and-Homeline-Accessories.pdf >> >> Does anyone else have experience installing these breaker handle padlock >> attachments? My concern is whether we can find them for all of the old types >> of breakers that we have to deal with. Also, our plan checker is requiring >> that this handle padlock attachment accessory is installed at the time of >> our inspection. Is anyone else dealing with similar issues? >> >> Best, >> >> August >> Luminalt >> >> >> >> >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> www.members.re-wrenches.org > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org >
_______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
