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 > > <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 > <mailto:RE-wrenches@lists.re-wrenches.org> > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > <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 > <http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html> > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm <http://www.re-wrenches.org/etiquette.htm> > > Check out or update participant bios: > www.members.re-wrenches.org <http://www.members.re-wrenches.org/>
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