I have never seen an inverter that does not specify a OCPD size. Jay Peltz power.
Sent from my iPhone > On Jun 26, 2014, at 3:20 PM, Dave Click <davecl...@fsec.ucf.edu> wrote: > > Corey, > > The line of reasoning is faulty. It's 705.12(D)(1). Micro-inverters are the > exception because they are specially listed to share a breaker. As for the > other inverters, doubling them up on a single breaker / disconnect probably > goes against their installation instructions [110.3(B)] and it's unlikely > that you could put multiple units on a single breaker anyway because when you > take (2 inverters) x (rated current) x (1.25) you will probably come up with > a minimum breaker size that is larger than the maximum allowed under the NRTL > listing to UL 1741. > > Dave > > > >> On 2014/6/26, 16:18, Corey Shalanski wrote: >> We considered the necessity to shut down individual inverters and determined >> that the added costs of an inverter output combiner panel were not merited. >> I agree that in theory it seems beneficial to be able to switch each >> inverter individually, but how often does this occur in practice? For the >> relatively infrequent cases where we need to return to a jobsite and shut >> down an inverter - for troubleshooting/removal/etc. - we do not mind >> shutting down the other inverters (up to a limit) for what is hopefully a >> short period of time. >> >> Again, this whole line of reasoning may be shown to be faulty if someone can >> directly point to the Code section that requires OCPD on each individual >> inverter. >> >> -- >> Corey >> ᐧ >> >> >>> On Thu, Jun 26, 2014 at 9:20 AM, >>> <re-wrenches-requ...@lists.re-wrenches.org> wrote: >>> >>> Message: 5 >>> Date: Wed, 25 Jun 2014 19:17:57 -0700 >>> From: William Miller <will...@millersolar.com> >>> To: RE-wrenches <re-wrenches@lists.re-wrenches.org> >>> Subject: Re: [RE-wrenches] Combining Multiple Inverters >>> Message-ID: <04f4b8fd-e280-4bf2-b5a4-c2fca8d1c...@millersolar.com> >>> Content-Type: text/plain; charset="utf-8" >>> >>> Not allowed. You need a dedicated OCPD. Plus seems like a really bad idea. >>> How do you shut down just one inverter? >>> >>> >>> >>> Miller Solar >> >> >> _______________________________________________ >> 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 >
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