James Tigo will work in both grid and off grid module disconnect requirements Jerry
On Tue, Apr 2, 2019, 6:16 PM James Rudolph <[email protected]> wrote: > Aloha Wrenches, > I am in the process of familiarizing myself with the upcoming code > adoptions here. Big Island has just adopted 2014 and Kauai (KIUC) just went > to the 2017 NEC. > Below is what I have gathered so far on the changes that would apply > moving forward. > > > - 2014 > - My understanding is that most string inverters should take care > of ground fault/arc fault compliance. > - Need a disconnect within 10’ of rooftop array (exterior wiring). > - Microinverters/optimizers automatically take care of this > - For PV systems without backup, (i.e. Mauna Loa) can also just > install a string inverter within the boundary (no additional cost > other > than inverters in a bad location) which acts as the disconnect if the > inverter shuts down (i.e. turning the breaker off) > - For PV systems with backup, may need remote shutoff apart > from interconnection breaker > - Otherwise a disconnecting combiner is needed > - Labeling requirement changes > - 2017 > - Changes the 10’ rule to 1’ on the disconnect > - Also requires control of conductors in the array (optimizers or > possibly string level disconnects) > - Better/cheaper products are likely on the way, but I haven’t seen > them yet > > > > Have I missed some things? > > > Mahalo in advance. > > > > > *James B. Rudolph* > > *HU* > > *Director of Energy* > > *ES Electrician # 10816* > > *NABCEP Certified PV Installer # 091209-155* > > *808.594.9969* > > > > > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/[email protected]/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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