Here is a link to download the SolarPro May/June 2016 issue reference below: https://drive.google.com/file/d/1eiBt5n-ABfNn2ng8IwVl2yMvVHpQlZ_U/view?usp=sharing
-August On Tue, Apr 23, 2024 at 4:34 PM August Goers <[email protected]> wrote: > Hi William and All - > > The SolarPro Magazine article on page 35 "Updates for NEC 2017 PV Systems" > by Bill Brooks is excellent and talks about "The replacement of legacy > grounded inverters with new and improved transformerless inverters" on page > 41. > > This might be helpful for thinking through the implications of upgrading > old transformer isolated inverter systems with modern transformerless > non-isolated inverters. > > Best, > > August > Luminalt > > > ---------- Forwarded message --------- > From: August Goers <[email protected]> > Date: Thu, Sep 16, 2021 at 6:00 PM > Subject: Re: [RE-wrenches] Transformerless inverter conversion > To: <[email protected]> > > > Here is the original magazine I downloaded from the Solar Pro Magazine > archives. > > August > > On Thu, Sep 16, 2021 at 5:42 PM William Miller <[email protected]> > wrote: > >> August: >> >> >> >> I can’t seem to view the diagrams. Do you have access to a version with >> those available? >> >> >> >> Thanks, >> >> >> >> William >> >> >> >> Miller Solar >> >> 17395 Oak Road, Atascadero, CA 93422 >> <https://www.google.com/maps/search/17395+Oak+Road,+Atascadero,+CA+93422?entry=gmail&source=g> >> >> 805-438-5600 >> >> www.millersolar.com >> >> CA Lic. 773985 >> >> >> >> >> >> *From:* August Goers [mailto:[email protected]] >> *Sent:* Thursday, September 16, 2021 3:47 PM >> *To:* William Miller >> *Subject:* Re: [RE-wrenches] Transformerless inverter conversion >> >> >> >> You bet! >> >> *August Goers* >> >> Principal >> >> Luminalt Energy Corporation >> >> o: 415.792.6666 >> >> m: 415.559.1525 >> >> www.luminalt.com >> >> >> >> >> >> >> >> On Thu, Sep 16, 2021 at 2:24 PM William Miller <[email protected]> >> wrote: >> >> August: >> >> >> >> Perfect. Thank you! >> >> >> >> I hope I formatted this reply to avoid being moderated. >> >> William Miller >> >> www.millersolar.com >> >> >> >> On Sep 16, 2021, at 11:58 AM, August Goers <[email protected]> wrote: >> >> >> >> Hi William - I think this article by Bill Brooks directly answers both of >> your questions: >> >> >> >> >> https://www.southportland.org/files/8814/8156/0204/NEC_2017_Updates_for_PV_Systems___SolarPro_Magazine.pdf >> >> >> >> -August >> >> >> >> On Thu, Sep 16, 2021 at 9:19 AM William Miller <[email protected]> >> wrote: >> >> Friends: >> >> >> >> Thanks to all of you for your valuable input on the repowering project I >> am researching. I am learning a lot in the process and generating more >> questions as I proceed. Here is are questions that came up, and if any of >> you have insight, I would love to hear it: >> >> >> >> 1. Array OCPD/disconnecting. The existing array has fuses in the >> positive leads only. If we were to upgrade to transformerless inverters, >> will we be required to install OCPD in the negative leads as well? (In >> researching this I came upon this entry in 2017 NEC 690.9: *Informational >> Note: Due to improved ground-fault protection required in PV systems by >> 690.41(B), a single overcurrent protective device in either the positive or >> negative conductors of a PV system in combination with this ground-fault >> protection provides adequate overcurrent protection.*) >> >> *2.* In the 2014 NEC when installing Ungrounded PV systems, the >> following requirement appeared in 690.35: *Conductors listed and >> identified as PV wire installed as exposed, single conductors…* What >> happened to 690.35, and can I now use USE-2 on transformerless inverter >> installations? >> >> >> >> Thanks in advance. >> >> >> >> William Miller >> >> >> >> Miller Solar >> >> 17395 Oak Road, Atascadero, CA 93422 >> <https://www.google.com/maps/search/17395+Oak+Road,+Atascadero,+CA+93422?entry=gmail&source=g> >> >> 805-438-5600 >> >> www.millersolar.com >> >> CA Lic. 773985 >> >> >> >> >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> Pay optional member dues here: http://re-wrenches.org >> >> List Address: [email protected] >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> There are two list archives for searching. When one doesn't work, try the >> other: >> https://www.mail-archive.com/[email protected]/ >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> http://www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> http://www.members.re-wrenches.org >> >> -- > August Goers > Luminalt > o: 415.792.6666 > m: 415.559.1525 > [email protected] >
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