At least when we sold these they were not listed. We got caught on this a couple of times in WA state and were not allowed to install them. Also Grundfos said not to use a Gfi with them. Maybe a dc gfi might be ok on the PV side of the CU200.
Brad Sent from my iPhone > On Oct 27, 2020, at 3:02 PM, Dave Angelini Offgrid Solar > <offgridso...@sti.net> wrote: > > If it is all Grundfos electronics and the panels they specify, then I would > get a permit and let the inspector make the decision. > > > Dave Angelini Offgrid Solar > "we go where powerlines don't" > http://members.sti.net/offgridsolar/ > e-mail offgridso...@sti.net > text 209 813 0060 >> On Tue, 27 Oct 2020 12:11:17 -0700, Brian Mehalic <br...@solarenergy.org> >> wrote: >> >> Well Jay, if you call each of those poles "arrays" then you've got a path >> around the 2 parallel circuit maximum :) >> >> Note 2020 NEC language has changed a bit, though it's still not crystal >> clear: >> "PV system dc circuits that exceed 30 volts or 8 amperes shall be provided >> with dc ground-fault protection meeting the requirements of 690.41(B)(1) and >> (B)(2) to reduce fire hazards. Solidly grounded PV source circuits with not >> more than two modules in parallel and not on or in buildings shall be >> permitted without ground-fault protection." >> >> Brian Mehalic >> NABCEP Certified Solar PV Installation Professional™ R031508-59 >> National Electrical Code® CMP-4 Member >> (520) 204-6639 >> >> Solar Energy International >> http://www.solarenergy.org >> >> SEI Professional Services >> http://www.seisolarpros.com >> >> >>> On Tue, Oct 27, 2020 at 11:40 AM jay <jay.pe...@gmail.com> wrote: >>> HI All, >>> >>> I've got a question about GFDI requirements and do they apply to the >>> following. >>> >>> Here is the project. >>> >>> 1. water pumping DC direct grundfos SQFLex >>> >>> 2. no humans anywhere around >>> >>> 3. no buildings or living structures >>> >>> 4. would be 3 pole mounts: each mount as 1 string, so 3 strings. >>> 2019 code 690.41 B2 says that 2 modules in parallel without humans >>> involved doesn't need GFDI >>> >>> 5. system would be solidly grounded. >>> >>> So what is the requirement for needing GFDI on this project? >>> >>> thanks >>> >>> jay >>> >>> >>> >>> >>> >>> >>> _______________________________________________ >>> 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 >>> >>> There are two list archives for searching. When one doesn't work, try the >>> other: >>> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >>> 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 > _______________________________________________ > 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 > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > 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 >
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