Hi Jay, Don’t forget to check at the inverter. As you probably know, VFXs come with a ground-neutral bonding jumper at the AC terminals on the unit. If this issue is not happening in bypass mode or normal inverter mode without Gen input, then it could be possible that there is a bond both at generator and at AC terminals of the unit. You’ve probably thought of this, but worth a check.
Best, Chris On Sun, Dec 20, 2020 at 10:03 PM Jay <[email protected]> wrote: > Hi Dave > > I’ve already suggested that. However the house hasn’t finished final sign > off due to C19 and gross incompetence from the county process, so it’s not > possible, yet. > > It’s entirely possible that at least part of the issue could be poor > quality GFCI or good quality and overly sensitive. > > I’ve already suggested changing a few of the GFCI to different brands to > see if this will fix the issue. Even if the issue is some basic problem > with generator output, harmonics etc. > > And possibly trying this for the breakers but they are damn expensive and > again odd they trip at the end and the outlets at the beginning. > > I’ll have to wait for the loaner generator to show up and then I’ll have > more data to share > > Thanks > > Jay > > > > > > > > > > > > > > On Dec 20, 2020, at 9:52 AM, Dave Angelini Offgrid Solar < > [email protected]> wrote: > > > > > > One way to troubleshoot this is by elimination. The genset would be a > start. The GFCI itself. I have had to switch from the contractor grade GFCI > to a quality make in new construction. > > > > Since this is new I would make sure on the AC panel, critical loads > like the house pump or fire pumps and refrigerator/ freezer were not put on > GFCI. I have seen some very bad things happen from this circuit that have > nothing to do with ground faults. The same for AFCI or my guaranteed income > source from grid-tie inverters. > > > > > > Dave Angelini Offgrid Solar > > "we go where powerlines don't" > > http://members.sti.net/offgridsolar/ > > e-mail [email protected] > > text 209 813 0060 > > > > On Sat, 19 Dec 2020 15:33:36 -0700, jay <[email protected]> wrote: > > > HI All, > > > > > > I have a client with a older Kohler 8-10kw generator, VFX 3648 stacked > > > inverters, newer rolls batteries. its been installed and operating > normally > > > for 10+ years. > > > > > > Customer had to upgrade the house for code, which involved installing > GFCI > > > outlets and GFCI breakers. > > > > > > Since then the GFI outlets trip every time the generator starts but > only > > > after 3-30 minutes. They work normally on the inverters. And if you > do a > > > bypass/generator direct the GFI outlets don’t trip. > > > > > > The GFI breakers trip when the generator is about to turn off, not > during > > > warm down but say 30 minutes before it will turn off. So charging > current > > > is at the lowest. And again they all work normally on the inverters > and all > > > the rest of the charge cycle. > > > > > > > > > Voltage is a bit high, around 254v-259v from the generator but it is > the > > > whole time and seems to stable voltage. But if the voltage was the > issue > > > the outlets would keep tripping. If it was too high for the breakers, > why > > > at the end and not the beginning? > > > > > > I’m thinking its possibly a control board in the generator that’s not > > > working well. Can’t keep up with the PF for the inverters, etc. > > > > > > Buts its a new issue I’ve not run across. > > > > > > Any ideas? > > > > > > thanks > > > > > > jay > > > > > > peltz power > > > > > > > > > > > > > > > _______________________________________________ > > > 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 > > > > > > 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 > > _______________________________________________ > > 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 > > > > 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 > > > _______________________________________________ > 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 > > 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 > > -- Chris Sparadeo C_802-369-4458 H_802-728-3059
_______________________________________________ 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 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
