Ray Yes you can have a GFI trip as a result of something on the AC side, I had a hard line data line cause a trip of a GFI even though you would not see anything on a meter, had to use a optical bridge to connect, granted this was Sunpower 327's on a Outback 7200 off grid but it can happen. This is not to say that there is not a problem with the dryer however, just that there are other possibilities. Jerry
On Tue, Jan 14, 2020 at 4:51 PM Ray <r...@solarray.com> wrote: > If there is any current flow between DC negative and ground anywhere in > the system, it will trip. I would check the dryer for a ground fault, and > I would check the system to make sure Neutral is not bonded to ground in > more than one place (very common). Most importantly, I would make sure that > negative is not bonded anywhere except at the DC GFI in the controller. > > My guess is that DC is bonded at the negative shunt as is normal with many > DC load centers, and that the dryer is a big enough load that pulls enough > DC amps, so that some of DC negative is flowing back through the ground. > Probably doesn't trip normally, because at lower loads, less than an amp is > flowing on the ground. > > Just guessing, > > Ray Walters > Remote Solar > 303 505-8760 > > On 1/14/20 7:03 PM, Mac Lewis wrote: > > Hi wrenches, > > I've got an off grid customer that has an external PV GFI breaker in his > charge controller that trips when the dryer is on. He snuck in an electric > dryer uggh > > However, I am curious what the mechanism might be to cause the trip. Will > a ground fault on the AC side of an inverter trip a PV GFI on a charge > controller? > > I haven't dug too deep into this yet but maybe someone else has seen this. > > > Thanks in advance for your help. > > _______________________________________________ > 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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