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: [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
_______________________________________________
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
