<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<p>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. <br>
</p>
<p>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.</p>
<p>Just guessing,<br>
</p>
<pre class="moz-signature" cols="72">Ray Walters
Remote Solar
303 505-8760</pre>
<div class="moz-cite-prefix">On 1/14/20 7:03 PM, Mac Lewis wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAOABG49Z_NCrDXi9BVmW_RVT-y-NL0R0-hnZPDStj++-S7aMXg@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="auto">Hi wrenches,
<div dir="auto"><br>
</div>
<div dir="auto">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</div>
<div dir="auto"><br>
</div>
<div dir="auto">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?</div>
<div dir="auto"><br>
</div>
<div dir="auto">I haven't dug too deep into this yet but maybe
someone else has seen this.</div>
<div dir="auto"><br>
</div>
<div dir="auto"><br>
</div>
<div dir="auto">Thanks in advance for your help.</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<pre class="moz-quote-pre" wrap="">_______________________________________________
List sponsored by Redwood Alliance
List Address: <a class="moz-txt-link-abbreviated" href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a>
Change listserver email address & settings:
<a class="moz-txt-link-freetext" href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a>
List-Archive: <a class="moz-txt-link-freetext" href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html">http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html</a>
List rules & etiquette:
<a class="moz-txt-link-abbreviated" href="http://www.re-wrenches.org/etiquette.htm">www.re-wrenches.org/etiquette.htm</a>
Check out or update participant bios:
<a class="moz-txt-link-abbreviated" href="http://www.members.re-wrenches.org">www.members.re-wrenches.org</a>
</pre>
</blockquote>
</body>
</html>