[RE-wrenches] Little Rosie vs Arc Fault Breaker?

[Sue Stankevitz]

Hi Kent,
This is the first we have heard of an issue of this nature but if you can please provide the model of breaker and share what loads are connected to that circuit with Ryan at midnitesolar.com<mailto:Ryan at midnitesolar.com> we would like to try to recreate the issue and determine if it is something on our end that needs to be addressed.

Sue Stankevitz
MidNite Solar, Inc.<https://www.midnitesolar.com/index.php>
(360) 403-7207 (XT122)
[cid:image001.gif at 01DC5D19.6EB280F0]

From: RE-wrenches <re-wrenches-bounces at lists.re-wrenches.org> On Behalf Of Kent via RE-wrenches
Sent: Friday, November 21, 2025 7:29 PM
To: Tom McCalmont <tom.mccalmont at pairedpower.com>; RE-wrenches <re-wrenches at lists.re-wrenches.org>
Cc: Kent <kent at coveoregon.com>
Subject: Re: [RE-wrenches] Little Rosie vs Arc Fault Breaker?


It is the inverter that trips off not the breaker and nothing needs to be done to restore power except to reset the inverter. It isn't unusual for an inverter to trip off due to overload faster than a breaker responds. But I wouldn't expect the inverter to trip off due to an arc fault.

The electrician has been out there twice looking for a problem with the wiring and found nothing.

Kent Osterberg
Blue Mountain Solar


On 11/21/2025 3:35 PM, Tom McCalmont wrote:
Maybe it’s a real arc-fault in the system somewhere, and the breaker is trying to tell you that.

Tom McCalmont
CEO, Paired Power
pairedpower.com<http://pairedpower.com> | LinkedIn<https://www.linkedin.com/company/paired-power/>
Direct: (669) 877-2931




On Nov 21, 2025, at 3:32 PM, Kent via RE-wrenches <re-wrenches at lists.re-wrenches.org><mailto:re-wrenches at lists.re-wrenches.org> wrote:

Fellow Wrenches,

I have a system that we installed a few weeks ago that is driving us crazy with overload faults. It is a remote cabin with maybe a half dozen circuits being fed by a Little Rosie inverter. Every couple weeks the power system shuts down with the Little Rosie showing an overload for no apparent reason. Client resets the inverter and everything runs fine for a couple weeks or so. The system seems to have no trouble when the Arc Fault (a Siemens arc fault breaker in a 100-A Siemens panel) breaker is turned off. Any of you have similar issues with these breakers? It is weird that the breaker could actually be causing the inverter to trip off.

Kent Osterberg
Blue Mountain Solar


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