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

[Tom McCalmont]

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> 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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