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

[Kent]

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> 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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