Is it possible that it has nothing to do with it being an arc fault breaker? Just a short in the AC wiring on that circuit somewhere that is tripping the inverter off line, and it happens that that circuit is on an arc fault breaker. I know I've had issues with the SW inverters especially responding so fast to shorts anywhere on the AC wiring that even a bad power strip takes the inverter off line without tripping any breakers. Usually you can see a short if it's that fast of an overload though. Also, have you tried replacing the arc fault breaker? It might be a bad breaker perhaps that has a short?
Zeke From: RE-wrenches <[email protected]> On Behalf Of Kent via RE-wrenches Sent: Friday, November 21, 2025 7:29 PM To: Tom McCalmont <[email protected]>; RE-wrenches < [email protected]> Cc: Kent <[email protected]> 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 -- Zeke Yewdall PV Engineer NABCEP #031508-89 [email protected] 303-523-3592
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