A mystery to me..... [RE-wrenches]

[penobscotsolar at midmaine.com]

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Hi Jeff,
  Thanks for the reply! The system is stand-alone, about 1 mile from the 
grid. I've been suspecting a wiring loop somewhere, but this system has been 
working great for two years. I'm really confused by the lack of breakers 
tripping combined with the inverter shutting down with no error 
light/message. It would seem with a loose neutral the breaker would kick.
  I continue my head scratching.........
Daryl
Penobscot Solar Design 

 

Jeff Yago writes: 

> Any chance there is "back feeding" going on from the inverter output
> on these specific breaker loads going around and also being back fed
> from the grid side?  In other words, when these breakers are switched,
> their circuits are being supplied from the other end by the grid so
> that the inverter "sees" a bottomless load to supply. 
> 
> I bet your problem is a wiring loop out in these load circuits and has
> nothing to do with inverter.  Could also be a loose neutral allowing
> return current flow on grounds. 
> 
> Jeff Yago 
> 
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