Outback grid tie ineffciency [RE-wrenches]

[Carl Hansen]

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Greetings,

  I've got a GTFX installed with 1400 watts of PV, the output of the 
inverter goes through the utilities REC meter before it ties into the  main 
panel, so the REC meter records all the days output from the inverter into 
the grid. What I'm finding is the REC meter records between 1 K watts to 1.5 
K watts less at the end of the day than the MX 60 tells me passed through 
it. So, I'm seeing between 15% -20% loss of power.  I know the inverter has 
some power transfer inefficiency and it draws power over night standing at 
idle, and the batteries get recharged in the morning,but the batteries are 
at 25.4 in the morning before sunrise, is this what I have to expect from 
the system?

Carl Hansen
Hansen&Sun Elect. 


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