[RE-wrenches] questions about solar charging 72v UPS

[Darryl Thayer]

Hi all 
I have attached a PDF of a charging scheme using Outback FM controllers.  The 
upper voltage 36 to 72 volt CC can not have a communication line connected, it 
will blow something, either the hub, or the controller as the controller floats 
but the communication lines are connected to the negative, and it would be 36 
volts above ground.    


      
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