To preface, I am a relative beginner electronics hobbyist, and I have no experience reading schematics.
I have been working on a home wind turbine, and I would like to use Michael Davis's charge controller, but I am confused about the diagram.
Are all the "negative" wires for the three inputs to be connected together as the single common ground? Also, would the ground connection near IC1 simply denote another wire to said common ground? Last, if this is all the case, why would the relay inductor receive any current if the circuit has already been completed?
I'm sorry if the answers are terribly obvious. Any help would be appreciated.