[Tiara Sovran] (2009 Tiara Sovran ) When underway do you turn off the charger breaker ?

[Donaldjames]

We are new owners of a 2009 Tiara Sovran , I am a bit confused on the charging system . When you are underway and the boat engines are running is it okay to turn off the  battery charger breaker ?  Will the engines  then be the source of  charging for the batteries ?

OR when running the engines AND the generator can the battery charger be switched off ?

 OR If I just leave the  breaker switch on  ( charger breaker ) will the system just automatically know what to do ?

Thanks to anyone willing to tell me what they do with their system. 

Cheers