The inverter you reference and Mohammad discusses may be an option that the original owner did not purchase from Amel.  We have a small inverter under the nav station that powers the entertainment system and an outlet strip installed by the first owner under the nav station for a computer and phone chargers.  The 220 volt outlets are energized only when connected to shore power or when the generator is running.
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Mark & Debbie Mueller
Brass Ring  A54