Originally Posted by sailingunity
Do you have an electrical schematic?
Here is the AC schematic. It is for US 120/240V powered boats. EU powered boats don’t have the autotransformers.
The two parallel inverter/chargers aren’t just for doubting the power
; they can also be configured to do frequency conversion (one converts shore power
to DC and the other takes that DC and makes AC for the boat
The bypass breaker allows switching off the inverter/chargers like when you are not aboard but want to run a dehumidifier etc. You can also use it like the OUT2 on the Multiplus units, i.e. only get power when shore power
or genset power is available. This allows full power output from a genset while the OUT2 ports
of Multiplus units are limited.
Edit: the distribution switches are actually on the distribution panels
and select which bus for that group of breakers. The breakers are spread strategically, i.e. water heater
and A/C are all on one of them so that it makes it logical to use bus2 or bus3 for that group when on shore power.