As for Isolation transformers, the two shore conections are different different configuration so without a big hammer, theres no cross connection issues.
Each shore power connection and its genset(s) counterpart and mechanically and electrically interlocked so they will not but head one another.
Are you by chance familiar with American Bureau of Shipping standards?
Is each shore power connection / genset a stand alone system?
Do you have three independant systems?
Shore 1 & Genset 1, Shore 2 & Genset 2, Inverter
I know nothing about the American Bureau of Shipping standards, sorry.
