Would need to pay close attention to short circuit protection & fault protection;
and the absolute requirement for final subcircuits supplying sockets / lighting to be RCD-protected
(I strongly suspect you won't find any Approved & SDoCed RCDs for 110 V).
half the voltage, so double the current, so bigger conductors; and multiply again for voltage drop.
Then all directly-connected, with high-current switches.
plus the inverter - sized for max demand of the part-installation
and a DB - since they won't all fit on one final subcircuit.
Seems a lot of trouble & cost just to be able to run American? appliances that aren't supported in NZ.
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