Is it possible to put two (or more) inverters or Multi's in parallel?
YES, up to 5 Phoenix Inverter 3000VA can be connected in parallel to increase the output power. "Small" inverters do not have this feature and will be damaged when connecting an AC source to the output.
Multi's and Quatrro's have a "Power Assist" function and synchronize their output to the shore or generator output; in this way up to 6 units can be connected in parallel with an inverter power of 45kW/54kVA and a charge current of 420A.
This is only possible with the same types of units, different types can not be paralleled.