Inverter/charger size
The required size of the inverter/charger depends on the type of installation.
In a grid-parallel installation, the size of the inverter/charger can be (much?) smaller than the highest expected nominal and peak loads. For example, to cover the base load of a two-person household, an 800VA inverter/charger may be sufficient. For a family, a 3000VA inverter/charger can run most appliances – as long as not more than one of them is running at the same time. This means that the system can reduce grid power consumption from late spring to early autumn – perhaps to zero – with sufficient storage.
High surge power rating – The surge power rating of the Victron inverters is very good being roughly 2.5 times the rated continuous power output. This equates to a 2400W (2.4kW) continuous output inverter providing peak output of 6000W. This is enough for the short start-up spikes from pumps, compressors, etc.