The isolating switch is installed between the meter box and the inverter to safely disconnect the inverter from the grid.
According to the new NEN1010, it is mandatory for installers to install a work switch near the inverter, so that you can safely work on the inverter if necessary. Especially important if several people are working on the set, or if the inverter hangs far from the distribution cabinet.
Note! If you have installed the isolating switch, make sure you do not switch the earth cable with it.