Here are the key points that are usually adjusted or added:

1. Main fuse: In some cases, it is necessary to increase the main fuse to have sufficient capacity for the extra power that the solar panels will generate. This is assessed by an electrician based on the current load and the expected output of the solar panels.
   
   

2. Distribution board: Extra circuits need to be added to the distribution board to connect the solar panels. Usually, a separate circuit is added for the inverter and sometimes also for the charging station if you have one.
   
   

3. Residual-current device: It may be necessary to install an extra residual-current device to secure the solar panels. This depends on the specifications of your existing RCDs and the requirements of the solar panel installation.
   
   

4. Smart meter: If you do not yet have a smart meter, a new smart meter may need to be installed. This allows you to measure and track the energy output of the solar panels.
   
   

5. Electrical cables: Cables need to be run from the solar panels to the inverter and from the inverter to the distribution board. These cables must be suitable for carrying the generated electricity and must be installed safely.

It is important to emphasize that the exact adjustments in the meter cabinets can vary depending on the specific situation and the requirements of the solar panel installation. It is advisable to consult a professional electrician who has experience with solar panel installations to determine and carry out the right adjustments for your specific situation.