question about CU with solar PV

[Leesparkykent]

Basically yes.
If connected to an rcbo then the rcbo needs to be double pole.

Or single pole switched neutral?

 

[Leesparkykent]

Only if additional protection is required. Most I’ve done have been up the gable end wall in a bit of conduit.

 

[ChrisElectrical88]

Seen lots of PV installs in council owned houses. Every one of them on thir own SP RCBO from one of the two non RCD protected circuits available. Every board was a 2x5x5 duel RCD.

 

[Ian1981]

Or single pole switched neutral?

yes all live conductors require disconnection If an rcd is used for additional protection