u/Diligent-Place7943

No-one seems to make one over 40a, 3 times in the last 2 weeks I've needed a 50a or 63a.

The hybrid inverters need bi-directional rcbo's 'for safety' and otherwise they trip when changing over to battery supply. They cannot share an RCD with anything else,

A hybrid inverter on a garage CU fed from a 40a RCBO house CU needed upsizing to 50a, WYLEX don't make them.

What about a dedicated RCD just doing a 63a MCB? It's a pain but is it the same? I don't see why not