Thanks m8. My electrition said it goes there but we were both unsure about the backup. If it needed a meter also.I'd like to know why we even need one if we have a smart meter that reads export?
One seems to make sense for the no longer available FIT payments where I believe there was a generation element to the payment. But new installs haven't been able to get that for ages.
My installer put mine between AC Grid and the CU.
I believe that the backup outlet is for running an up to 3.5 kw feed that supports important devices like fridges, from batteries, in the event if a power cut.