[Stephen Small]

Hi Graeme

my understanding of AS/NZS4777 is that:

Inverters must provide islanded protection to the grid to preserve safety of grid personnel and the general public. The disconnection device shall operate when there is loss of power.

There is an additional requirement for obvious signage at the main switch warning of PV installation, and noting where the isolation switch location is.

I don’t think that disconnecton at the main switch is necessary after turning off the main switch and tagging – especially as s/he confirmed the service line was de-energised.

Was s/he an inspector? Physical disconnection requires inspection when relivening, but no inspection needed for removal of tag on main switchand and replacing survice fuse.