[FoxtrotGolfXray 5.0]

Originally Posted by zilo

Nope, many think that...but grid feed inverters have anti-islanding by design..grid down...inverter stops in milliseconds....grid feed inverters need 50hz reference...if that isn't detected...off she goes for a while before it tries again....with increasing wait duration per retry.

Try it...switch your main board feed off and watch your inverter stop...and very quickly too.

Our distributor requires this test be conducted by the PV owner at least every year, to confirm it is working.

I still think you'd be in a world of grief if you failed to inform your distributor that you had a mains feed PV system and didn't declare it, should your PV system fail to anti-island in the event of a grid shut down for maintenance work.

Not something I'd recommend anyone do (not register your system with your distributor).