Didn't know that, might have a play - I want to test the water for going over the 16A limit as I would rather not need to buy a limiting inverter or go for 3 phase, even though the pole with it on is in our land and right next to the meter cupboard, and our projected usage pattern will mean that we would be better off if we can export more. Reading around it looks like it is usually NO but can sometimes be YES.