Re: Not just business
Are you an electrical engineer?
Let's assume I have a 4kVA panel and that on a rare sunny say I am feeding 3.45kVA back into the grid at 230V nominal (for obvious reasons of convenience).
15A. How much excess voltage do you think that produces on your local cabling? Short circuit capability is likely to be in excess of 1500A, so worst case you might add 2.3V. In reality, it's very much less. At the time of which I wrote, when generation conditions were practically ideal, the actual voltage at the inverter terminals was 345V. The maximum allowed by spec is 357.7.