a bit lost!
I am trying to log the voltage on both phases (separately). It will be a voltage around 240v (ie 238>245), so I would like to log the values.
The reason for this is so I know when we lose the grid supply (which could drop on either phase, but most likely both together). This will let me track the times my battery actually performs the grid backup function (that could be 4-5 times a year). Also I can track the actual supply voltage.
Here in Australia, the suppliers tend to keep the voltage high, because the power consumption then increases. We have issues with inverters tripping due to over-voltage (not in my case because I use vge control setting on my inverter). Knowing the actual voltage means we can then ask the supply authority to reduce the vge tapping on the transformer (no Solid state smart grid supplies here!)
I will be reading the vge from the IoTaWatt, that I have calibrated using a true RMS meter (accurate enough for my purposes). The data is reaching my local EmonCMS server, but I am unsure how to configure the inputs.