This driver is pretty old and I do not remember much of the top of my head, but I will try to answer stuff quickly now and then more later when I get home and can review it to refresh my memory (anything I mention as something I will do, it should be this afternoon/evening):
- The Neurio did not provide amperage data when I last worked on the driver. I will check mine later to see if the API for it has been updated to include it since.
- There is not really a definition because there was not one listed when I made this (the API was very basic). Consumption was combined power usage for the phase and total. So they would be very similar to the channels.
- The driver does not calculate much of anything. The various values are as reported by the API.
- The HTML Template method will no longer work properly. Hubitat removed the ability to include HTML in preference values (as you see it removed). This driver has not been updated since that change as I really thought there was nobody out there using this anymore (besides me). I have newer code in other drivers that changes this to a Tile Template method (and accepts HTML-like format, ex: [br]. I will make that change (and maybe some others) and get an update published later.