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You’re absolutely right.

Here (yet again):
The rules are fairly simple, and in this order of precedence:

  1. Units named after people have an UPPER CASE letter (Ampere, Gauss, Newton, Hertz, Kelvin, Faraday, Celsius, Joule, Volta, Watt, etc.)
  2. Multipliers greater than one have an UPPER CASE letter. (Mega, Giga, but kilo is beaten by rule 1 - K for absolute temperature after Lord Kelvin)
  3. Units not named after people, and multipliers less than one, have a lower case letter. (metre, second, gram, milli, micro(µ), nano, pico.)
    So two very common errors: Mhz is always wrong by rule 1, mhz is always wrong by rule 1 and most probably wrong by rule 2.
    Some commonly confused are: Siemens & second, Kelvin & kilo, Newton & nano. Unfortunately, there’s the exception that proves the rule: Tesla (after Nikola Tesla) & Tera - both share an upper case letter.

But I think, using the conditional processes on the emonCMS inputs page, Daniel could create one or more feeds with the “top slice” of power or energy, i.e that when the power exceeds the set value. That’s not what he’s asking for, but it might help his understanding of the proportions in which energy is used.

I have no idea whether Grafana is capable of any of the things that are being asked for. @Bill.Thomson knows Grafana reasonably well I think, maybe he can offer some advice.

@Daniel_Edge - you don’t say where you are in the world. Knowing that helps us because standards and practices vary greatly from country to country, and we often need to tailor our advice based on where you are.

Read the instructions for the smart plug - those or the rating label should give the maximum current, and the rating label for each appliance that’s fed by it, and do the sums. Bear in mind that for many things, the current may well be greater that the ratio power ÷ voltage indicates, for some types of load considerably more. Can you not use the plug itself on each item in turn to measure the current? Generally, it’s only things like timers on microwaves, ovens, etc that take a current that’s considerably (i.e. many times) larger than the power indicates; in most cases, the current should be between one and two times that which the calculation would indicate. So without detailed information or measurements, you should be OK up to about half the plug’s rating. Above that, and in the absence of measurements, I’d advise caution.