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Correct abbreviations for electrical units.

broadgage
One thousand watts is it 1Kw or is it 1KW both are used.

Is a "board of trade unit" 1Kwh or is it one 1KWH.


Likewise 1Mw or 1 MW

And 1Mwh or 1MWH.


And spelling.

Power inverter or power invertor or is either correct.
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    Simon Barker:

    The National Physical Laboratory would disagree with you on that one, as would the US National Institute of Standards and Technology (NIST).  The unit of temperature is kelvin, and for current is ampere.  And the same for all the derived units (hertz, newton, pascal, joule, watt, and so on).

    https://www.npl.co.uk/si-units
    https://physics.nist.gov/cuu/Units/units.html



    Strange that the base unit for mass is the kilogram and not gram!


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  • 0
    Simon Barker:

    The National Physical Laboratory would disagree with you on that one, as would the US National Institute of Standards and Technology (NIST).  The unit of temperature is kelvin, and for current is ampere.  And the same for all the derived units (hertz, newton, pascal, joule, watt, and so on).

    https://www.npl.co.uk/si-units
    https://physics.nist.gov/cuu/Units/units.html



    Strange that the base unit for mass is the kilogram and not gram!


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