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Correct abbreviations for electrical units.

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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  • It is 1kW,  1kWh , 1MW, 1MWh.   The multipliers are generally capital for values over one except k (1000). The units are generally capital except time units s (second).h (hour).  Cant remember why.

    I would say inverter but there are plenty of uses of invertor around.
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  • It is 1kW,  1kWh , 1MW, 1MWh.   The multipliers are generally capital for values over one except k (1000). The units are generally capital except time units s (second).h (hour).  Cant remember why.

    I would say inverter but there are plenty of uses of invertor around.
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