Abbreviations, Letter Symbols and Acronyms
Abbreviations, Letter Symbols and Acronyms
(OP)
What is the source used by most of you for abbreviations?
For instance if have 50 ampere alternating current, should it be abbreviated 50 Amp ac, 50 A ac, 50A ac, 50 Aac or what.
I am doing a web page and would like to use standard (if there is such a thing) abbreviations. Would like the name of a book or standard or web page that can be use as a reference.
For instance if have 50 ampere alternating current, should it be abbreviated 50 Amp ac, 50 A ac, 50A ac, 50 Aac or what.
I am doing a web page and would like to use standard (if there is such a thing) abbreviations. Would like the name of a book or standard or web page that can be use as a reference.





RE: Abbreviations, Letter Symbols and Acronyms
Check their website for ordering information.
RE: Abbreviations, Letter Symbols and Acronyms
IEEE Std 280-1985(R1997) Standard Letter Symbols...
IEEE Style Manual http://standards.ieee.org/guides/style/
http://physics.nist.gov/Pubs/SP811/footnotes.html
RE: Abbreviations, Letter Symbols and Acronyms
Have tried the two referenced web sites and also ANSI/IEEE Std 260-1978 (Reaffirmed 1985) IEEE Standard Symbols for Units of Measurement.
Should IEEE Std 280 be obtained?
RE: Abbreviations, Letter Symbols and Acronyms
50 AMP AC
50 Amp AC
I think Ampier is capitalized because it is a person's name. Alternating current (AC) is in capitals because it is alternating current in the absolute sense (as compaired to "ac", incremental around an operating point).
RE: Abbreviations, Letter Symbols and Acronyms
RE: Abbreviations, Letter Symbols and Acronyms
50 A ac
This is consistent with IEEE journals and magazines.
RE: Abbreviations, Letter Symbols and Acronyms
Volts, like Amperes on the other hand are proper names and clearly always captialized , even when mixed in with mili-, as in 4-20mA.
To add to the controversy though (laughable as it is), why then do we mostly see DC capitalized, as in 50VDC? I rarely see it as 50V dc.
"Venditori de oleum-vipera non vigere excordis populi"
RE: Abbreviations, Letter Symbols and Acronyms
I've gone back and forth on space between the numbers and the units (sometimes in the same sentence!). But IEEE publications seem to be quite consistent about always having the space. "dc" is definitely NOT capitalized per IEEE convention, but you do see it both ways.
And my last question: Does anal-retentive have a hyphen?
RE: Abbreviations, Letter Symbols and Acronyms
Names used as names are capitalized. Names used as units, in general, are not.
50 amperes ac, 60 hertz
Names used as units and abbreviated to other than their one or two letter symbol are lower case.
50 amps ac
The first letter of symbols of units based on names are capitalized.
50 A ac, 60 Hz
The last is preferred. It avoids the whole question of whether more than one of a unit is plural or not. (Hang on)
AAC, by the way, is not a unit. It's short for all aluminum conductor.
RE: Abbreviations, Letter Symbols and Acronyms
http://physics.nist.gov/cuu/Units/units.html
TTFN
RE: Abbreviations, Letter Symbols and Acronyms
Bung
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