How to add a plural to a lower case abbreviation?











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The average Arizona home uses 1,129 kWh of electricity a month or
13,548 kWh a year.




kWh is an abbreviation for kilowatt hour. How do I express kilowatt hours? Maybe kWh(s)? It would look strange as kWhs.



Also,




The average retail price for residential electricity in Arizona is
11.90 cents per kWh.




Do I need the "per" kWh? Is the word per already assumed?










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  • 1. Don't mix symbols and written-out units (cents per kilowatt hours). 2. Yes, you need the "per". 3. Don't use plurals with symbols. 4. There are plenty of style guides and examples of this on the web. Please do some research before asking here. Show your research and explain what you don't understand about what you found out.
    – Phil Sweet
    Dec 5 at 3:07










  • As Phil said, 3. Don't use plurals with symbols. Done.
    – Kris
    Dec 5 at 5:47















up vote
1
down vote

favorite













The average Arizona home uses 1,129 kWh of electricity a month or
13,548 kWh a year.




kWh is an abbreviation for kilowatt hour. How do I express kilowatt hours? Maybe kWh(s)? It would look strange as kWhs.



Also,




The average retail price for residential electricity in Arizona is
11.90 cents per kWh.




Do I need the "per" kWh? Is the word per already assumed?










share|improve this question






















  • 1. Don't mix symbols and written-out units (cents per kilowatt hours). 2. Yes, you need the "per". 3. Don't use plurals with symbols. 4. There are plenty of style guides and examples of this on the web. Please do some research before asking here. Show your research and explain what you don't understand about what you found out.
    – Phil Sweet
    Dec 5 at 3:07










  • As Phil said, 3. Don't use plurals with symbols. Done.
    – Kris
    Dec 5 at 5:47













up vote
1
down vote

favorite









up vote
1
down vote

favorite












The average Arizona home uses 1,129 kWh of electricity a month or
13,548 kWh a year.




kWh is an abbreviation for kilowatt hour. How do I express kilowatt hours? Maybe kWh(s)? It would look strange as kWhs.



Also,




The average retail price for residential electricity in Arizona is
11.90 cents per kWh.




Do I need the "per" kWh? Is the word per already assumed?










share|improve this question














The average Arizona home uses 1,129 kWh of electricity a month or
13,548 kWh a year.




kWh is an abbreviation for kilowatt hour. How do I express kilowatt hours? Maybe kWh(s)? It would look strange as kWhs.



Also,




The average retail price for residential electricity in Arizona is
11.90 cents per kWh.




Do I need the "per" kWh? Is the word per already assumed?







grammatical-number abbreviations






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asked Dec 5 at 2:02









mathewbruens

1153




1153












  • 1. Don't mix symbols and written-out units (cents per kilowatt hours). 2. Yes, you need the "per". 3. Don't use plurals with symbols. 4. There are plenty of style guides and examples of this on the web. Please do some research before asking here. Show your research and explain what you don't understand about what you found out.
    – Phil Sweet
    Dec 5 at 3:07










  • As Phil said, 3. Don't use plurals with symbols. Done.
    – Kris
    Dec 5 at 5:47


















  • 1. Don't mix symbols and written-out units (cents per kilowatt hours). 2. Yes, you need the "per". 3. Don't use plurals with symbols. 4. There are plenty of style guides and examples of this on the web. Please do some research before asking here. Show your research and explain what you don't understand about what you found out.
    – Phil Sweet
    Dec 5 at 3:07










  • As Phil said, 3. Don't use plurals with symbols. Done.
    – Kris
    Dec 5 at 5:47
















1. Don't mix symbols and written-out units (cents per kilowatt hours). 2. Yes, you need the "per". 3. Don't use plurals with symbols. 4. There are plenty of style guides and examples of this on the web. Please do some research before asking here. Show your research and explain what you don't understand about what you found out.
– Phil Sweet
Dec 5 at 3:07




1. Don't mix symbols and written-out units (cents per kilowatt hours). 2. Yes, you need the "per". 3. Don't use plurals with symbols. 4. There are plenty of style guides and examples of this on the web. Please do some research before asking here. Show your research and explain what you don't understand about what you found out.
– Phil Sweet
Dec 5 at 3:07












As Phil said, 3. Don't use plurals with symbols. Done.
– Kris
Dec 5 at 5:47




As Phil said, 3. Don't use plurals with symbols. Done.
– Kris
Dec 5 at 5:47










1 Answer
1






active

oldest

votes

















up vote
3
down vote



accepted










Technically, "kWh" is an initialism for both "kilowatt hour" and "kilowatt hours". The one that applies depends on whether you're referring to more than one, e.g.



1 kWh = 1 kilowatt hour; and
2 kWh = 2 kilowatt hours.



the "per" is not assumed, but you can replace it with a "/", e.g.



10c per kWh; or
10c/kWh.



edit: for what it's worth, I found a similar question in the physics forum of the stackexchange site.



https://physics.stackexchange.com/questions/172039/usage-of-singular-or-plural-si-base-units-when-written-in-both-symbol-as-well-as






share|improve this answer










New contributor




Nima is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.


















  • Always cite your sources. See the FAQ. Good Luck.
    – Kris
    Dec 5 at 5:50













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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes








up vote
3
down vote



accepted










Technically, "kWh" is an initialism for both "kilowatt hour" and "kilowatt hours". The one that applies depends on whether you're referring to more than one, e.g.



1 kWh = 1 kilowatt hour; and
2 kWh = 2 kilowatt hours.



the "per" is not assumed, but you can replace it with a "/", e.g.



10c per kWh; or
10c/kWh.



edit: for what it's worth, I found a similar question in the physics forum of the stackexchange site.



https://physics.stackexchange.com/questions/172039/usage-of-singular-or-plural-si-base-units-when-written-in-both-symbol-as-well-as






share|improve this answer










New contributor




Nima is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.


















  • Always cite your sources. See the FAQ. Good Luck.
    – Kris
    Dec 5 at 5:50

















up vote
3
down vote



accepted










Technically, "kWh" is an initialism for both "kilowatt hour" and "kilowatt hours". The one that applies depends on whether you're referring to more than one, e.g.



1 kWh = 1 kilowatt hour; and
2 kWh = 2 kilowatt hours.



the "per" is not assumed, but you can replace it with a "/", e.g.



10c per kWh; or
10c/kWh.



edit: for what it's worth, I found a similar question in the physics forum of the stackexchange site.



https://physics.stackexchange.com/questions/172039/usage-of-singular-or-plural-si-base-units-when-written-in-both-symbol-as-well-as






share|improve this answer










New contributor




Nima is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.


















  • Always cite your sources. See the FAQ. Good Luck.
    – Kris
    Dec 5 at 5:50















up vote
3
down vote



accepted







up vote
3
down vote



accepted






Technically, "kWh" is an initialism for both "kilowatt hour" and "kilowatt hours". The one that applies depends on whether you're referring to more than one, e.g.



1 kWh = 1 kilowatt hour; and
2 kWh = 2 kilowatt hours.



the "per" is not assumed, but you can replace it with a "/", e.g.



10c per kWh; or
10c/kWh.



edit: for what it's worth, I found a similar question in the physics forum of the stackexchange site.



https://physics.stackexchange.com/questions/172039/usage-of-singular-or-plural-si-base-units-when-written-in-both-symbol-as-well-as






share|improve this answer










New contributor




Nima is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









Technically, "kWh" is an initialism for both "kilowatt hour" and "kilowatt hours". The one that applies depends on whether you're referring to more than one, e.g.



1 kWh = 1 kilowatt hour; and
2 kWh = 2 kilowatt hours.



the "per" is not assumed, but you can replace it with a "/", e.g.



10c per kWh; or
10c/kWh.



edit: for what it's worth, I found a similar question in the physics forum of the stackexchange site.



https://physics.stackexchange.com/questions/172039/usage-of-singular-or-plural-si-base-units-when-written-in-both-symbol-as-well-as







share|improve this answer










New contributor




Nima is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this answer



share|improve this answer








edited Dec 5 at 2:34





















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answered Dec 5 at 2:23









Nima

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462




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Nima is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






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  • Always cite your sources. See the FAQ. Good Luck.
    – Kris
    Dec 5 at 5:50




















  • Always cite your sources. See the FAQ. Good Luck.
    – Kris
    Dec 5 at 5:50


















Always cite your sources. See the FAQ. Good Luck.
– Kris
Dec 5 at 5:50






Always cite your sources. See the FAQ. Good Luck.
– Kris
Dec 5 at 5:50




















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