Basic electrical lesson

   / Basic electrical lesson #12  
I'm guilty of recently using the phrase "7200 watts per hour = 7.2kWh" in a discussion of the operating costs of a clothes dryer.

What I should have said, to be precise, is "a 7200 watt dryer operated for one hour = 7.2kWh", as I was aiming at arriving at the standard billing unit for electricity tied to a unit of operation time that is useful for the reader's comprehension. There is really no such thing as a 7200 watt hour dryer.

It never a bad thing to understand basic concepts, carry on with your pedantry. :thumbsup:
 
   / Basic electrical lesson #13  
Put in the very simplest terms: "Per hour" does not equal "for an hour."
 
   / Basic electrical lesson #15  
....then there are many of us who operate with "fuzzy logic".

I'll always remember being a janitor, green Dickies outfit and all, one summer when I was home from college, good money but nobody knew I was an electrical engineer major. One day I'm going around a factory engineering department office, emptying garbage cans, and a guy is drawing logic gate diagrams (and/or/nor's, etc..) on a whiteboard, designing how a machine is suppose to work. So I ask "Hey what's that?" Got the roll of the eyes, and an answer something like: "Well (Mr. Janitor, I doubt you'll understand, but), these diagrams describe...blah, blah blah". To which I reply "Oh, that's neat. Say, have you tried expressing it in Boolean equations and using identities to reduce the number of operations? " You could see the jaws drop and a confused look come over their faces from getting advice from the janitor. Finished the sentence with "Where do you want your garbage can put?" and walked out of the room. Priceless!
 
   / Basic electrical lesson #16  
   / Basic electrical lesson #17  
....then there are many of us who operate with "fuzzy logic".

I'll always remember being a janitor, green Dickies outfit and all, one summer when I was home from college, good money but nobody knew I was an electrical engineer major. One day I'm going around a factory engineering department office, emptying garbage cans, and a guy is drawing logic gate diagrams (and/or/nor's, etc..) on a whiteboard, designing how a machine is suppose to work. So I ask "Hey what's that?" Got the roll of the eyes, and an answer something like: "Well (Mr. Janitor, I doubt you'll understand, but), these diagrams describe...blah, blah blah". To which I reply "Oh, that's neat. Say, have you tried expressing it in Boolean equations and using identities to reduce the number of operations? " You could see the jaws drop and a confused look come over their faces from getting advice from the janitor. Finished the sentence with "Where do you want your garbage can put?" and walked out of the room. Priceless!

A beautiful mind?
 
   / Basic electrical lesson #18  
Exactly the same as yours. I've been guilty of the same mistake. I was just backing you up.

Thank goodness. :laughing:

To be picky, I didn't think my original sentence was all that bad. The discussion was about the electricity cost of operating a clothes dryer.

If I had included the implicit information such as: "[Operating a dryer rated at] 7200 watts per hour [of use] = 7.2kWh." Would I still be guilty?
 
   / Basic electrical lesson #19  
Geez, must be a slow day..... BRING ON the deep snow to be cleaned off the driveway...!!!!!! [ :) ]
 
   / Basic electrical lesson #20  
I have a dryer that has a dial that goes to eleven.
Can I play in this conversation?
 

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