Bandsaw to cut large wire?

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The answer is, of course, that you do not measure it in inches; you measure it in square inches. :)
In a related story...

I went to junior high school (middle school) in a school where the student body was a disciplinary challenge to teachers, and our 9th grade Algebra teacher quit in the middle of the term. The school replaced him with a big no-nonsense football coach who was not exactly a mental giant. On one of the quizzes he gave there was a bonus question: "How many inches are there in a square inch?" When I went to him to protest that it was a question with no answer, he looked at me as if I were an idiot and drew a 1" X 1" square on a piece of paper and traced around it with a pencil. He said (slowly, patronizingly, as if he were talking to a small child), "One, two, three four. The answer is obviously four."


Right. He should have stuck to football. :D
 
Ah, yes. One the very few nations that don't have SI as the standard system.
And that plays an ever so small of a role in why we are who we are. We are proud, and we stand alone as we must to preserve our liberty to do so. :happyyes:
 
In a related story...

I went to junior high school (middle school) in a school where the student body was a disciplinary challenge to teachers, and our 9th grade Algebra teacher quit in the middle of the term. The school replaced him with a big no-nonsense football coach who was not exactly a mental giant. On one of the quizzes he gave there was a bonus question: "How many inches are there in a square inch?" When I went to him to protest that it was a question with no answer, he looked at me as if I were an idiot and drew a 1" X 1" square on a piece of paper and traced around it with a pencil. He said (slowly, patronizingly, as if he were talking to a small child), "One, two, three four. The answer is obviously four."


Right. He should have stuck to football. :D

What if the square inch is a shape other than a square? At a minimum there are 3.545 inches, 2*sqrt(pi), in a square inch, according to that logic.
 
So. All those units were around before SI was even an idea. From there, we use what is convenient to us and expect the rest of the world to deal with it. :D
There is nothing convenient about horsepower or 4/0 wire size.
 
There is nothing convenient about horsepower or 4/0 wire size.

There was at one point, an advantage to the horsepower, as it compared power to something that people were familiary with, in the infancy of the industrial revolution. Now that we seldom use horses as power machinery, it is an obsolete concept to most recently educated people.


The AWG / aught scale is set up with the wire manufacturing in mind. It started representing the number of drawing die operations needed to make the smaller sizes.
 
What is not convenient about horsepower? I look in any motor catalog (catalogue) here in the states and they are listed by horsepower. What I don't get are car engines rated in Killowatts. Where do I plug the gasoline or diesel car in the read the meter?:p

Oh, in full disclosure, I do own one horse.

Mind your Ps and Qs (Pints and Quarts) of beer!:D

But don't drink an Imperial Gallon, that might be a bit too much.
 
There was at one point, an advantage to the horsepower, as it compared power to something that people were familiary with, in the infancy of the industrial revolution. Now that we seldom use horses as power machinery, it is an obsolete concept to most recently educated people.
Depends what you mean by recently. When I was at secondary school, what you'd probably refer to as high school, the unit of power then used was the horsepower. My physics teacher showed that it was a rate of work that could not be sustained by a horse. So, even back then, it was probably a bit of a fudge. No big deal.

We get electrical power from our suppliers as Volts and Amps. And at whatever PF our load is. We are billed in kWh. So why not express the power of an electric as kW? Yes, I can do the HP/kW conversion even as mental arithmetic. But, for me, it makes no sense to have to do that conversion.

The AWG / aught scale is set up with the wire manufacturing in mind. It started representing the number of drawing die operations needed to make the smaller sizes.
Thank you, sir. I didn't know that. But does it make sense to continue with it? I mean 16mm2 is 16mm2. It's a simple physical description of what the conductor size actually is in real world units.
 
...We get electrical power from our suppliers as Volts and Amps. And at whatever PF our load is. We are billed in kWh. So why not express the power of an electric as kW? Yes, I can do the HP/kW conversion even as mental arithmetic. But, for me, it makes no sense to have to do that conversion.
When we hear "horsepower", we know it is mechanical output. When you hear kW regarding a motor, do you know if that is input, losses, or mechanical output?


Thank you, sir. I didn't know that. But does it make sense to continue with it? I mean 16mm2 is 16mm2. It's a simple physical description of what the conductor size actually is in real world units.
12AWG is 12AWG. It's a simple physical description of what the conductor size actually is in real world units. Are you not from this planet? :D
 
You might want to explain the ISO 216 paper sizes :) (A0, A1, A2, A3, A4....)

-Jon

There actually is a nice feature to that size series. The dimensions are set up, so that the long dimension = sqrt(2)*short dimension. This way, when you append one size to itself, the aspect ratio stays the same. So A3 is twice the size of A4, and has the same aspect ratio. 11x17 is also twice the size of 8.5x11, but 11x17 is much narrower than 8.5x11.

A0 is defined as having an area of 1 m^2. Every number increment, is half the long dimension of the previous.
http://www.amc-photographics.com/optimised/paper-sizes-large.jpg
 
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