That is true but it is not common that you will have to figure out that number on your own without using this formula to solve for CM. To find CM (Circular mils) in the codebook go to Chapter 9 Table 8. In the first column you will see Area, and below it is Circular mils that correlates to each wire gauge to the left.
@@jarodvelectric7431 that's more correct because more people are watching sir so you must pay attention on the correct information so as not to mislead the beginner. thanks for the correction
@@manuellastrollo2168 Yeah I agree but it was non intentional. The reason I used 12 is because I went to school for this and they taught me the number was 12. This is why it is always good to double check what you are being taught to make sure it is correct.
You can explain cm
That is true but it is not common that you will have to figure out that number on your own without using this formula to solve for CM. To find CM (Circular mils) in the codebook go to Chapter 9 Table 8. In the first column you will see Area, and below it is Circular mils that correlates to each wire gauge to the left.
sir what is the K value for Al?
copper is 12.9, aluminum is 21.2
I should have used 12.9 for copper in this video because that is what you do in real life.
@@jarodvelectric7431 that's more correct because more people are watching sir so you must pay attention on the correct information so as not to mislead the beginner. thanks for the correction
@@manuellastrollo2168 Yeah I agree but it was non intentional. The reason I used 12 is because I went to school for this and they taught me the number was 12. This is why it is always good to double check what you are being taught to make sure it is correct.
what if it's 3 phase?
Then instead of 2 K I L / CM ... it is the square root of three in place of 2. √3 K I L / CM
Square root of three is something you will often see used in 3 phased systems. The number used is 1.73 or a step further 1.732.
Do you have an UGLYs book? It has all the formulas in it