Just seeing what the opinion of others is with information on voltage drop in the CEC. Tables D3&D4 are great but there is no table for three phase. I wonder why they didn't put a table or some information to use so you can calculate the voltage drop. The formula VD= (1.73)(K)(L)(I) divided by CM is nowhere to be found in the CEC. I have not found the K values at different temperatures in the CEC. Also in the CEC there is no longer the CM of the wire, Table D5 only gives the conductor area in mm2. I know that there used to be more information on this matter in older code books but was taken out of newer ones. Why don't they put a table in the CEC that displays the metric formula for calculating voltage drop in three phase circuits along with the K values of conductors at different temperatures? Maybe I'm just missing a page or something. What do you guys think? Hopefully this starts people talking on this great site.
I know that we don't have to calculate this all the time but it would still be nice to be able to do this with the CEC. With information provided in the book and not relying on a computer. Times it by 1.15 works great but what if there is a different abient temp. and K values change. All I am saying is that there should be more info in the book.
#101998 - 07/25/0409:52 AMRe: What Do People Think About Doing Voltage Drop Calculations With The CEC