Stiff's problem with the uneven load currents can be solved in a number of ways. One is the graphical approach:
Consider L-L loads of 60A and 30A, what are the line currents?
First, draw two lines intersecting at 120 degrees. Now draw tic marks one centimeter apart on each line, and number the tics.
Now SLIDE your metric RULER over the diagram and measure the distance between the 3 on one line and 6 on the other as in the attachment. The distance, 7.85cm, represents a current of 78.5A which is close enough for most purposes. The other two currents are obvious.
Yeah, I know this has been beaten to death, but I thought this was cute!
Consider L-L loads of 60A and 30A, what are the line currents?
First, draw two lines intersecting at 120 degrees. Now draw tic marks one centimeter apart on each line, and number the tics.
Now SLIDE your metric RULER over the diagram and measure the distance between the 3 on one line and 6 on the other as in the attachment. The distance, 7.85cm, represents a current of 78.5A which is close enough for most purposes. The other two currents are obvious.
Yeah, I know this has been beaten to death, but I thought this was cute!