wapperdude,
That's an interesting solution. Great use of cascading IF's. However, I wonder if this solution will work for Tulga.
Tulga,
Are the cable lengths represented in Shape Data, Shape Text, or Geometry? Wapperdude's solution would work wonderfully if the lengths are determined by geometry. Most of my network drawings aren't geometrically sound, though... :-)
I would take another look at Data Graphics & Color by Value. Set the Data Field to "=Width" if the drawings are geometrically sound. If not, you could use the any other data field. You could do the same thing in the Shapesheet, but its less elegant.
Thanks to both of you for an interesting challenge.
-Will