We are trying to find a program that will do electricaldiagrams.  We need the program to drawladder diagrams and wiring diagrams.  Wealso need to have different drawings interact together, like how Inventordrawings do.  To if I change a wiringlocation on the master drawing all related drawings change also. 

Right now I use AutoCAD Mechanical and this process istaking forever because we are adding 3 phase to our options.  I am almost sure AutoCAD Electrical will dothis but the dealer we are working with us want us to pay $1700 and lose 1 ofour Inventor seats.

I want to know if there is a great Add-On or if AutoCAD Electricalis the best choice.

Thanks