I didn't know there were any differences between the two. Thanks for the word of caution.
		
		
	 
Rav,
Between TurboCAD and AutoCAD 
I noted that TC imports a multilater AC file 
as if it were a single layer.  
If you have a whole warehouse of equipment, 
multi-serviced load-centers, etc. 
then you will  have placed each 
'type' / 'department' / 'object collection' 
of diagrams on a different layer.  
So, when your boss imports your 11 layers into TC,
he will have a a real problem modifying things.  
Big time problem.  
For example, you have all the recepticals for Panel LA3 in one layer.
And a layer for LA2, and LA1. 
Say you have 3 Panels, located 300 feet from each other.
Say you have 511 recepticals and power outlets for equipment, 
with Red , Green, and Blue outlets located side-by-side, mingled. 
Say your recepticals are mingled throughout the whole warehouse, 
due to various phases of construction over a period of 30 years.  
Say you want to map/plot recepticals for Panel LA3 in red (highlight) 
and the others in blue and green.   
Having several layers means you can change the color in each layer.  
This map/plot would allow location of all the LA3 power outlets, 
which is an OSHA requirement.  
An example scenario / rationale could be
that if equipment at LA3.21 receptical is operating unsafely,
or the outlet device is broken & requires some maintenance, 
you will need to know which Panel is the source and kill it.  
The color coded map/plot shows this information immediately
even when Red / Green / Blue recepticals are located side-by-side 
and all the painted labeling is rubbed off from usage and traffic.
(For recepticals, the Panel is usually the 'disconnect'.) 
Hows that for a example & rationale ?
HTH. 
