Mike-
You can actually achieve this in any drawing, it is a matter of modifying the Display Configuration.
Here are the steps assuming you are In a 'default' template drawing:
1. Switch to a 3D view,
2. Open Display Manager (DM).
3. You see should under Configurations > MEP Design > MEP Design Model is Bold (this indicates it is the 'current' display set utilized for display)
4. Select the MEP Design Model set.
5. On the Right side of DM, select the Display Representation Control tab.
6. Check the boxes at the intersection of :
a. Cable Tray / Cable Tray Model
b. Cable Tray Fitting / Cable Tray Fitting Model.
7. On the Left side of DM, browse to and select: Representations By Object > Cable Tray > Model
8. On the Right side of DM, on the Layer/Color/Linetype tab, Turn off the 'Visible' setting for 'Contour'.
7. On the Left side of DM, browse to and select: Representations By Object > Cable Tray Fitting > Model
8. On the Right side of DM, on the Layer/Color/Linetype tab, Turn off the 'Visible' setting for 'Contour'.
Martin Schmid
Product Line Manager
Mechanical Detailing and Electrical Design
Architecture, Engineering, and Construction
Autodesk, Inc.