Autodesk Revit MEP

[#1]

I have a 3 Phase 3 wire transformer with a 480v delta primary voltage. Is there anyway to circuit this up to the switch gear without a neutral wire? I have created a 480v Delta 3 wire distribution system in the electrical settings and assigned it to the transformer yet still it shows a 3 hot conductors and a neutral??

[#2]

Have you tried selecting the primary side wire and changing the neutral count in the properties pallete to "0"?

[#3]

I can change the tick marks, but as far as voltage drop and wire size calcs, Revit still includes the neutral.

[#4]

Did this ever get resolved?  Seems to still be an issue (Revit MEP 2012).  Revit doesn't give you the ability to edit the wire count (it's greyed out).