Q: What are some of the conventions used to create models in AutoCAD?

A: Some of the conventions are listed below:

• Photopia's coordinate system for photometry - direct light towards -Z, fluorescent lamps along Y axis for quadrilateral symmetry in North America, fluorescent lamps along X axis for bilateral symmetry. Outside North America, the fluorescent lamps should be along the X axis for quadrilateral symmetry and bilateral symmetry.
• Layer naming conventions ("REFL-", "TRAN-", "REFR-")
• SAILs must be DASHED lines
• Importing lamp models into AutoCAD - use the "DXFIN" command