With the 4.1 release of DraftLogic Electrical in October 2013, you now have more granular control over which motors show up on the Single Line Diagram.
There is a new parameter in the 'Motors' parameters category, 'Motor Display on Single Line Minimum FLA' for you to set the FLA cutoff for motors to be shown. This value is the minimum FLA for a motor to appear the Single Line Diagram. As before, MDP & MCC motors are always shown.
If you are wondering how a motor that you did not specify FLA gets such value, DraftLogic Electrical takes care of this for you. Once you circuit a motor and run any report that triggers the Load Calculator (i.e. Bill of Materials, Panel Schedule, Single Line), the motor's FLA will be calculated regardless of whether you specified wattage, horsepower, MCA, or any other method of indicating the motor's electrical requirements.