The LoadClassification Abbreviations used in the Electrical System. 
   Namespace:   Autodesk.Revit.DB.Electrical  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 21.0.0.0 (21.1.1.109) 
  Since:  2021 
Syntax
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Remarks
 This property is used to retrieve the LoadClassification Abbreviations of the Electrical System. There may be one or more load classification in use in which case they will be semi-colon delimited.