Remove an existing insulation type from this temperature rating type. 
   Namespace:   Autodesk.Revit.DB.Electrical  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
Syntax
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Parameters
- insulationType
 -  Type:  Autodesk.Revit.DB.Electrical InsulationType  
Insulation type to be removed. 
Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions InvalidOperationException | The last one insulation type of project and any one which is in use by a wire type can't be removed. |