Setting Default Customization Values
Default customization values can be set using either a Revit template or the
Revit Template
Open the project template in Revit. Use the Customization commands to make changes to the wire sizes, conduit sizes, and wire ampacities.
When you start a new project using the template, the new project will use the modified customization values.
To make changes to your default customization, open the Revit template and modify the customization settings there.
Export and Import Commands
Open a project in Revit. Use the Customization commands to make changes to the wire sizes, conduit sizes, and wire ampacities.
Save the customization to a file using the Customization→Export command.
When you start a new project, load the customization using the Customization→Import command.
To make changes, open a new project and import the customization. Modify the customization settings, then export the customization to a file again.