1. Press the Cable sizing icon to run the add-in (see image one).
2. Select Distribution Board in Check List (see image Two). 
3. You can select Custom Cable Sizing or leave the selection as Default Circuit Sizing (see image three).
4. If you select Custom Cable Sizing you will be able to enter the following value (see image four).

• • Load Type
  • Circuit MCB Breaker Rating (must be a Number “integer”)
  • Wire Size
  • Wire ECC

5. Then press the Ok button (see image Five).

The installer that ran when you downloaded this app/plug-in from Autodesk App Store will start installing the app/plug-in. OR, simply double-click the downloaded installer to install the app/plugin. To uninstall this plug-in, exit the Autodesk product if you are currently running it, simply rerun the installer, and select the "Uninstall" button. OR, click Control Panel > Programs > Programs and Features (Windows 7/8.1/10) and uninstall as you would any other application from your system.