
AutoCAD External References, or Xrefs, enable users to insert various files such as images, PDFs, and drawings into their projects. Xrefs are particularly useful when multiple people are working on a project, as it allows each person to work on a specific component that can be integrated into one component using the Xref feature. When it comes to updating Xrefs in AutoCAD Electrical, there are a few methods that can be used. One way is to use the Reference Manager, a stand-alone application with its own Help system. Another way is to update the Xref paths by right-clicking on the unresolved reference in the External References palette and selecting Change Path. Additionally, users can also reload the Xref by selecting the reference name and right-clicking to reload.
| Characteristics | Values |
|---|---|
| What are AutoCAD External References (Xrefs)? | Enable you to insert various files such as DWG, images, PDFs, and point cloud data, into your drawings. |
| How to use Xref? | Set up the Host Drawing, start by creating a new drawing for the building's layout plan, designated as the "host drawing" as this will serve as the foundation for integrating external references. |
| How to import Xref drawings? | Run the XREF command to make the external reference palette visible. Start the ATTACH command and then, in the Select Reference File window, select the image that you want to import. |
| How to update an attached Xref? | Click View tab > Palettes panel > External References Palette. Find the reference name that you want to reload, right-click, and click Reload. |
| How to update Xref drawings after copying the project? | Go to the drawing, detach the old project drawing location and load the new one. |
| How to update Xref paths? | Click on the first option in the AutoCAD warning, using the XREF command. Navigate to the Insert tab > Reference panel > More settings. Update paths by right-clicking on the unresolved reference in the "External References" palette. |
| How to use Reference Manager? | Click Start menu (Windows) (All) Programs Autodesk AutoCAD Reference Manager. |
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What You'll Learn

Using the External References palette
The External References palette in AutoCAD Electrical is a powerful tool for organizing, displaying, and managing referenced files such as DWG files (xrefs), DWF, DWFx, PDF, or DGN underlays, raster images, and point clouds. It provides users with a range of options to work with these files efficiently.
To access the External References palette, you can navigate to the “View” tab, then select the “Palettes” panel, and choose “External References Palette”. Alternatively, you can use the XREF command by either clicking on the first option in the AutoCAD warning or navigating to the “Insert” tab, selecting the “Reference” panel, and choosing “More settings” from the dropdown arrow.
Once you have accessed the External References palette, you can perform various functions. For example, you can attach files to the current drawing by selecting the desired format from the list, which will open the “Select Reference File” dialog box. Here, you can browse and select the file you want to attach.
The palette also allows you to reload or update referenced files. If a referenced file has been modified, you can reload it by right-clicking on the reference name and selecting “Reload”. This will reflect the updated changes in the referenced file. Additionally, you can update the paths of unresolved references by right-clicking, selecting “Change Path”, and browsing to the correct location of the file.
The External References palette provides a visual representation of your referenced files. It displays information about the selected file, such as its name, path, and a preview image. You can switch between a detailed display and a thumbnail preview using the buttons available. The palette also offers shortcut menus that provide additional options for working with the files, giving you quick access to frequently used functions.
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Updating Xref paths
To update Xref paths, follow these steps:
- Navigate to the "Insert" tab, then click on the "Reference" panel and select "External References" from the menu. This will open the External References palette, displaying all the external references added to your drawing.
- In the External References palette, right-click on the reference name that you want to update. This will open a menu with several options.
- Select the Reload option from the menu. If the drawing you selected has been modified since you opened your drawing, the xref will automatically reload, reflecting the updated changes.
- After reloading the file, a revision cloud will appear, highlighting the modifications made. Review these changes, and if you are satisfied, click on the "OK" button to accept the updates.
It's important to note that you can also access the External References palette by clicking on the first option in the AutoCAD warning using the XREF command. Additionally, ensure that relative paths are used if files are moved within the project directory to avoid breaking links.
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Attaching and detaching Xrefs
To attach an Xref, start by setting up the Host Drawing, which serves as the foundation for integrating external references. You can then attach various files such as DWG, images, PDFs, and point cloud data into your drawings. To do this, use the ATTACH command and select the desired file in the "Select Reference File" window. AutoCAD will remember the initial settings specified under the "Attach External Reference" window, so you can repeat the procedure for additional Xref files.
You can also run the XREF command to access the External References palette and view all the details related to external references added to the drawing. This can also be accessed by navigating to the Insert tab, then the Reference panel, and clicking "More settings."
To detach an Xref, you can use the "`Detach`" option, which permanently deletes the external reference from the host drawing. Alternatively, the "Unload" option removes the file temporarily, and you can reload it later if needed.
It's important to note that if an Xref doesn't detach, it may be locked or nested within another Xref within the drawing. In such cases, you may need to manually delete or change your Overlay/Attachment options.
Additionally, when working with Xref files, you can use the Clip option to mask certain information. Simply select the "Create clipping boundary" option within the External Reference contextual ribbon and choose your preferred boundary type, such as Rectangle or polyline.
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Reloading an Xref
To reload an Xref, follow these steps:
- Navigate to the "External References" palette by clicking on the "View" tab, then the "Palettes" panel, and finally selecting "External References."
- In the "External References" palette, find and select the reference name you want to reload. You can do this by right-clicking on the unresolved reference and selecting "Change Path" to browse to the correct location of the file. Ensure that relative paths are used if files are moved within the project directory.
- Once you have selected the correct reference, right-click on it and simply click "Reload." Your Xref will now be reloaded with any changes made since you opened your drawing reflected in the update.
- After reloading the file, a revision cloud will appear, highlighting the modifications made. If you are satisfied with the changes, click on the green tick or "Okay" to accept the updates.
By following these steps, you can easily reload and update your Xrefs in AutoCAD Electrical, ensuring that your drawings are current and accurate.
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Using the Reference Manager
The Reference Manager is a stand-alone application with its own Help system. It is intended primarily for CAD managers who have a thorough understanding of paths. It is used to change multiple paths at once, and users are advised that their actions cannot be undone.
To access the Reference Manager, click on the Start menu (Windows) (All) Programs Autodesk AutoCAD Reference Manager. If you are working on a network, the application may not have been installed on your computer.
The Reference Manager is a useful tool for resetting Xref paths. It is important to note that the Reference Manager should be used with caution, especially when working on a network, as it can significantly impact multiple paths simultaneously.
When using the Reference Manager, it is essential to have a clear understanding of the pathing options available in the normal REFERENCE command. This will help ensure that you are using the tool correctly and effectively.
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Frequently asked questions
Click on the "Insert" menu, then External References. In the External References palette, select the reference name you want to reload, right-click, and click "Reload".
You can access the External References by clicking on the first option in the AutoCAD warning, using the XREF command. Then, update paths by right-clicking on the unresolved reference in the "External References" palette.
Repeat the same procedure for the electrical plan as you would for plumbing, with care that your importing scale is the same for all Xref drawings. Select your insertion point using the available coordinates option.
Simply reload the Xref to reflect the updated changes.





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