You can make ArcMap automatically zoom to selected features or schematic elements when you propagate a selection from a schematic to a map, or from a map to a schematic.

To do so, click the Schematic drop-down menu on the Schematic toolbar and click Schematic Options. Click the Selection tab. Check the Schematic ---> Map and the Map ---> Schematic check boxes, then click OK.

Click the Select Schematic Elements button on the Schematic Editor toolbar and select the full feeder in the diagram data frame by drawing a box with the tool. Click the Propagate Schematic Selection To Map button to locate the selected features on the map. The selection set is automatically zoomed in on the map.

Note: The propagate operation might take a few minutes as the selection contains a large amount of features.