3 Ways to Number Cables
1.Use the Number Cables command: This command puts cable numbers on the drawing. If you have nothing selected, it numbers all circuits on the current layer. Or, you can select specific circuits and number them all at once.
2. Select all the circuits, and add all cable info inside the Object info panel.
3. You can also pick one circuit and then go to the Object Info Panel and edit the Number and Cable fields individually.