To change the text included in the default receptacle labels, go to
DM Electrical
CustomizationOptionsEdit Project List
Expand the Receptacle Labels section of the Design Master Electrical Options dialog box.
To change the displayed receptacle label, double-click on the value you wish to change under the Value column. You may type in the label as you wish it to appear on the drawing.
Press OK when you have finished setting the receptacle label values.
From now on, all new receptacles will display the updated labels as they are inserted on the drawing. You must run the Coordinate Drawing and Database command to update the labels on any receptacles placed on the drawing before the receptacle labels customization was set.