You can use the Symbol Builder to create an AutoCAD Electrical symbol easily. This utility builds a smart schematic symbol by either adding AutoCAD Electrical attributes to the geometry of the symbol, or by converting text entities to AutoCAD Electrical attributes. You can also use AutoCAD attribute definition and editing commands to do the same thing. This tool makes the task easier because you quickly pick and place attributes. It tracks what attributes are present and checks your work to make sure that any required attributes are not omitted.
Note: If you exit out of the Symbol Builder, restart it. On the Select Symbol/Objects dialog box, click Select objects and select any graphics and attributes you added so far. You can then start from where you left off.
Create a parent schematic symbol
Tip: It is easiest to draw it in the white space on the left-hand side of the drawing.