By default, electrical wiring is displayed using the Electrical Power Distribution line style, which is a brown, dashed line. You can select a different line style for selected wiring segments if you want. For example, you may want to select the Telephone line style for your telephone lines.
To change the line style of wiring:
Select one of the line segments you want to change. Use Shift+click to select the remaining segments in the line.
Right-click and select Properties, or select Edit > Modify Elements > Properties.
In the Line Styles dialog, select the line style you want to use.
If you want to edit a line style, click one of the swatches to access the Edit Line Styles dialog. To add a new line style to the list, select Line Style > Add Line Style.
Click OK. The line style is updated in your drawing.