Hi, Im a Mechanical Designer that was recently thrust into the Civil world (not sure why i accepted this since i despise civil and even Autocad at this point lol) and I'm having issues with the electrical portion, especially the One-Line Diagram and im looking for any advice i can get.

The project is a fairly simple Power Distribution Upgrade for a small area; demo of existing over-head and installation of underground power.

They have requested i show the existing elements for removal one the one-line diagram with the new elements. is this typical for a one-line or schematic? if so, what is the normal way to show it?

NOTE: I have NEVER done a one-line diagram nor have i ever had to really work with them so im completely "green" in this area.

Thanks for any help and if you need more information just let me know.