The layer that circuit loops and homeruns are inserted on by default is controlled by the Default circuit layer system setting in the Circuits, Load Types, and Wire Sizes section of the Options menu.

Ribbon: DME: Customization->Project Customization->  Options

Pulldown Menu: DM Electrical->Customization->Options->Edit Project List

The default setting for this option is Same as Distribution Equipment. With this setting, the loops use the layer system of the panel or switchboard, not the device they are connected to.

You can also change this setting to a specific layer system. If you do this, then the loops will use the layer system you select, regardless of the layer system used by the panel or the device.

This option controls the default setting. It is also possible to change the layer system used by a specific circuit. To do this, use the Circuiting command.

Ribbon: DM Electrical->Circuiting and Homeruns->  Circuiting

Pulldown Menu: DM Electrical->Circuiting and Homeruns->Circuiting

Select the circuit for which you want to change the layer. The Layer System is set in the Circuit Information section on the right side of the dialog box. Select the layer system you want and press the Exit button.

If you change your default layer system or change the layer system of a circuit that already has loops inserted, you can use the Coordinate Drawings and Database command to update your drawing.

Ribbon: DM Electrical->Utilities->  ->Coordinate Drawings and Database

Pulldown Menu: DM Electrical->Utilities->Coordinate Drawings and Database