Step-by-step guide

Identify, create, and edit electrical circuits.

Open the Revit project file E01_01.rvt.
In the Project Browser, set the current view to Power > Floor Plans > 1 – Power.

To check the project for unassigned elements:

Right-click in the drawing area and choose Browsers > System Browser.

The Revit interface with the current view 1-Power highlighted in the Project Browser; and in the drawing area, Browsers selected in the shortcut menu, with System Browser selected in the flyout.

In the System Browser, expand the Unassigned branch.
Expand Electrical.
Expand Power.

The receptacles and lighting fixtures under Power need to be assigned to a circuit.

In the System Browser, Unassigned, Electrical, and Power branches expanded, with unassigned receptacles and lighting fixtures highlighted in red.

To assign the duplex receptacles to a circuit:

In the System Browser, select the 8 Duplex Receptacles.

The receptacles appear highlighted in the kitchen area of the floor plan, and the ribbon switches to the Modify | Electrical Fixtures contextual tab.

From the ribbon, Create Systems panel, click Power.

8 unassigned receptacles highlighted in the System Browser and in the floor plan, and on the Modify | Electrical Fixtures contextual tab, Power selected.

Expand the Panel drop-down and select LP-1 as the panel for the circuit.

The receptacles no longer appear in the System Browser as unassigned, and in the floor plan, the receptacles now appear connected.

In the System Browser, the receptacles no longer in the unassigned list; and in the floor plan, the receptacles are connected by dotted lines.

The System Browser shows that some of the lighting fixtures are also unassigned.

From the Project Browser, open the view Lighting > Floor Plans > 1 – Lighting.
In the System Browser, select the four Plain Recessed Lighting Fixtures.

The lighting fixtures appear highlighted in the lower-right room of the floor plan.

Press ESC to clear the selection.

To add the four plain recessed lighting fixtures to an existing circuit:

From the room to the left of the four fixtures, select a lighting fixture.

In the floor plan, in the room to the left of the four unassigned lighting fixtures, a lighting fixture selected.

In the ribbon, Electrical Circuits tab, System Tools panel, click Edit Circuit.
From the ribbon, Edit Circuit panel, click Add to Circuit.
In the lower-right room of the floor plan, pick one of the four unassigned plain recessed lighting fixtures.

A warning message indicates that 80% of the defined rating has been exceeded for the circuit.

In the floor plan, the fixtures on the circuit and one fixture to be assigned appear highlighted, with a warning message that 80% of the defined rating has been exceeded for the circuit.

Close the warning message.
From the ribbon, Mode panel, click Cancel Editing Circuit.

In this case, create a new circuit:

From the floor plan, select the four unassigned lighting fixtures.
Repeat steps 8 and 9 to create a circuit connected to LP-1.
With the new circuit still highlighted, in the ribbon, click Edit Circuit.

Now, move the 12 lighting fixtures in the two rooms to the left over to the newly created circuit:

From the ribbon, click Add to Circuit.
Click the drawing area and drag to draw a selection box around the 12 lighting fixtures.
Review and Close the warning message.

In the floor plan, 6 fixtures in each of 2 rooms selected to be moved to the new circuit, with a message warning that some selected elements are part of other circuits and will be moved to the new one.

In the ribbon, click Finish Editing Circuit.

Back in the System Browser, the final items that need to be connected to a circuit are the lights for the parking lot. To create another circuit:

On the right side of the drawing area, click in the parking lot and drag to select the five Street Light fixtures.

In the parking lot area of the plan view, a selection window is being drawn around the five Street Light fixtures.

Repeat steps 8 and 9 to connect the new circuit to LP-1.

The warning message indicates there are not enough slots on LP-1 for this circuit.

Click Cancel to close the window.

To view the Properties for LP-1:

Switch the view to 1 – Power.
Zoom into the view and select panel board LP-1.

In a zoomed in view of the plan, selecting panel board LP-1.

Note that the maximum number of single pole breakers is currently set to 6.

Increase the Max Number to 12.

In Properties, under<br>Electrical - Circuiting, the Max number increased to 12.

The exterior lighting can now be connected to LP-1.

Return to the view 1 – Lighting.
Position your cursor over a lighting fixture and press the TAB key to highlight the circuit.
Click to select the circuit.

In the parking lot area of the plan view, the selected circuit for the five Street Light fixtures represented by dotted lines.

From the ribbon, expand the Panel drop-down and select LP-1.

To review the rating for the new circuit:

Repeat steps 33-34 to select the circuit.
In the Properties panel, scroll down to see a Rating of 20A.
Press ESC to deselect the circuit.

To access the electrical settings for this project:

Type “ES” to open the Electrical Settings window, where the default circuit rating for all new circuits is set at 20A.

In the Electrical Settings window, the Circuit Rating set to the default 20A.

Close the Electrical Settings window.

To change the rating of the parking lot circuit:

Repeat steps 33-34 to select the exterior lighting circuit.
From Properties, set the circuit rating to 30A.

Press ESC to deselect the circuit.

A final review of the System Browser shows that there are no unassigned receptacles or lighting fixtures in the project.

Save the project.

Circuits and wiring

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