Circuiting

The Circuiting command is used to manage all of the devices and loads connected to circuits on your one-line devices.

To open the Circuiting dialog, go to

DM Electrical->Circuiting and Homeruns->Circuiting

Circuiting Dialog Box

Circuiting and Homeruns--Circuiting dialog box

The Circuiting dialog is divided into two main sections. On the left, you have the a list of circuits associated with a one-line device. You choose the circuit that you are working with here. On the right, you have the Fixed Loads section that allows you to modify the circuit you are working with.

Selected Circuit: Displays information about the currently selected circuit. Includes the circuit callout, the breaker size, the circuit description, the load in kVA and amps, and the size of the wire.

Select Circuit from Drawing: Press this button to set the active circuit based upon a device on the drawing. The dialog box will close and you will be prompted to select a device.

Select device on circuit to make current:

After you select a device, the Circuiting dialog box will be opened. The circuit the selected device is connected to will be active.

One-Line Device: The active one-line device. The circuits listed are associated with the one-line device displayed. Changing the one-line device will display new circuits in the circuit lists.

Information about the active one-line device is displayed below this field. The voltage, total connected load in kVA, and connected load in amps on each phase are all displayed. The time the loads on the one-line device were calculated is also displayed. If any loads have been added to the one-line device since then, the loads should be recalculated.

Recalculate Load Total: Press this button to recalculate the load total on the active one-line device. The total connected load in kVA and connected load in amps on each phase will be updated to match the current loads connected to the one-line device and any one-line devices connected to it.

Insert Circuit: Press this button to insert a new circuit in the active one-line device. A single-pole circuit will be inserted in the circuit list at the location of the active circuit. The active circuit and all the circuits below it will be shifted down.

Before Insertion

insert_circuit_before

After Insertion

insert_circuit_after

If there are no spaces available below the active circuit, no circuit will be inserted.

Compress Circuits: Press this button to move all the spaces in a one-line device to the bottom of the circuit lists. The order of all the circuits with loads on them will be the same. Any circuits that are spaces between circuits with loads will have been removed.

Before Compression

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After Compression

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Remove Circuit: Press this button to remove a circuit that is a space from the active one-line device. All of the circuits below the selected circuit will be shifted up in the circuit list. A new space circuit will be inserted at the bottom of the circuit list. This button cannot be used if the circuit has any devices connected to it or any fixed loads set in it.

Swap and Copy Circuits: Press this button to open the Swap and Copy Circuits dialog box with the currently selected circuit active. the Swap and Copy Circuits section for more information.

Circuit Lists: There are two lists of circuits in the Circuiting dialog box. Panels will display odd circuits in the list on the left and even circuits in the list on the right. All other one-line device types will display their circuits in the list on the left. Only one circuit in the two lists can be selected at the same time. The selected circuit is used in the rest of the dialog box.

Circuit Devices: Press this button to connect devices on the drawing to the currently selected circuit. See the Circuit Devices section for more information.

Circuit to Phase: Press this button to connect devices on the drawing to a specific phase of the currently selected circuit. See the Circuit to Phase section for more information.

Draw Homerun and Loops: Press this button to draw a homerun and loops on devices on the drawing. See the Draw Homeruns and Loops section for more information.

Draw Homerun: Press this button to draw a homerun on a device on the drawing. See the Draw Homeruns Only section for more information.

Find Circuit: Press this button to locate devices on the currently selected circuit. If there are any on the current drawing, they will be highlighted. If there are devices on another drawing but not the current drawing, you will have the option to open the other drawing. This button cannot be used on circuits that do not have any devices connected to them.

Uncircuit Devices: Press this button to disconnect devices on the drawing from the circuit they are connected to. See the Uncircuit Devices section for more information.

Recalculate Selected Circuit: Press this button to recalculated the circuit that is currently selected. The load on the circuit will be recalculated based upon the connected devices. The breaker and wire size will be recalculated based upon the newly calculated load.

Recalculate All Circuits: Press this button to recalculated all the circuits on the currently selected one-line device. The loads on the circuits will be recalculated based upon the connected devices. The breaker and wire sizes will be recalculated based upon the newly calculated loads.

Circuit Loads and Fixed Load Inputs

This section is used to customize the settings for the currently selected circuit. All the values displayed apply to the currently selected circuit only. Any changes to the value are automatically saved to the circuit.

The list of breaker sizes available can be customized in the Wire Sizing dialog box. Each breaker size has a Wire Size and Equipment Ground that is used to choose the size the wires. See the Wire Sizing section for more information.

Change # of Poles: Press the button to change the number of poles of the currently selected circuit. See the Change # of Poles section for more information.

Breaker Size: The size of the breaker of the currently selected circuit.

Size Automatically: The breaker size is chosen automatically based upon the load connected to the circuit. The size is based upon 125% of the continuous load, and 100% or 125% of the noncontinuous load, depending upon the setting of the Size breakers to 100% of noncontinuous load option. See the Circuits, Load Types, and Wire Sizes section for more information on this option.
None: The circuit does not have a breaker. The breaker column in the one-line device schedule will display a slash and the number of poles (/1 or /2 or /3). No breaker size will be displayed.
Specific Size: The selected breaker size is used for the circuit.

Conductor Amps: Sets the size of the hot wires of the currently selected circuit.

Size Automatically: The hot wires are sized based upon the Breaker Size.
None: The circuit does not have a conductor wire. The wire callout for the circuit will be blank.
Specific Breaker Size: The hot wires are sized to match the breaker size chosen from the list.

Ground: The size of the ground wire of the currently selected circuit.

Size Automatically: The ground wire is sized based upon the Equipment Ground setting for the larger of the two breaker sizes specified in the Breaker Size and Conductor Amps fields. The ground wire will never be larger than the conductor wires.
None: No ground wire is included in the circuit.
Specific Breaker Size: The ground wire is sized to match the wire size chosen from the list.

Neutral: Sets the size of the neutral wire of the currently selected circuit. If the one-line device does not have a neutral, this field is disabled and set to None.

Size Automatically: The neutral wire is the same size as the phase wires as specified in the Conductor Amps field.
None: No neutral wire is included in the circuit. If the devices on the circuit require a neutral wire, this option is not available.
Specific Breaker Size: The neutral wire is sized to match the wire size chosen from the list.

Conduit Size: The size of the conduit of the currently selected circuit. The conduit fill percentage is displayed next to the Conduit Size field. Changing the conduit size will update the fill percentage.

Size Automatically: The conduit is sized automatically based upon the wires in the circuit. All conduits are sized using a 40% conduit fill (NEC Table 1).
None: No conduit is included for the circuit.
Specific Breaker Size: The conduit is sized to match the conduit size chosen from the list.

MCC Starter Size: The motor control center starter size. This field is enabled for circuits on motor control centers. It is disabled for all other one-line device types. The value is displayed in the motor control center schedule.

MCC Description: The motor control center description. This field is enabled for circuits on motor control centers. It is disabled for all other one-line device types. The value is displayed in the motor control center schedule.

Layer System: The layer system of the currently selected circuit. This layer system controls the layer that is used for the circuit callouts, homerun, and loops on the plan. It also controls the layer of the feeder wire on the one-line riser diagram if this circuit is shown there.

Underground: Whether or not the circuit is underground. Different layers are used for aboveground and underground loops. The layer used for underground loops defaults to a dashed linetype, but this can be changed using the customization commands.

Starting Phase: Sets the starting phase of the circuit. This value can be used on 1 and 2 pole circuits to balance the loads on a one-line device.

This field is disabled for panels. The starting phase for each circuit on a panel is fixed.

Description: An additional description for the circuit that is shown on the one-line device schedule. This value is added before any other descriptions on the circuit from connected devices. To change the description on the circuit from the devices, change the device definition.

Set Description in Other Phases: Press this button to set circuit descriptions on the second and third phase of a two or three pole circuit.

Circuiting and Homeruns--Circuiting.Set Description dialog box

Fixed Loads: Fixed loads are loads on a circuit that are not associated with a device on a drawing. You manually specify the load for each load type. Existing loads are often modeled using fixed loads. Fixed load values are added to the load of any devices connected to the circuit.

Lighting (Fixed Conn): Sets the fixed lighting load on the circuit. The load is input in kVA.

Largest Motor (Fixed Conn): Sets the fixed largest motor load on the circuit. The load is input in kVA. If a circuit has multiple motors connected to it, specify the load of the largest motor here. This will not necessarily be the largest motor on the one-line device or in the project. When the load on a one-line device is calculated, the largest of all the largest motor loads will be used as the largest motor on the one-line device.

Other Motors (Fixed Conn): Sets the fixed other motor loads on the circuit. The load is input in kVA. This load can represent multiple motors. The total can be larger than the largest motor. If a largest motor load is included on the circuit, this value will always be added to the other motor load for all of the one-line devices it is connected to. If no largest motor load is included on the circuit, this value is treated as the largest motor load.

Receptacles (Fixed Conn): Sets the fixed receptacle load on the circuit. The load is input in kVA.

Continuous (Fixed Conn): Sets the fixed continuous load on the circuit. The load is input in kVA.

Heating (Fixed Conn): Sets the fixed yeating load on the circuit. The load is input in kVA.

Non-continuous (Fixed Conn): Sets the noncontinuous lighting load on the circuit. The load is input in kVA.

Kitchen (Fixed Conn): Sets the fixed kitchen load on the circuit. The load is input in kVA.

Kitchen (Multiplier): Sets the number of pieces of kitchen equipment on the circuit. The kitchen demand factor in NEC Table 220.56 is based upon the number of pieces of kitchen equipment.

Diversified (Fixed Conn): Sets the fixed diversified load on the circuit. The load is input in kVA.

Diversified (Multiplier): Sets the multiplier for the calculated load for the diversified load.

Custom Load 1 (Fixed Conn): Sets the fixed connected load for custom load type 1 on the circuit. The load is input in kVA. The label on the dialog box will match the Custom Load Type 1 Name option. See the Circuits, Load Types, and Wire Sizes section for more information.

Custom Load 1 (Demand): Sets the fixed calculated load for custom load type 1 on the circuit. This field is enabled if the Custom Load Type 1 Calculation method is set to Variable calculated load.

Custom Load 1 (Multiplier): Sets the demand factor used to calculated the calculated load for custom load type 1 on the circuit. This field is enabled if the Custom Load Type 1 Calculation method is set to Variable demand factor.

Custom Load 2 (Fixed Conn): Sets the fixed load for custom load type 2 on the circuit. The load is input in kVA. The label on the dialog box will match the Custom Load Type 1 Name option. See the Circuits, Load Types, and Wire Sizes section for more information.

Custom Load 2 (Demand): Sets the fixed calculated load for custom load type 2 on the circuit. Sets the fixed calculated load for custom load type 2 on the circuit. This field is enabled if the Custom Load Type 2 Calculation method is set to Variable calculated load.

Custom Load 2 (Multiplier): Sets the demand factor used to calculated the calculated load for custom load type 2 on the circuit. This field is enabled if the Custom Load Type 2 Calculation method is set to Variable demand factor.

Save Fixed: Press this button to save any changes made in the Circuit Loads and Fixed Load Inputs section of the dialog box. Changes are also saved when you select a new circuit or close the dialog box.

Undo Changes: Press this button to undo any changes made in the Circuit Loads and Fixed Load Inputs section of the dialog box. The values will be restored to the settings currently stored in the database.

Clear Inputs: Press this button to reset all of the values in the Circuit Loads and Fixed Load Inputs section of the dialog box to their defaults. All the breaker and wire size fields will be set to Size Automatically. All fixed load values will be set to 0.


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