Branch circuit device: Equipment connection

These values are displayed when the Device Type is set to Branch circuit device: Equipment connection.

Family Edit Dialog Box

family-edit-branch-circuit-device-equipment-connection-dialog-box

Family Settings

The settings for the family. The values set in this section are used unless they are overridden by settings in the bottom Type Settings section.

Device Type: The type of electrical device. Each type has different values that can be set. Displayed here are the settings for Branch circuit device: Equipment connection.

Circuit Description: The description that will be displayed on circuits to which this device is connected.

Load: The load defined on the connectors in the family. This value is read-only and cannot be changed in this dialog box. Modify the values in the connectors to change this value.

Isolated Ground: Whether the equipment needs an isolated ground wire. If set to Yes, an isolated ground wire is included in the wire callout for the branch circuit connected to this device.

OCP Graphic: The graphic family used for the upstream OCP when the device is inserted on the one-line diagram. The values in this list are based upon the One-Line Diagram Feeder Graphics command.

Use upstream distribution equipment graphic: The Default Downstream OCP Graphic and Default Downstream OCP Type set in the upstream distribution equipment will be used.

OCP Type: The graphic type used for the upstream OCP. The values in this list are based upon the selected OCP Graphic.

Feeder ID Graphic: The graphic family used for the feeder ID when the device is inserted on the one-line diagram. The values in this list are based upon the One-Line Diagram Feeder Graphics command.

Default feeder group: The feeder ID graphic set for the group in the Project Feeder ID Schedule will be used.

Feeder ID Type: The graphic type used for the feeder ID. The values in this list are based upon the selected Feeder ID Graphic.

Show on AutoCAD One-Line Diagram: Whether to show the instance as an equipment connection on the one-line diagram created using the Export to AutoCAD command. This setting can be overridden for each instance using the Instance Edit command.

FLA / BCSC: The full load amps (FLA) or branch circuit selection current (BCSC). BCSC is used to size the breaker and wires for motor-compressors (see NEC 440.22 (A) & (C), NEC 440.32 & 33). FLA is used to size breakers for motors (see NEC 430.52).

MCA: The minimum circuit amps (MCA). Used to size wires for multimotors (see NEC 440.35).

MOCP: The maximum overcurrent protection (MOCP). Used to size the breaker for motor-compressors (see NEC 440.22(A) & (C)).

OCP Trip: How to size the breaker for the branch circuit to which the equipment is connected.

Size automatically (based upon load): The breaker is sized based upon 125% of the connected load. FLA / BCSC, MCA, and MOCP are all ignored.
Motor-Compressor, <= MOCP: The breaker is sized to be less than the MOCP (see NEC 440.22(C)).
Motor-Compressor, <= 175% of BCSC, <= MOCP: The breaker is sized to be less than 175% of the BCSC and less than the MOCP (see NEC 440.22(A) & (C)).
Motor-Compressor, <= 225% of BCSC, <= MOCP: The breaker is sized to be less than 225% of the BCSC and less than the MOCP (see NEC 440.22(A) & (C)).
Motor, Dual Element Fuse, <= 175% of FLA: The breaker is sized to be less than 175% of the FLA (see NEC 430.52).
Motor, Dual Element Fuse, <= 225% of FLA: The breaker is sized to be less than 225% of the FLA (see NEC 430.52(C)(1) Exception No.2(2)).
Motor, Inverse Time Breaker, <= 250% of FLA: The breaker is sized to be less than 250% of the FLA (see NEC 430.52).
Custom: The breaker size is set to the value you specify. Enter a value that corresponds to an ampacity in the Wire Ampacities command in your project.

Conductor: How to size the conductors for the branch circuit to which the equipment is connected.

Size automatically (based upon breaker, or loads if breaker based upon motor): The conductors are sized automatically. The conductors are sized to match the breaker, unless the OCP Trip is set to one of the Motor choices. Then the conductors are sized to match the load.
Multimotor, >= MCA: The conductors are sized to be greater than the MCA (see NEC 440.35).
Motor-Compressor, >= 100% of BCSC + 25% of max BCSC: The conductors are sized to be greater than 100% of the combined BCSC, plus 25% of the largest BCSC on the circuit (see NEC 440.32 & 33).
Size based upon loads: The conductors are sized based upon 125% of the connected load.
Size based upon breaker: The conductors are sized based upon the breaker size.
Custom: The wire size is set to the value you specify. Enter a value that corresponds to a Wire Size value set in the Wire Sizes command in your project.

Motor Multiplier: The multiplier applied to the motor load when it is used during fault calculations.

Motor X/R Ratio: The X/R ratio of the motor load when it is used during fault calculations.

Type Settings

The settings for specific types in the family. Values set here override the values set in the Family Settings section.

Circuit Description: The circuit description for this family type.

Same as Family Settings: Use the circuit description set in the Family Settings section.
Set in Type Settings: Enter a circuit description in the field provided.

Override Equipment Values: Whether to override the equipment connection values set in the Family Settings section for this family type.


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