Branch circuit device: Equipment connection

When the selected family instance has the type set to Branch circuit device: Equipment connection, the following dialog box appears.

Instance Edit

edit-family-instance-equipment

Device Type: They Device Type set for the family in the Family Edit command.

Family Name: The name of the Revit family of the selected instance.

Family Type: The type of the Revit family of the selected instance.

Circuit Description: The circuit description set for the family in the Family Edit command.

Override Circuit Description: Whether or not the circuit description set in the family should be overridden for this instance. If set to Yes, enter the circuit description to use for the instance in the lower field.

Load: The load of the selected instance as set in Revit.

Show on One-Line Diagram: Whether or not to show the instance as an equipment connection on the one-line diagram.

Family default: Whether or not to show the instance is based upon the value set in the Family Edit command.
Yes: The instance will be shown on the one-line diagram.
No: The instance will not be shown on the one-line diagram.

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

Family default: The full load amps or branch circuit selection current is based upon the value set in the Family Edit command.
N/A: The default value. The device does not have a full load amps or branch circuit selection current.
Custom: Specify the value for the full load amps or branch circuit selection current in the field below.

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

Family default: The minimum circuit amps is based upon the value set in the Family Edit command.
N/A: The default value. The device does not have a minimum circuit amps.
Custom: Specify the value for the minimum circuit amps in the field below.

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

Family default: The maximum overcurrent protection is based upon the value set in the Family Edit command.
N/A: The default value. The device does not have a maximum overcurrent protection.
Custom: Specify the value for the maximum overcurrent protection in the field below.

Breaker Size: How to size the breaker for the branch circuit the equipment is connected to.

Family default: The breaker is sized based upon the value set in the Family Edit command.
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)(b)).
Motor, inverse time breaker, <= 250% of FLA: The breaker is sized to be less than 250% of the FLA (see NEC 430.52).
Specific ampacity: The breaker size is set to the specific size chosen from the list.

Wire Size: How to size the conductors for the branch circuit the equipment is connected to.

Family default: The wire is sized based upon the value set in the Family Edit command.
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 Breaker Size 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.
Specific ampacity: The wire size is set to the specific size chosen from the list.

Motor Multiplier: The multiplier used in fault calculations set in the Family Edit command.

Motor X/R Ratio: The XR ratio use in fault calculations set in the Family Edit command.


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