Distribution Equipment

This section describes the options available in the Distribution Equipment group in the Design Master Electrical Options dialog box.

customization--distribution-equipment-options-dialog-box

Default load calculation method: When a new distribution equipment is created, the calculation method for load types is set to this value. See the Feeder and Service Calculation Settings section for more information on this option.

Default general lighting circuit value: When a new distribution equipment is created, the default general lighting setting for circuits on the equipment is set to this value. See the Feeder and Service Calculation Settings section for more information on this option.

Default distribution equipment AIC: When a new distribution equipment is created, the AIC rating is set to this value. The value for each panel can be changed once it is created.

Fault Schedule: Highlight AIC ratings that are too low: Specify whether AIC ratings that are too low are highlighted in the fault schedule. See the Fault Schedule section for more information on this option.

Voltage Drop Schedule: Highlight voltage drops: Specify whether voltage drops that are too high are highlighted in the voltage drop schedule. See the Voltage Drop Schedule section for more information on this option.

Voltage Drop Schedule: Circuits to display: Specify which circuits to display in the voltage drop schedule. See the Voltage Drop Schedule section for more information on this option.

Voltage Drop Schedule: Warn if branch circuit voltage drop cannot be calculated: Specify whether you receive a warning if the branch circuit voltage drop cannot be calculated correctly due to circuiting errors. See the Voltage Drop Schedule section for more information on this option.

Voltage drop and transformers: There are three options for addressing transformers when calculating voltage drop.

Ignore Transformers for Voltage Drop Calculations: The voltage drop through the transformer is ignored when the voltage drop for the system is calculated. The voltage drop through the upstream feeders is carried through the transformer.
Reset Voltage Drop at Transformers: The voltage drop is set back to 0 at each transformer. The voltage drop through the transformer is ignored. The voltage drop through the upstream feeders is ignored.
Include Transformers in Voltage Drop Calculations: The voltage drop through the transformer is calculated and added to the voltage drop on the feeder. The voltage drop through the upstream feeders is carried through the transformer.

After changing the Voltage Drop and Transformers option, reinsert the voltage drop schedule on the drawing to display voltage drop numbers based upon the new setting. See the Voltage Drop Schedule section for more information on inserting the schedule.

Calculate voltage drop based upon 80% of panel capacity: Specify whether calculations for the voltage drop schedule are based on 80% of panel capacity. See the Voltage Drop Schedule section for more information on this option.

Panel schedule load display units: This option controls the units used for displaying loads on panel schedules. Changing this value will change the numbers, but it will not change the column labels and headers. You will need to manually customize the distribution equipment schedule blocks. See the Distribution Equipment Schedule Blocks section for more information.

kVA: The loads are displayed in kVA.
VA: The loads are displayed in VA.
Amps: The loads are displayed in amps.

Show fixed number of decimals in panel schedules: This option controls how values are displayed in distribution equipment schedules.

Yes: The full value for all numbers will be displayed. All numbers will include a specific number of digits after the decimal.
No: All number on the panel schedule will be rounded to 3 significant digits.

If the Show fixed number of decimals in panel schedules option is set to No, this option is ignored and not used.

Number of decimals to display in panel schedule: If the Show fixed number of decimals in panel schedules option is set to Yes, this option specifies the number of digits after the decimal to display.

Feeder length calculation method: When a new distribution equipment is created, the calculation method for feeder length is set to this value. See the Feeder Length Settings section for more information on this option.

Circuit length calculation method: When a new distribution equipment is created, the calculation method for circuit length is set to this value. See the Set Circuit Information section for more information on this option.

Building angle: When a new distribution equipment is created, the building angle used for feeder and circuit length calculations is set to this value. See the Feeder Length Settings section for more information on this option.

Extra distance added to feeder length: This is the extra length of wire included in feeder lengths to account for the wire used for panel connections. It is used in the fault calculation, voltage drop calculation, and takeoffs. See the Distance Input Format section for more information on specifying this length.

Ignore extra distance on feeders shorter than this: The calculated distance between two panels includes an additional length of wire to account for terminating the wires. The additional wire is not necessary for panels that are close to each other and the extra length will be ignored when it is shorter than this specified value. See the Distance Input Format section for more information on specifying this length.

Elevation input: When distribution equipment is inserted on the drawing, the elevation input method is set to this value. See the Elevation section for more information on this option.

Warn if distribution equipment is overloaded: Whether a warning dialog box appears if you have distribution equipment in the project that is overloaded. This warning appears when using the Insert Distribution Equipment Schedule command.

This setting will affect the project for all users. To change this setting for a single user, see the Electrical User Options section for more information.

Distribution equipment overloaded threshold (% of panel capacity): When the load on a distribution equipment exceeds this value as a percentage of the equipment load capacity, the equipment will be considered overloaded.


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