Panels and One-Line Devices

This section describes the options available in the Panels and One-Line Devices group in the Design Master Electrical Options dialog box.

Customization--Options.Edit Project List.Panels and OLDs

Default one-line device AIC: When a new one-line device 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 high are highlighted in the fault schedule. See the Fault Schedule section for more information on this option.

Voltage Drop Schedule: Highlight voltage drops that are too high: 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 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.

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 one-line device schedule blocks. See the One-Line Device 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 panel and other one-line device 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.

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.

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


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