Graphics Programs Reference
In-Depth Information
the industry. For example, you could create a three-phase system and set
the line-to-line voltage to 120 volts and the line-to-ground voltage to 277
volts. Use caution when creating distribution systems because they are very
important for creating circuits for devices and equipment. Voltages can be
assigned only as line-to-line or line-to-ground if they have been defined
in the Voltage Definitions section. Figure 14.5 shows some examples of
distribution systems created for a project.
Figure 14.5 Distribution systems for a project
Load Calculations
In the Load Calculations section, you can establish demand factors and load
classifications applied to the circuits in your project. The load classifications
of the connectors in your electrical families determine which demand factor
they will take on in your project. In this section, you can deselect the check
box so that calculations for loads in spaces will not be done, which can
improve the performance of your project. However, if you are scheduling
spaces to view the engineering data they hold, you will not see any values
derived from the model. You can use preset values if desired. To see the
actual values based on the data within your model components, this setting
must be turned on.
When you click the Load Classifications button in this section, the Load
Classifications dialog box opens. In this dialog box, you can create new load
classifications and define the demand factor used for them and a lighting or
power load class for use with spaces. The available demand factors appear
in the drop-down list, and the Demand Factors dialog box can be accessed
 
 
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