Light Fixtures

This section describes how to use light fixtures.

Common Light Fixtures Information

The values that can be specified for a light fixture are listed below.

Callout: The name of the light fixture.

Include in Schedule: This checkbox controls whether the light fixture type is displayed in the light fixture schedule that is inserted on the drawing. Most light fixture types will have this box checked. It is commonly unchecked for existing light fixture types and light fixture types that are being used to model other types of devices in your project.

Loads 1, 2, and 3: Light fixtures can have up to three different loads assigned to them. Each load can be connected to a separate circuit. If the light fixture will always be connected to a single circuit, only one load should be used. If the light fixture might be connected to multiple circuits, multiple loads should be used. A common use for multiple loads is emergency lights, where some lamps are connected to a normal circuit and other lamps are connected to an emergency circuit.

Each load can have the following values set:

Load Description: The description shown in the panel schedule for this light defaults to "LIGHTING", but may be changed to read something else.

Number of Lamps: The number of lamps (bulbs) in the light fixture.

Lamp Description: Description of the lamp if needed.

Input VA: Load of the fixture including the ballast, if applicable.

Watts/Lamp: The wattage of each lamp.

Lumens/Lamp: The number of initial lumens per lamp.

Egress Mode Lumens/Lamp: The number of initial lumens per egress mode lamp.

Lamp Depreciation: The depreciation value of each lamp (Lumens / lamp x lamp depreciation = actual lumens) Lamp depreciation may include fixture dirt or lens depreciation, where applicable.

Ballast: The type of ballast on the light fixture. Default ballasts are available in the pulldown list. To specify a ballast that is not included in the list, select Custom and enter the value in the field below.

Volts: The voltage of the light fixture.

Mounting: How the light fixtures is mounted. Default mounting types are available in the pulldown list. To specify a mounting that is not included in the list, select Custom and enter the value in the field below.

Arm Length: The length of the arm of the fixture. In photometric calculations, the light source is moved this distance from the insertion point of the light fixture block. See the Distance Input Format section for more information on specifying this elevation.

IES File: The IES file that is associated with the light fixture callout.

IES Rotation: The counter clockwise rotation of the IES file relative to the fixture in degrees. Use this value to rotate the IES file if it does not point in the same direction as your light fixture block.

Exempt from Energy Calculations: Whether or not this type of light fixture is exempt from being counted in energy calculations. This will vary by state, but often emergency or exit lights are exempt. This setting can be overriden on an individual light fixture basis on the drawing if necessary. See the Exempt Light Fixtures section for more information.

Description: A description of what type of light fixture has been defined. The description will appear on the light fixture schedule on the drawing.

Short Description (For Excel Link): A short description of the light fixture that can be displayed in Excel using the Excel Add-In.

Model 1, Model 2, Model 3: A description of the model for the light fixture. In the light fixture schedule, the three models can be shown in a single column or in three separate columns. See the Edit Light Fixture Schedule List section for more information.

Note 1, Note 2, Note 3: These three notes will appear on the light fixture schedule on the drawing. See the Schedule Notes section for more information on setting the default values for these notes.


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