Specifying Enclosure Size
You can specify the enclosure size shown on the one-line and in reports and work permits.
- Default from Library: When selected, the program uses the enclosure size from the device library. The library provides typical values based on the equipment type and voltage.
- User Specified: Selecting this option enables you to enter the enclosure size for the item. This enables you to get more accurate calculation results, assuming the correct dimensions are entered.
The units displayed are based on the units selected in Arc Flash Hazard Options on the System tab. For inches, the range is .01-1000. For millimeters, the range is 0.1 to 25,000.
The enclosure dimensions affect arc flash.
- Arc flash is greatest for a 20 in. x 20 in. x 20 in. enclosure.
- Arc flash decreases as the height or width dimensions increase.
- In low voltage equipment with a height and width of less than 20 inches, arc flash decreases if the depth dimension is less than or equal to 8 inches.
