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Tray Configuration Options and Dimensions
The cable ampacity assessment program calculates the derated ampacity based on the ambient and conductor temperatures. In addition, the user can either select the base temperature provided by the manufacturer or the operating temperature of the cable.
ETAP's cable ampacity assessment software tool offers a selection of fire protection layers available in the ETAP extensive Library. The cable ampacity calculation module of ETAP provides the following cable fire protection options:
The cable ampacity calculation method based on ICEA P-54-440 applies to cables in aboveground trays using calculated derating factors based on tray size, cable fill, and environment conditions. The actual values of tray depth, width, and % fill entries will be taken into account, which gives more accurate results.
In addition, if both the ambient temperature and conductor temperature differ from those shown in the ICEA standard, the resulting cable ampacity values may be smaller because the standard used the product of both correction factors as the temperature correction.
In ETAP cable ampacity calculations, the ambient temperature and conductor temperature values are used directly in the calculation and, therefore, yield more accurate results.
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