de-rating factor - Intergraph Smart 3D - Help

Intergraph Smart 3D Electrical

PPMProduct
Intergraph Smart 3D
PPMCategory_custom
Help
SPFVersion_custom
2019 (10.0)
Version_S3D
12.1(2019)

A factor that reduces the current-carrying capacity (ampacity) of a cable due to its method of installation. This factor is affected by the size and type of tray or conduit, whether or not the cables are installed in air or laid in the ground, ambient temperature, proximity of cables with one another, and so forth. This de-rating factor does not apply to cable tray; it is a factor applied to each cable depending on the method of installation.