derating factors must be applied when the number of current - carrying conductors in a wireway exceeds which…

derating factors must be applied when the number of current - carrying conductors in a wireway exceeds which of the\n3\n15\n20\n30

derating factors must be applied when the number of current - carrying conductors in a wireway exceeds which of the\n3\n15\n20\n30

Answer

Brief Explanations:

In electrical engineering, when the number of current - carrying conductors in a wireway exceeds 3, derating factors must be applied to account for increased heat generation and reduced ampacity due to the proximity effect and other factors.

Answer:

A. 3