If there are more than _____ conductors in a raceway, the ampacity of the conductors must be derated.

A) two
B) three
C) four
D) six

Derated

The process of operating a device below its rated maximum capability in order to prolong its life or ensure safety under certain conditions.

Raceway

An enclosed conduit that forms a physical pathway for electrical wiring, protecting wires and cables from damage and interference.

Ampacity

The maximum amount of electric current a conductor or device can carry before sustaining immediate or progressive deterioration.