Final answer:
The conductor adjustment factor does not apply to conductors in raceways that are shorter than 24 inches according to NEC guidelines.
Step-by-step explanation:
The conductor adjustment factor shall not apply to conductors in raceways having a length not exceeding 24 inches. This is according to the National Electrical Code (NEC) guidelines, which specify that conductor derating for the number of conductors in a raceway is usually not necessary for short runs of conduit or tubing. The NEC sets the standard for safe electrical design, installation, and inspection to protect people and property from electrical hazards.