The metal raceway enclosing tap conductors for recessed fixtures shall not be less than _____' nor more than _____' long.

The correct answer indicates that the metal raceway enclosing tap conductors for recessed fixtures must have a minimum length of 1-1/2 inches and a maximum length of 6 feet. This specification is crucial for ensuring the safety and efficiency of electrical installations, particularly in recessed fixtures where these tap conductors are used.

The rationale behind the minimum length of 1-1/2 inches is to ensure that there is enough space for the proper installation and termination of the conductors, allowing for sufficient wiring practices that meet safety codes. The maximum length of 6 feet helps prevent potential overheating and ensures that the conductors are not subjected to excessive bending or stress, which could lead to electrical failures or hazards.

Understanding these specific lengths is important for compliance with electrical codes and ensuring that installations are performed safely and correctly. It provides guidance for electricians and professionals in the field to avoid issues related to either inadequate or excessive raceway length.