A 120V section of lighting track, continuously loaded, should not exceed how many feet in length?

The correct answer, which indicates that a 120V section of lighting track, continuously loaded, should not exceed 12 feet in length, is based on the National Electrical Code guidelines pertaining to lighting track systems.

In the context of NEC Article 410, continuous loading refers to the maximum load that a circuit can carry without exceeding its rated capacity, particularly in terms of safety and performance. The specifications for the maximum length of a track are established to ensure that the wiring and connected devices do not overheat, which can pose a fire hazard.

A 12-foot length limitation allows for a safe distribution of electrical load across the track and ensures that the circuit can handle the power requirements of the fixtures mounted on it without risking overload. This standard is important for maintaining the efficacy of the lighting system and for ensuring that all components operate within their specified electrical limits.

Other options, such as shorter lengths, are not applicable for this specific alignment of continuous loads, and longer lengths could lead to unsafe conditions. Hence, a 12-foot maximum length fulfills the requirements for safe and effective use of 120V lighting rail systems.