Which type of cable must be marked by means of a printed tag attached to the coil, reel, or carton?

The correct answer is Type MI cable. Type MI, or Mineral Insulated cable, is constructed using a metal sheath that provides excellent heat resistance and durability. Because of its specialized components and applications, it requires specific labeling standards for safety and compliance reasons.

The requirement for marking Type MI with a printed tag is crucial to ensure that users are aware of its unique characteristics, applications, and safety considerations. The printed tag provides information such as the type of cable, its ratings, and any pertinent installation instructions, which helps in maintaining safety on job sites and adherence to electrical codes.

Other cable types, while they may have their own labeling requirements, do not necessitate the same level of printed tagging as Type MI. This distinction underscores the importance of knowing the specific regulations and standards that apply to different types of electrical cabling in order to ensure safety and proper installation practices.