NMS cable (Romex) is not permitted in which type of studio?

NMS cable, commonly known as Romex, is not permitted in motion picture studios primarily due to safety regulations associated with fire hazards and the need for specialized electrical systems. In these environments, high-capacity lighting and sophisticated electrical equipment are often used, which can generate significant heat. Romex, being a non-metallic sheathed cable, lacks the necessary fire resistance and durability needed in such high-demand settings, leading to potential risks of electrical fires.

In contrast, sound, art, and photography studios may not have the same stringent electrical requirements or fire safety codes, allowing for more flexibility in the types of wiring used. Thus, the prohibition of Romex in motion picture studios is specifically linked to the unique challenges and risks associated with the filmmaking process, prioritizing safety and functionality.