Where structural members are provided, intermediate metal conduit must be secured within what maximum distance from an outlet box?

The maximum distance that intermediate metal conduit (IMC) must be secured from an outlet box is established based on the need for safety and mechanical integrity. Securing the conduit helps to prevent damage from physical forces and ensures reliable electrical connections.

In this case, the correct standard requires that IMC be secured within a maximum distance of 3 feet from an outlet box. This regulation is put in place to ensure that the conduit maintains its positioning and does not become displaced over time, which could lead to loose connections or potential hazards such as short circuits or electrical fires. This requirement strikes a balance between providing structure and flexibility for installation, ensuring that the conduit is adequately supported while avoiding excessive support requirements that could complicate installation.

Understanding this standard is critical for compliance with electrical codes and maintaining the safety and functionality of fire alarm systems and overall electrical installations.