Within how many feet of a conduit termination must rigid metal conduit be fastened?

Within how many feet of a conduit termination must rigid metal conduit be fastened?

• A. 3
• B. 7
• C. 10
• D. 5

Answer: (A)

Rigid metal conduit must be secured close to where it ends at a box, cabinet, or other termination so that movement or pulling can’t stress the fitting or box. The rule specifies fastening within 3 feet of the termination, with additional supports spaced at up to 10-foot intervals along the run. So, the required distance is three feet. Distances farther than that would not meet the code requirement and could allow movement that compromises the connection.

Rigid metal conduit must be secured close to where it ends at a box, cabinet, or other termination so that movement or pulling can’t stress the fitting or box. The rule specifies fastening within 3 feet of the termination, with additional supports spaced at up to 10-foot intervals along the run. So, the required distance is three feet. Distances farther than that would not meet the code requirement and could allow movement that compromises the connection.