Rigid metal conduit shall be supported on straight runs at intervals not to exceed how many feet?

Rigid metal conduit shall be supported on straight runs at intervals not to exceed how many feet?

• A. 5
• B. 10
• C. 8
• D. 6

Answer: (B)

Rigid metal conduit needs steady support along straight runs to stay in place and resist damage. The maximum distance between supports is ten feet, which helps prevent sagging, misalignment at terminations, and physical damage over the length of the run. In addition, the conduit must be secured within three feet of every box, cabinet, or fitting to keep the entire run stabilized at its terminations. So, for straight runs, place supports no farther apart than ten feet, with a support within three feet of each box or fitting.

Rigid metal conduit needs steady support along straight runs to stay in place and resist damage. The maximum distance between supports is ten feet, which helps prevent sagging, misalignment at terminations, and physical damage over the length of the run. In addition, the conduit must be secured within three feet of every box, cabinet, or fitting to keep the entire run stabilized at its terminations. So, for straight runs, place supports no farther apart than ten feet, with a support within three feet of each box or fitting.