Type AC armored cables must be secured every how many feet?

Type AC armored cables, also known as armored cable (Type AC), have specific installation requirements outlined in the National Electrical Code (NEC). According to the NEC, these cables must be secured at intervals not exceeding 4.5 feet. This requirement is in place to ensure that the cables remain stable and are protected from physical damage during their service life.

By securing the cables at this interval, it helps to prevent strain on the connections and maintains the integrity of the installation. The 4.5-foot requirement strikes a balance between allowing enough flexibility for installation while providing sufficient support to mitigate the potential for movement or stress on the cable. Proper securing of cables is crucial for safety and compliance with electrical codes, and it minimizes the risk of damage to the cables over time.