How should cables be fastened when located within 7 feet of the floor?

Cables located within 7 feet of the floor must be fastened in an approved manner at intervals of not more than 18 inches. This requirement is designed to ensure that the cables are secured adequately to prevent physical damage and to maintain a tidy installation. Fastening cables properly helps minimize the risk of tripping hazards and ensures that they are not inadvertently pulled or dislodged.

By adhering to the specified maximum interval for fastening, the installation remains compliant with safety standards while ensuring cables are easily managed and accessible for maintenance or inspections. This practice is also aligned with good wiring methods that contribute to the overall reliability of the fire alarm and signaling systems as outlined in the NFPA 72. Proper fastening supports both fire alarm functionality and adherence to local codes and standards, emphasizing the safety of both the installation and the occupants of the building.