Final answer:
Fire cables located within 7 feet of the floor must be fastened at intervals per local building codes, typically every 18 to 24 inches. This requirement ensures the cable's integrity and function in emergency situations. Always refer to current codes for precise regulations.
Step-by-step explanation:
The question pertains to the installation standards for fire cable systems within a building. According to typical building codes, such as those found in the National Electrical Code (NEC), there are specific requirements for the spacing of supports when installing cable.
If fire cable is located within 7 feet of the floor, the general requirement is that it shall be securely fastened at intervals of not less than every 18 inches to 24 inches, depending on the type of cable and the specifics of the installation codes or standard being followed. However, it's essential to consult the latest local building codes or the NEC as these requirements can vary based on jurisdiction and evolve over time.
This spacing is crucial for ensuring that the cable is adequately supported against potential damage and does not sag or become a tripping hazard, which increases the risk during a fire emergency. Secure fastening also maintains the integrity of the cable's pathway, which is essential in a fire alarm or suppression system, as these systems depend on reliable signaling to function correctly.
It is important for electricians and engineers to adhere to these regulations and to inspect the installation periodically to ensure ongoing compliance. In any case, always refer to the most current local codes and standards to determine the exact fastening intervals and installation practices required for life safety systems like fire cables.