For horizontal runs of metal wireways, how often must they be supported?

In fire alarm systems, proper installation and support of wiring are critical for both safety and functionality. For horizontal runs of metal wireways, the requirement is to ensure they are adequately supported. The standard stipulates that horizontal runs must be supported at intervals not exceeding 5 feet. This specification is designed to maintain the integrity of the wiring, prevent sagging, and reduce the risk of damage to conductors and components within the wireway.

Supporting wireways at these intervals helps to mitigate the risks associated with mechanical stress, which could cause wear over time or during environmental changes. Adhering to this support requirement ensures a reliable and safe installation, allowing the fire alarm system to perform effectively when needed.