When is CI Cable Used For Hospital Notification Circuits?

NFPA 72 Chapter 23.10.2 states: “Fire alarm systems used for partial evacuation and relocation shall be designed and installed so that attack by fire within a notification zone shall not impair control and operation of the notification appliances outside that notification zone.” Most, if not all hospitals use partial evacuation or relocation when a fire [Read More]

When are 2 Hour Rated Circuit Protection for Fire Alarm Systems Required?

An electrical circuit’s survivability in harsh conditions is defined by the method of its installation. Some circuits that are relied upon to supply power to critical functions related to life safety need extra protection from fire, water and physical damage. Those of us in the fire alarm industry know circuit integrity (CI) cable enhances survivability [Read More]