Electrical · E-B6H7Z

Typical Fire Alarm Riser Diagram

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This diagram details the schematic layout of a fire alarm system connected to a fire alarm control panel equipped with a digital alarm communicator transmitter and annunciator. It specifies conduit and conductor sizes, including three-quarter-inch conduit with twisted shielded copper cables for signaling line circuits and copper THHN conductors for power feeds. Notification appliance circuits terminate with end-of-line resistors, and specific conduit runs tie into telephone terminal boards and suppression systems such as Ansul. Accompanying engineering notes govern installation requirements, circuit classes, dedicated locking circuit breakers, and detector placements per NFPA-72.

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