Electrical · E-DB5WP

Typical Fire Alarm Riser Diagram

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Schematic layout and wiring connections for a commercial fire alarm system centered around a fire alarm control panel with a digital alarm communicator transmitter. The system connects to various notification appliances and initiating devices utilizing specified conduit and conductor sizes, including three-quarter inch conduit with copper THHN conductors and shielded fire alarm cables. Dedicated 120-volt alternating current power feeds the control panel, while telephone terminal board connections and auxiliary circuits are detailed with specific wiring requirements. General notes specify circuit classes, style configurations, dedicated locking circuit breaker labeling per NFPA 72, and contractor responsibilities for complete operational compliance.

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