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Shop drawings document the fire alarm design and installation details for review, permitting, and commissioning. Typical contents: floor plans with device locations, circuiting (IDC/SLC/NAC), riser diagrams, sequence of operations/matrix, power calculations (battery, voltage drop), equipment cut sheets, and notes on codes/standards. Clear documentation supports AHJ approval, accurate installation, testing, and future troubleshooting.
Worked example(s) Example: A proper sequence matrix shows what happens when 'Smoke Detector in Corridor' alarms: which NACs activate, which doors release, which HVAC shuts down, what is sent to supervising station, and what annunciators display.
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