Especially for Technicians Wanting to Know Why
With fire alarm systems, knowing how the electronics work just doesn’t seem good enough; the dos and don’ts about how the system is supposed to be wired almost seem to contradict electronic common sense.
The book “Make It Work – Conventional Fire Alarms” explains the contradiction. It starts out with life safety. Then the book goes further, explaining the reasons behind the design for the two major wiring circuits: the IDC (Initiating Device Circuit) and the NAC (Notification Appliance Circuit).
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