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Search results with tag "Fire alarm faqs"
Fire Alarm FAQs - Edwards signals
www.edwards-signals.com5/2/2014 Fire Alarm FAQs Question Answer Q: How many zone/circuit fire alarm panel do I need? A: The size of a fire alarm panel is determined by …
Fire Alarm FAQs - Edwards signals
edwards-signals.comthe wires are returned back to another set of terminals at the fire alarm panel. With class B wiring, if there is a break in the circuit, every device after the break will stop working. With class A wiring, power/communications to the devices is fed from 2 directions, so if there is a single break in the wire, all the devices will continue to work.