14 Notification Appliances—PS12/24ADA Series Signaling Strobe and Sounder
Note: Do not loop the Notification Appliance Circuit (NAC) wires under
the terminal screw. Wires must be broken at the device terminal
connection in order to maintain electrical supervision.
T his
N ot Th is
w irg ui de
Figure 6: Electrical Connections
N AC
From
C ontrol
P anel or
P revious
Device
T o
E nd-of-L in e
or
N ext D evice
p s w ire
Figure 7: Wiring the PS12/24ADA
Note: The wiring is shown with the control panel in alarm. Polarity is
reversed in supervisory condition.
The minimum recommended wire size for the NAC is 18 AWG, but larger
wire size may be required to assure minimum operating voltage at each
device when considering the total load current, wire resistance, and
resulting voltage line loss.
Wiring
Installation
Guidelines
Wiring Diagram
