Technical data

Chapter 4: Installation
4.5.4 Visual Notification Appliance Output Wiring
Wire gauge selection involves consideration of all factors including, wire loop length, maximum current draw of
each appliance, number of appliances, and maximum voltage drop allowable.
• Strobe NAC has a regulated 24VDC, 2.0 Amps maximum output.
• Strobe NAC meets Class B supervision requirements for notification appliance circuits.
• For the strobe output circuit, install a UL Listed 10K Ohm, ½ W EOLR across the last visual notification
appliance. If the output is unused, place a UL Listed 10K Ohm, ½ W EOLR across the output terminals.
4.5.5 Speaker Notification Appliance Output Wiring
Wire gauge may vary for each audio appliance output on the panel. When:
• Speaker (with transformer) appliances are used with supervised audio amplifier module. Wire gauge
selection involves consideration of all factors including, wire length, appliance power ratings, and the
number of appliances.
• The amplified output is either a selectable 25 or 70.7Vrms audio output, rated for 40 watts maximum.
• The output meets Class B supervision requirements for notification appliance circuits.
• To meet Class A requirements, a Cooper Wheelock splitter (SP4-A/B or SP4-APS) is required.
• For the audio output circuit, install a UL Listed 10K Ohm, ½ W EOLR installed across the last
notification appliance. If the output is unused, place a UL Listed 10K Ohm, ½ W EOLR across the
output terminals.
4.5.6 Wiring Diagrams for Audio/Visual Notification Appliances
+
-
STROBE
UL LISTED 10K OHM, 1/2 W
END OF LINE RESISTOR
Figure 4-8 Wiring Diagram for Visual Only Notification Appliances
CAUTION: Do not loop wire under terminals. Break wire run to provide supervision of the
connection.
SP40S Multi-Function Facility Communication System Manual, Revision D
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