Kidde VS Series User Manual

Appendix B: Worksheets
200 P/N 3102351-EN • REV 005 • ISS 28DEC18
Notification appliance voltage drop calculation
worksheet
Use the notification appliance voltage drop calculation worksheet to calculate the voltage drop
of your NAC circuits over the distance of your wire.
NAC 1 voltage drop calculations
Circuit length Total circuit
current [2]
Wire resistance per
1000 ft [1]
Voltage
drop
feet x amps x Ω ÷ 1000 =
Panel
voltage
Voltage drop End of line
voltage [3]
Voltage drop Panel
voltage
Voltage
drop %
19.8 V – = ÷ 19.8 V =
NAC 2 voltage drop calculations
Circuit length Total circuit
current [2]
Wire resistance per
1000 ft [1]
Voltage
drop
feet x amps x Ω ÷ 1000 =
Panel
voltage
Voltage drop End of line
voltage [3]
Voltage drop Panel
voltage
Voltage
drop %
19.8 V – = ÷ 19.8 V =
NAC 3 voltage drop calculations
Circuit length Total circuit
current [2]
Wire resistance per
1000 ft [1]
Voltage
drop
feet x amps x Ω ÷ 1000 =
Panel
voltage
Voltage drop End of line
voltage [3]
Voltage drop Panel
voltage
Voltage
drop %
19.8 V – = ÷ 19.8 V =
NAC 4 voltage drop calculations
Circuit length Total circuit
current [2]
Wire resistance per
1000 ft [1]
Voltage
drop
feet x amps x Ω ÷ 1000 =
Panel
voltage
Voltage drop End of line
voltage [3]
Voltage drop Panel
voltage
Voltage
drop %
19.8 V – = ÷ 19.8 V =

Kidde VS Series Specifications

General

Power Source	120V AC
Battery Backup	9V battery
Sensor Type	Photoelectric
Alarm Sound Level	85 dB at 10 feet
Hush Feature	Yes
Test Button	Yes
LED Indicator	Yes
Mounting Type	Wall or ceiling
Compliance	UL 217