GE Security Vigilant VS2 User Manual

Appendix B: Worksheets
Vigilant VS1 and VS2 Technical Reference Manual 201
Worksheet method
Use this worksheet to determine the maximum cable length of a notification
appliance circuit for a given number of appliances.
Use this worksheet only if all the appliances are regulated. That is, they must have a
minimum operating voltage of 16 V. For other appliances, use the “Equation method.”
NAC cable length
NAC1 NAC2 NAC3 NAC4
Total operating current [1] A
Load factor (VS1 panel) ×
0.20 0.20 0.20 0.20
V/A
Load factor (VS2 panel)
0.24
0.24 0.24 0.24
Load voltage drop = V
Source voltage
20.4
20.4 20.4 20.4
V
Load voltage drop −
V
Minimum voltage =
V
Regulated appliance voltage −
16.0 16.0 16.0 16.0
V
Voltage drop [2] =
V
Total operating current  A
Maximum resistance =
Ω
Wire resistance (Ω/ft) [3] 
Maximum wire length =
ft.

2 2 2 2
Maximum cable length =
ft.
[1] Total of the maximum operating currents for all appliances as specified for FWR power. See
the appliance installation sheets for operating currents.
[2] This voltage drop is valid for regulated notification appliances only. For unregulated
appliances, see “Equation method” on page 202.
[3] Use the manufacturer’s published wire resistance expressed in ohms per foot. For typical
values, see Table 43 on page 202.

GE Security Vigilant VS2 Specifications

General

Brand	GE Security
Model	Vigilant VS2
Category	Control Panel
Language	English