
Model SK-5208 Fire Control/Communicator Installation and Operation Manual
3-6
P/N 151204
3.6
Current Draw Calculations
3.6.1
Worksheet Requirements
The following steps must be taken when determining SK-5208 current draw and standby
battery requirements.
Filling in the Current Draw Worksheet, Table 3-2 (Section 3.6.2)
1. For the SK-5208, the worst case current draw is listed for the panel and panel accessories.
Fill in the number of devices that will be used in the system and compute the current draw
requirements for alarm and standby. Record this information in Table 3-2 at Line A.
2. Add up the current draw for all smoke detectors and record in the table at Line B.
3. Add up all notification appliance loads and record in the table at Line C.
4. For notification appliances and auxiliary devices not mentioned in the manual, refer to the
device manual for the current ratings.
5. Make sure that the total alarm current you calculated, including current for the panel itself,
does not exceed 6.0 A. This is the maximum alarm current for the SK-5208 control panel.
If the current is above 6.0 A you will need to use a notification power expander(s) such as
the 5495 to distribute the power loads so that the SK-5208 or the power expanders do not
exceed their power rating. Refer to the current draw worksheets provided with the 5495
manuals so you do not exceed their power requirements.
6. Complete the remaining instructions in Table 3-2 for determining battery size
requirements.
3.6.2
Current Draw Worksheet
Use Table 3-2 to determine current requirements during alarm/battery standby operation.
(Copy the page if additional space is required.)
firealarmresources.com
Summary of Contents for SILENT KNIGHT SK-5208
Page 2: ...firealarmresources com ...
Page 8: ...Installation Manual iv firealarmresources com ...
Page 9: ...Contents v firealarmresources com ...
Page 10: ...Installation Manual vi firealarmresources com ...
Page 17: ...Agency Listings and Requirements P N 151204 2 3 firealarmresources com ...
Page 118: ...firealarmresources com ...
Page 120: ...Cut Along the Dotted Line firealarmresources com ...
Page 121: ...firealarmresources com ...