FBI XL-1T, Installation And Setup Manual

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XL-1T Installation and Setup Guide
3–8
Wiring Information for Keypads and Other Devices
Keypads and Other Devices
If single or multiple devices are daisy-chained to the control terminals, determine the current
drawn by the unit(s) connected to the single wire run. Refer to the Wiring Run Table below
to determine the maximum wire length that can be safely used for each wire size.
In some cases, the total current drawn may result in a value not shown in the table. For
example, if the plan is to use #22 gauge wire and the total current drawn is 400mA (a value
between 300mA and 500mA), the maximum wire length to be used is approximately 65 ft. (a
length between 50 and 80 ft.). Other maximum wire lengths for values of current not shown
in the table can be calculated in a similar manner.
Maximum wire lengths for a device that is homerun to the control can be
determined by using the Wire Run Table, based on the current draw of that device
alone.
Wiring Run Table for Devices Drawing Power from Terminals 12 (+) and 13 (-)
TOTAL CURRENT DRAWN BY ALL UNITS ON A SINGLE WIRE RUN
WIRE SIZE
50mA or less 100mA 300mA 500mA
#22 500 ft. (152 m.) 250 ft. (76 m.) 80 ft. (24 m.) 50 ft. (15 m.)
#20 750 ft. (228.6 m.) 380 ft. (116 m.) 130 ft. (39.6 m.) 80 ft. (24 m.)
#18 1300 ft. (396 m.) 650 ft. (198 m.) 220 ft. (67 m.) 130 ft. (39.6 m.)
#16 2000 ft. (609.6 m.) 1000 ft. (305 m.) 330 ft. (100.5 m.) 200 ft. (70 m.)
Examples:
1. What is the maximum distance for one XK-104 keypad drawing 30mA using #20 gauge
wire?
Using the table above, the keypad can be placed no greater than 750 ft. away
from the panel.
2. What is the maximum distance for three 6805 keypads drawing 180mA (60mA each)
using #20 gauge wire connected in a single wire run?
Using the table above, the farthest keypad can be placed no greater than 292
ft. away from the panel.
3. What is the maximum distance for 5 smoke detectors drawing 0.25mA (5µA each) using
#22 gauge wire connected in a single wire run?
Using the table above, the farthest smoke detector can be placed no greater
than 500 ft. away from the panel.