FBII XL-1S, Hookup And Installation Instructions

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Section 2 - System Wiring and Hookup
2–7
Wiring Information for Keypads & Other Devices
Keypads & Other Devices
If single or multiple devices are connected to a single 4-wire or 2-wire run ("daisy chained")
to the control terminals, determine the current drawn by the unit(s) connected to the single
wire run, then 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 you plan to use #22 gauge wire and the total current drawn is 400 mA (a value
between 300 mA and 500 mA), the maximum wire length you should use 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 also be
determined from the table, based on the current draw of that device alone.
Wiring Run Table For Devices Drawing Power From Terminals 12 (+) & 13 (-)
TOTAL CURRENT DRAWN BY ALL UNITS ON A SINGLE WIRE RUN
WIRE SIZE
50 mA or less 100 mA 300 mA 500 mA
#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 30 mA 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 180 mA (60 mA 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 0.25 mA (5 µA 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.