67
Table 12
Analog Loop Wiring
Power Wiring:
Use Table 11, Wiring Table for NACs, on page 66 for the wiring information for
the remote annunciator being used.
RS-485 Wiring:
See the wiring information for the remote annunciator being used.
4-Wire Smoke Wiring:
The maximum allowable current is 0.2 amperes. The maximum
allowed voltage drop is 1 volt. Refer to Table 10, Wiring Table for Initiating Circuits., on
page 66.
Shield for Analog Loop Wiring:
Only twisted pair is recommended, but if shielded twisted
pair is used, wire shield at the start and the end of the loop to the terminals marked Shield at
the loop adder board.
Wire Gauge (use
twisted pair)
Loop Total (Out and In) Maximum
Twisted Pair Wire Run
(AWG)
ft.
m
12
10,000
3049
14
7971
2429
16
4980
1518
18
3132
955
Note:
• Line capacitance shall not exceed 0.5
μ
F.
• Inductance shall not exceed 1 mH.
• Resistance shall not exceed 40 ohms.
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