1 2 5 3 0 / 1 2 5 4 0 O W N E R ' S M A N U A L
P/N 447203 Issue I
VIII-2
Notification Appliance Circuit Wire Selection Guide
Each Notification Appliance Circuit must not have a voltage drop greater than 1 volt. The following chart
is based on the following premises:
•
The entire load is at the end of the wire run (worst case).
•
Resistance is of solid copper wire
Contact your local distributor or the factory if further information is needed in your circumstances.
Maximum Wire Loop Distance (Feet)
Signal Load (A)
18 AWG
16 AWG
14 AWG
12 AWG
0.1
1,237
1968
3134
4975
0.25
495
787
1253
1990
0.5
247
393
626
995
0.75
165
262
417
663
1.0
123
196
313
497
1.25
99
157
250
398
1.5
82
131
208
331
Addressable Device Circuit Wire Selection Guide
Each addressable device circuit must meet the following requirements:
•
Total loop resistance - 40 ohm maximum.
•
Total loop capacitance - 0.28uF maximum (56pF/ft. max.)
•
Twisted pair wire.
•
Unshielded cable.
•
Low capacitance cable.
•
High velocity of propagation cable - 60% minimum.
•
Each loop runs separate from all other circuits.
•
Run + out and - out separately from + in and - in.
•
Different models or types of cable should not be in the same loop.
Maximum Wire Loop Distance (Feet)
(Includes all branches of a Style 4 loop)
Wire size:
18AWG
16AWG
14AWG
* 12AWG
Wire length:
6150
9750
10,000
10,000
Cable length:
3075
4875
5,000
5,000
* The terminal blocks of Faraday addressable devices are rated for a maximum of 14AWG wire.