
Installation
and
Operation
Manual
59
NAC
Wire
Selection
Guide
Table
16
NAC
Wiring
Table
Total
Signal
Load
Maximum
Wiring
Run
to
Last
Device
Maximum
Line
Resistance
AWG12
AWG14
AWG16
AWG18
Amperes
ft
m
ft
m
ft
m
ft
m
Ohms
0.3
4530
1381
2847
868
1782
543
1124
343
7.33
0.6
2265
691
1423
434
891
272
562
171
3.67
0.9
1510
460
949
289
594
181
375
114
2.44
1.2
1132
345
712
217
445
136
281
86
1.83
1.5
906
276
569
174
356
109
225
69
1.47
2
679
207
427
130
267
81
169
51
1.10
NAC
circuits
are
rated
for
of
2
Amperes
each.
Maximum
voltage
drop
can’t
exceed
1.8V
(for
regulated
circuit).
AnnunciatorWire
Selection
Guide
Table
17
Annunciator
Wiring
Table
(AWG)
Wire
Resistance
ft
m
(
ohms/km
)
12
5.31
15443
4708
13
6.69
12257
3737
14
8.45
9704
2959
15
10.6
7736
2358
16
13.5
6074
1852
17
16.3
5031
1534
18
21.4
3832
1168