NFW-50X Manual —
P/N LS10129-001NF-E:C 7/25/2018
27
UL Power-limited Wiring Requirements
Installation
2.6 UL Power-limited Wiring Requirements
Power-limited and nonpower-limited circuit wiring must remain separated in the cabinet. All power-limited circuit wiring must remain at
least 0.25” (6.35 mm) away from any nonpower-limited circuit wiring and nonpower-limited circuit wiring must enter and exit the cabi-
net through different knockouts and/or conduits. When connecting the ground cables, be sure that the AC mains ground is the first one
installed, closest to the backbox. A typical wiring diagram for the NFW-50X is shown below.
RTN-
OUT-
COMMUNICATOR
DISPLAY
24V
RTN+
OUT+
BATTERY
N/L2
EARTH
H/L1
USB-A
C
NO
NC
C
NO
NC
C
NC
NO
SUPV
TRBL
ALRM
ANN-LC
SLC
RMT SYNC
ANN-BUS PRI
ANN-BUS SEC
NAC2
NAC1
Figure 2.10 Typical UL Power-limited Wiring Requirements
Power-limited Circuits (Class 2)
Power-
limited
Circuits
(Class 2)
AC
Power
Grounding
Stud (see
Figure 2.4)
n
fw
5
0
x
u
lw
ir
e
.w
m
f
To
Batteries
maintain minimum 0.25” between
power-limited and nonpower-limited
circuits wiring
Ground
Cables (2)
#71073
Wire Nut
Nonpower-limited Circuits
Power-
limited
Circuits
(Class 2)
4XTM
Power-limited
(Class 2)
Supervised
Ethernet Circuit
Nonpower-
limited (Class 1)
Supervised
Telephone
Circuit
IPOTS-COM