Fire-Lite MS-9200UDLSC Addressable Fire Alarm Control Panel - Manual (Page 36)

36 MS-9200UDLS Series Manual — P/N 52750:H 4/14/2014
Installation UL Power-limited Wiring Requirements
2.7 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-lim-
ited circuit wiring and nonpower-limited circuit wiring must enter and exit the cabinet through dif-
ferent 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 MS-
9200UDLS is shown below.
Figure 2.11 Typical UL Power-limited Wiring Requirements
Power-limited Circuits (Class 2) Power-limited Circuits (Class 2)
Nonpower-limited Circuits
Power-limited
Circuits (Class 2)
Nonpower-limited,
(Class 1) supervised
Telephone Circuit
AC
Power
Grounding
Stud (see
Figure 2.5)
9
2
u
d
c
u
lp
w
3
.w
m
f
Nonpower-limited Circuits
To
Batteries
maintain minimum
0.25” between
power-limited and
nonpower-limited
circuits wiring
Ground
Cable
#71073
Ferrite Clamps
(See Section 2.8.1
for for more
information.)
Wire Nut
dashed lines
represent wiring
behind PCB
Power-limited
Circuits (Class 2)
Nonpower-limited,
supervised
Fiber Circuit