
SFP-5UD & SFP-10UD Series Manual—
P/N 52879:C2 1/24/2012
35
Power-limited Wiring Requirements
Installation
2.5 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. Furthermore, all power-limited and nonpower-limited circuit wiring must enter
and exit the cabinet through different knockouts and/or conduits. A typical wiring diagram is illus-
trated below.
J13
Figure 2.11 Typical UL Power-limited Wiring Requirements
Power-limited Circuits
(Class 2)
Power-limited
Circuits
(Class 2)
Nonpower-
limited
Circuit
AC Power
N-CAC-5X
10u
dU
Lw
ire2
.w
m
f
4XTM
N-CAC-5X
earth
ground
Nonpower-
limited
Circuit
Power-limited
Circuit
(Class 2)
SFP-10UD FACP
Power-limited Circuits (Class 2)