Ul Power-Limited Wiring Requirements - Fire-Lite Alarms MS-5210UD Manual

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-limited 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 for the MS-5210UD is illustrated in Figure 2-9.
Typical Wiring Diagram for UL Power-limited Requirements
FIGURE 2-9:
Power-limited Circuit
Note that power-lim-
ited wiring is con-
nected to terminal
block below the
installed circuit board
AC Power
Nonpower-limited
Circuits
Document #50193
Power-limited Circuits
Rev. E 01/30/02 P/N 50193:E
Power-limited
Circuit
31