UL Power-limited Wiring Requirements
26
Document #50580 Rev.C 8/12/97 P/N 50580:C
3.7
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" 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 FIRE•COMMAND•25/50 is shown below.
Wiring to TB3 must be from power-limited source and enter/exit the cabinet through the lower left corner. (Wiring
must not be connected to TB3 when the FC-PSM(E) module is being used to power the VECP as shown).
FIGURE 3-13:
Typical Wiring Diagram for UL Power-limited Requirements
Nonpower-limited
Circuit
Power-limited Circuit
Nonpower-limited
Circuit
AC Power
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