UL Power-limited Wiring Requirements
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411UDAC Document #51073 Rev. D 12/09/2008 P/N 51073:D
2.8 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 411UDAC is shown below.
FIGURE 2-12:Typical UL Power-limited Wiring Diagram
AC Power
Nonpower-limited Circuits
Power-limited Circuits
411AULPW.CDR
Note: Relay connections may be power-limited or nonpower-
limited, provided that 0.25" spacing is maintained between
conductors of power-limited and nonpower-limited circuits.
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