Installation Manual

UL Power-limited Wiring Requirements

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.