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7 ul power-limited wiring requirements, Installation – Honeywell MS-9200UDLSE User Manual

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Installation

MS-9200UDLS PN 52750:E1 01/27/09

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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 and nonpower-limited circuit wiring must
enter and exit the cabinet through different knockouts and/or conduits. A typical wiring
diagram for the MS-9200UDLS is shown below.

Figure 2.11 Typical UL Power-limited Wiring Requirements

Power-limited Circuits (Class 2)

Power-limited Circuits (Class 2)

Nonpower-limited Circuits

Power-limited Circuits
(Class 2)

Nonpower-limited
Circuits

AC Power

Grounding Stud

9

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Nonpower-limited Circuits

To Batteries

maintain minimum 0.25”
between power-limited
and nonpower-limited
circuits wiring

Ground Strap

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