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5 power-limited wiring requirements, Power-limited wiring requirements – System Sensor PDRP-2001 User Manual

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PDRP-2001 Series Manual — P/N 53043:E1 2/28/2011

Installation

Power-limited Wiring Requirements

2.5 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 is
illustrated below.

Figure 2.10 Typical UL Power-limited Wiring Requirements

Power-limited Circuits

(Class 2)

Power-limited
Circuits
(Class 2)

Nonpower-
limited
Circuit

AC Power

120 VAC

Hot (L1)

Ground

Neutral (L2)

CAC-5X

RP

20

01

cUL

wire

.wmf

4XTMF

CAC-5X

ground

stud

Power-limited Circuits (Class 2)

Power-limited

Circuit

(Class 2)

Deluge - Preaction Control FACP

Nonpower-limited Circuits*

*Note: In certain applications, an NAC (power-limited circuit) could be adjacent to a
releasing circuit (nonpower-limited without supervision kit REL-4.7K)