Power-limited Wiring Requirements

Installation

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.

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

Nonpower-limited Circuits*

Power-limited Circuits

 

 

 

 

 

 

 

 

Power-limited Circuits (Class 2)

(Class 2)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AC Power

120VAC Hot (L1) Ground

Neutral (L2)

earth

ground

Power-limited

Circuits

(Class 2)

CAC-5X

CAC-5X

4XTMF

Nonpower- limited Circuit

Nonpower- limited Circuit

Power-limited

Circuit

(Class 2)

Deluge - Preaction Control FACP

RP2001ULwire.cdr

Figure 2.10 Typical UL Power-limited Wiring Requirements

MRP-2001 & MRP-2001E PN 53040:A 4/16/2007

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