Installation
32 MS-5UD/MS-10UD Series   PN 52626:B  8/01/2008
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 2.11 Typical UL Power-limited Wiring Requirements
Power-limited Circuits
(Class 2)
Power-limited 
Circuits
(Class 2)
Nonpower-
limited 
Circuit
AC Power
Hot (L1)
Ground
Neutral (L2)
CAC-5X
10udULwire.cdr
4XTMF
CAC-5X
earth
ground
Nonpower-
limited 
Circuit
Power-limited 
Circuit
(Class 2)
MS-10UD FACP
Power-limited Circuits (Class 2)