Installation
46 MS-9050UD PN 52413:C 01/23/08
2.6 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 FACP is shown below.
Figure 2.7 Typical UL Power-limited Wiring Requirements
Power-limited Circuits (Class 2)
Power-limited Circuits (Class 2)
Nonpower-limited Circuits (Class 1)
Nonpower-limited,
(Class 1)
supervised
Telephone Circuit
AC Power
Hot
Neutral
Ground
9050udulpwr.cdr
To Batteries
(nonpower-limited,
Class 1
supervised)
maintain minimum 0.25”
between power-limited
and nonpower-limited
circuits wiring
Ground Stud
Transformer Wires
(nonpower-limited,
supervised)
4XTMF
To Next Page
Loading...
