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UL Power-limited Wiring Requirements
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 non-power-limited circuit wiring must enter and exit the cabinet
through different knockouts and/or conduits. When connecting the ground cables, be sure that the AC mains ground is the first one installed,
closest to the backbox. A typical wiring diagram for the ES-1000X is shown below.
Power-limited
Circuits (Class 2)
AC
Power
Grounding
stud (see
Figure 2.4)
ES-1000X Series Manual — P/N LS10133-000FL-E:A 6/21/2023
Remote
Power
Supply
Sync Input
Optional Class A Return
4.7 KΩ ELR
Non-power-limited
Circuits
4XTMF
batteries
Ground
wire nut
cables (2)
#71073
Figure 2.10 Typical UL Power-limited Wiring Requirements
Figure 2.9 Remote Sync Output
Remote Sync Output
Power-limited Circuits (Class 2)
SLC-3LS
to
FACP main
circuit board
maintain minimum 0.25" between
power-limited and non-power-limited
circuits wiring
IPOTS-COM
Installation
Non power-limited
(Class 1)
Supervised
Telephone Circuit
27
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