Fire-Lite ECC-FFT Firefighters Telephone - Manual (Page 14)

14 ECC-FFT Instruction Manual — P/N LS10031-000FL-E:B 9/4/2013
Installation UL Power-limited Wiring Requirements
2.4 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-lim-
ited circuit wiring and nonpower-limited circuit wiring must enter and exit the cabinet through dif-
ferent knockouts and/or conduits. A typical wiring diagram for the ECC-FFT is shown below.
Figure 2.4 UL Power-Limited Wiring Requirements
back view of dress panel
Note: The dress panel is shown swung
open for illustration purposes only.
Nonpower-
limited
circuit
Power-limited
circuits
fft
ul
pw
r.
w
m
f