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ECC-50DA Remote Amplifier
1.1.3 Wiring Specifications
To avoid induced noise (transfer of electrical energy from one wire to another), keep input wiring
isolated from high-current output and power wiring. Avoid pulling one multiconductor cable for
the entire panel. Power-limited, nonpower-limited, and audio circuit wiring must remain separated
in the cabinet. Maintain at least 0.25" (6.35 mm) spacing. Power-limited, nonpower-limited, and
audio circuit wiring must enter and exit the cabinet through different knockouts and/or conduits.
For the same reasons, wiring within the cabinet should be routed around the perimeter of the cabi-
net. It should not cross the printed circuit board where it could induce noise into the sensitive
microelectronics or pick up unwanted RF noise from the high speed circuits.
High frequency noise, such as that produced by the inductive reactance of a speaker or bell, can
also be reduced by running the wire through ferrite beads or by wrapping it around a ferrite toroid
core. Figure 1.3 provides an example.
To AC
AC Power
Nonpower-
limited Circuit
Figure 1.3 Wire Routing Example for ECC-50DA
8
Audio Riser/Data Bus
Power-limited Circuits
(Class 2)
–
+
–
+
–
+
A
B
OUT
IN
SBUS
ECC-50DA
CIRCUIT 4
CIRCUIT 3
CIRCUIT 2
CIRCUIT 1
BATTERY
+ –
+
IN
–
+
OUT
–
+
IN
–
+
OUT
–
+
IN
–
+
OUT
–
+
IN
–
+
OUT
–
wire clamp
ECC-50/125DA Instruction Manual — P/N LS10027-000FL-E:D 5/21/2015
firealarmresources.com
Speaker Circuits
Power-limited Circuits
(Class 2)
CIRCUIT 5
CIRCUIT 6
+ OUT –
+ IN –
+ OUT –
+ IN –
Refer to the ECC-CE4 Installation
Instructions, LS10002-000FL-E, for
more information on mounting and
ECC-CE4
wiring the CE4 Circuit Expander.
The CE4 provides 4 additional
speaker circuits.
Speaker Circuits
CIRCUIT 8
CIRCUIT 7
+ OUT –
+ IN –
+ OUT –
+ IN –
Power-limited
Circuits
(Class 2)
wire clamp
1 inch
audio circuit
Use a 1" spacer and wire
clamps to ensure 0.25"
spacing between power-
limited and nonpower-
limited wiring.
Installation
battery
wire
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