Prepare for Installation
11
Cable Specification
Cable Routing and Conduit Access
Echo Relay Panel Feedthrough has removable plates located on top, bottom and both sides to
accommodate conduit fittings for line, load and feed wiring. Two knockouts, one on each
side of the user interface, are specifically provided for low voltage (control) wiring.
Purpose
Cable Type / Description
Note
Power Control
Processor Electronics
120V, 230V, or 277V AC
50/60Hz
A dedicated circuit is recommended. 8A for the
ERP24-FT and 15A for the ERP48-FT.
For installations utilizing UL 924 for emergency
lighting loads, secure a dedicated emergency
circuit.
Line / Load
4mm
2
(10 AWG) maximum
copper
maximum 20A @ 300V AC per relay
DMX
Belden 9729 (recommended)
or equivalent - for use with an external DMX
control source (not included). DMX is RS485
serial and follows a daisy-chained topology.
Echo Control Stations
and Sensors
Belden 8471 plus 1 - 2.5mm
2
(14 AWG) ESD drain wire
recommended (drain wire not
required if installed in grounded
metal conduit)
For use with wall stations and Echo enabled panel
to panel communications. Echo is FTT-10A
topology-free and polarity independent.
Emergency UL 924
2 - 1.5mm
2
(16 AWG), twisted
Contact input for UL 924 emergency lighting
loads
CONTROL
POWER
277V
OR
120V
NEUTRAL
I/O compartment
Low voltage (Class 2)
termination point
located behind the
user interface.
Power Control Processor
120, 50/60Hz
2 wire and ground
Conduit
Knockouts
in the lower side
panels
accommodate
12.7mm (1/2”)
conduit or
bushes for low
voltage control
Removable plates on top, bottom, or sides
Remove plate to punch conduit access as needed for line, load, and control electronic power wiring.
It is acceptable to remove the plate permanently if the unit is mounted directly next to an adjacent
Feed Through Echo Relay Panel.
