Allied Telesis AT-MCR12 - Manual (Page 40)

Chapter 2: Installation
40
Wiring and Powering on a DC-Powered Chassis
To wire and power on a DC-powered chassis, perform the following
procedure:
1. Identify the negative, frame ground, and positive terminals on the
terminal block, as shown in Figure 16.
Figure 16. Locating the Terminals on the DC Terminal Block
2. Before you strip and attach the wires, review the following safety
precautions:
Warning: As a safety precaution, install a circuit breaker with a
minimum value of 15 Amps between the equipment and the DC
power source.
Always connect the wires to the LAN equipment first before you
connect the wires to the circuit breaker. Do not work with HOT
feeds to avoid the danger of physical injury from electrical shock.
Always be sure that the circuit breaker is in the OFF position
before connecting the wires to the breaker.
E9
Warning: Only trained and qualified personnel are allowed to
install or replace this equipment.
E14
Positive Negative
Ground
This system works with positive grounded or negative grounded
DC systems.
E13
Warning: For centralized DC power connection, install only in a
restricted access area.
E23