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Chapter 9
Wiring the DC Connector on the AT-
PWR250-80 Power Supply
This chapter contains instructions on how to wire the DC connector on the
AT-PWR250-80 DC power supply.
Warning
As a safety precaution, install a circuit breaker with a minimum value
of 15 Amps between the equipment and the DC power source.

E9
Warning
Always connect the wires to the LAN equipment first before
connecting them to the circuit breaker. Do not work with HOT feeds
to avoid the danger of physical injury from electrical shock. Always
verify that the circuit breaker is in the OFF position before connecting
the wires to the circuit breaker.

E9
Warning
For centralized DC power connection, install only in a restricted
access area.

E23
Warning
This equipment must be installed in a Restricted Access location. 
E45
Note
A tray cable is required to connect the power source if the unit is
powered by centralized DC power. The tray cable must be a UL
listed Type TC tray cable and rated at 600 V and 90 degrees C, with
three conductors, minimum 14 AWG.

E24
To wire the DC connector on the AT-PWR250-80 DC Power Supply,
perform the following procedure:
1. Power off the DC circuit to which the switch will be connected.
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