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x510DP-52GTX Installation Guide
69
Power Wiring to a DC AT-PWR250R-80 Power Supply Module
This section describes how to power on a switch with a DC
AT-PWR250R-80 Power Supply Module, and essential safety information.
Warning
As a safety precaution, install a double-pole circuit breaker with a
maximum value of 20 Amps and 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.
E54
Warning
For centralized DC power connection, install only in a restricted
access area.
E23
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
Warning
This equipment is designed to permit the connection of the earthed
conductor of the DC supply circuit to the earthing conductor at the
equipment. If this connection is made, all of the following conditions
must be met:
This equipment shall be connected directly to the DC supply
system earthing electrode conductor or to a bonding jumper from
an earthing terminal bar or bus to which the DC supply system
earthing electrode conductor is connected.
This equipment shall be located in the same immediate area
(such as adjacent cabinets) as any other equipment that has a
connection between the earthed conductor of the same DC
supply circuit and the earthing conductor, and also the point of
earthing of the DC system. The DC system shall not be earthed
elsewhere.
The DC supply source shall be located within the same premises