Connecting The Ground Wire; Connecting And Configuring Power - 3Com 7754 Installation Manual

42 C 2: I
HAPTER NSTALLING
Connecting the
Ground Wire
Connecting and
Configuring Power
Connecting AC Power
T S 7750
HE WITCH
To connect the ground wire:
1 Wear an antistatic wrist strap.
2 Remove the screw from the grounding hole in the switch chassis.
3 Set the ground wire connector around the grounding screw.
4 Fasten the grounding screw in the hole on the chassis.
5 Connect the other end of the ground wire to the grounding bar of the switch.
If you install the switch in a cabinet, 3Com recommends that the ground wire of
the switch be connected to the grounding bar of the cabinet.
WARNING: The resistance between switch chassis and the ground should be less
than 1 ohm.
The Switch 7750 requires power connection from the AC or DC power source and
from the PoE power rack.
To connect AC power cords:
Cords
1 Power off all the related parts of the switch before connecting the AC power cord
2 Plug the power cords into the sockets in the switch and attach the retention clips
to the power cord plugs.
3 Plug the other end of the cords into a socket strip with surge protector. Connect
the strip to the power source in the room.
Figure 32 illustrates the AC power cord connection.
Figure 32 AC Power Cord Connection
1 AC power sockets
2 Retention clips
3 Grounding screw
WARNING: For surge protection, the power should be channelled through an
external protection device into the Switch 7750.