Connecting The Ground Wire - 3Com 4500G Getting Started Manual

30 C 2: I
HAPTER NSTALLING THE
Connecting the
Ground Wire
S
WITCH
Figure 15 Power socket (recommended)
Neutral point Neutral point
Live line Live line
Zero line Zero line
Connecting the AC Power Cord
1 Connect one end of the chassis ground wire to the grounding screw on the
rear of the chassis and the other end to the ground as near as possible.
2 Connect one end of the power cord to the power input on the rear panel of
the chassis, and plug the other end to the AC power input of the power
source.
3 Check whether the PWR LED on the front panel of the switch is ON. If the
LED is ON, it shows the power cord is properly connected.
CAUTION: Make sure that the ground wire has been properly connected
before powering on the switch.
CAUTION: Correctly connecting the switch ground wire is crucial to the
lightning protection and electromagnetic susceptibility (EMS) of your
switch.
The power input end of the switch is connected with a noise filter, whose
central ground is directly connected to the chassis, forming the chassis
ground (commonly known as PGND). This chassis ground must be securely
connected to the earth ground so that the faradic current and leaking
electricity can be safely released to the ground, enhancing the EMS
capability of the switch. Ground your switch as follows:
1 When a grounding strip is available at the installation site, attach one end
of the yellow/green ground wire of the switch to the grounding screw on
the grounding strip and fasten the captive nut.