3com 8807 User Manual

Page of 104
60
C
HAPTER
 4: S
WITCH
 I
NSTALLATION
Figure 38   Ground the switch when ground bar is available
If there is no ground bar but earth nearby and the grounding body is allowed 
to be buried, you can simply hammer an angle iron or steel pipe no shorter 
than 0.5 m into the earth. In this case, the yellow-green PGND wire should be 
welded with the angle iron (steel pipe) and the joint should be processed 
against eroding. (For the Switch 8800 Family, the grounding screw is on the 
rear panel. Connect it as illustrated in Figure 38). 
Figure 39   Ground the switch when allowed to bury grounding body nearby
If both ground bar and the conditions for burying the grounding body are not 
available, an AC-powered Ethernet switch can be grounded using the PE wire 
of the AC power supply. In this case, make sure that the PE wire of the AC 
(1) Air filter 
(2) Grounding screw 
(3) PGND wire 
(4) Ground bar of the equipment room 
(5) Rear panel of the switch 
(1) Air filter 
(2) Grounding screw 
(3) PGND wire 
(4) Ground bar of the equipment room 
(5) Angle steel 
(6) Rear panel of the switch
˄5˅
˄1˅
˄2˅
˄3˅
˄4˅
˄5˅
˄1˅
˄2˅
˄3˅
˄4˅
˄5˅
˄1˅
˄2˅
˄3˅
˄4˅
˄5˅
˄1˅
˄2˅
˄3˅
˄4˅
˄5˅
˄1˅
˄2˅
˄3˅
˄4˅
˄5˅
˄1˅
˄2˅
˄3˅
˄4˅
˄6˅
˄1˅
˄2˅
˄3˅
˄5˅
˄4˅
˄6˅
˄1˅
˄2˅
˄3˅
˄5˅
˄4˅
˄6˅
˄1˅
˄2˅
˄3˅
˄5˅
˄4˅