3Com 4500G Getting Started Manual page 32

32 C 2: I
HAPTER NSTALLING THE
S
WITCH
Figure 17 Ground the switch by burying the grounding body into the earth
( 1 ) ( 1 ) ( 1 ) ( 1 )
(1) Power input on the switch
(4) Ground
3 For an AC-powered switch, if neither of the above-mentioned two
conditions is available, ground the switch through PE wire of the AC power
supply. In this case, make sure this PE wire is well connected to the ground
at the power distribution room or AC transformer side.
Figure 18 Ground through an AC PE wire
(3)
(1) AC power input
(4) PE ground wire
( 2 ) ( 2 )
( 3 ) ( 3 )
(2) Grounding screw on the
switch
(5) Angle steel
(5)
(4)
(2) Grounding screw
(5) Three-wire AC power input cable
( 4 ) ( 4 )
( 5 ) ( 5 )
(3) Protection ground wire
(1)
(2) (2)
(6)
(3) Power transformer
(6) Ethernet Switch