Hangzhou Hechang Trading S3100-SI , Figure 3-8 Grounding the switch through a grounding strip ,

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Chapter 3 Installation
H3C S3100-SI Series Ethernet Switches
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(1) Power input (2) Grounding screw
(3) Grounding wire (4) Grounding strip
Figure 3-8 Grounding the switch through a grounding strip
z When there is no grounding strip but there is cement floor
nearby where a grounding body is allowed to be buried,
hammer an angle steel/steel pipe no shorter than 0.5 m into
the earth, with the yellow-green grounding wire of the switch
welded onto the angle steel/steel pipe and the jointing point
being processed against erosion.
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(1) Power input (2) Grounding screw
(3) Grounding wire (4) Earth
(5) Angle steel