H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 45)

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Figure 37 Installation of a lightning arrester for network interface
Precautions
To ensure performance of the lightning arrester for network interface during installation, observe the
following rules:
• Properly connect the lightning arrester for network interface, with IN connecting to the lightning
arrester while OUT connecting to the network interface of the switch.
• Correctly ground the lightning arrester. When connecting the ground cable, make sure that the
ground cable is of a proper length and has a good touch with the grounding screw of the switch.
Check the ground cable with a multimeter after connection.
• Install adequate lightning arresters for network interfaces. When there are more than one network
interface connecting to outdoor cables, install a lightning arrester for each of the network interfaces
to guard the interfaces against possible damages.