H3C WX3000 Installation Manual page 95

Figure B-1 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, you should install a lightning arrester for each of the
network interfaces, thus to guard the interfaces against possible damages.
B-2