B-2
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:
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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.
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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.
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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.