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Installing a Lightning Arrester for the Network Port 99
Figure 65 Installation diagram of a network port’s lightning arrester
Installation precautions
To ensure that the network port’s lightning arrester does not affect performance,
make sure that the lightning arrester for network port is:
■ Connected properly (see Step 4 in the previous section).
■ Well grounded. The ground wire for the arrester should be as short as possible.
Ensure that it is has proper contact with the switch’s grounding screw using the
multimeter.
■ Installed completely. If the switch has more than one network ports to
interconnect with other devices using outdoor cables, you should install
lightning arresters for all network ports for protection.
Switch
Network cable indoors
Power input
Network cable from outdoors
Lightning arrester for the network port
(attached onto the chassis)
Lightning arrester ground wire
Switch grounding screw
Metal cabinet that contains the switch