20
Grounding the switch by using the AC power cord
If the installation site has no grounding strips, you can ground an AC-powered switch through the PE wire
of the power cord. Make sure that:
The power cord has a PE terminal.
The ground contact in the power outlet is securely connected to the ground in the power distribution
room or on the AC transformer side.
The power cord is securely connected to the power outlet. If the ground contact in the power outlet is
not connected to the ground, report the problem and reconstruct the grounding system.
Figure 23 Grounding through the PE wire of the AC power cord
(1) Three-wire AC power cable
NOTE:
To guarantee the grounding effect, use the grounding cable provided with the switch to connect to the
grounding strip in the equipment room as long as possible.
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