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2. Remove the hex nut of a grounding post on the grounding strip.
3. Attach the ring terminal of the grounding cable to the grounding post on the grounding strip, and
secure the ring terminal to the grounding post with the hex nut.
Figure 17 Connecting the grounding cable to a grounding strip
(1) Hex nut (2) Ring terminal
(3) Grounding post (4) Grounding strip
Grounding the switch by using the AC power cord
If the installation site does not have grounding strips, you can ground an AC-powered switch through
the protective earth (PE) wire of the power cord. Make sure the following requirements are met:
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.
NOTE:
If the ground contact in the power outlet is not connected to the ground, report the problem and
reconstruct the grounding system.
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