ZyXEL Communications XGS2220 Series User Manual page 50

Figure 30 Grounding
Attach the other end of the ground cable to a grounding bar located on the rack where you install the
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Switch or to an on-site grounding terminal.
Figure 31 Attach Ground Cable to Grounding Bar or On-site Grounding Terminal
The grounding terminal of the server rack or on-site grounding terminal must also be grounded and
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connected to the building's main grounding electrode. Make sure the grounding terminal is connected
to the buildings grounding electrode and has an earth resistance of less than 10 ohms, or according to
your country's electrical regulations.
Figure 32 Connecting to the Building's Main Grounding Electrode
If you are uncertain that suitable grounding is available, contact the appropriate electrical inspection
Chapter 3 Hardware Panels
XGS2220 Series User's Guide
50