ZyXEL Communications GS1920v2 Series User Manual page 45

Secure a green or yellow ground cable (16 AWG or smaller) to the Switch's rear panel using the M4
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ground screw.
Figure 28 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 29 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 30 Connecting to the Building's Main Grounding Electrode
Chapter 3 Hardware Panels
GS1920v2 Series User's Guide
45