Siemens SCALANCE X-300EEC, Compact Operating Instructions

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Protective ground
When the device is operated with multirange power supply unit 100 to 240 VAC / 60 to 250
VDC, the protective ground is connected in addition to the functional ground.
CAUTION
Danger from line voltage
Grounding simply via the housing is inadequate.
In this case, connect the functional ground to ensure reliable operation.
With devices with a supply voltage of 100 to 240 VAC / 60 to 250 VDC, you should also
connect the protective earth to the grounding bolt.
To wire up the protective ground, use a copper cable of category 14-8 AWG or cable with a
cross-section of 1.5 to 6 mm².
Position
On the SCALANCE X-300EEC, the grounding bolt is on the bottom of the device.
Figure 6-1 Grounding bolts on the bottom of the X-300EEC housing
Connecting
6.5 Connecting the grounding
SCALANCE X-300EEC
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Compact Operating Instructions, 11/2019, A5E02630809-14