Siemens SIMATIC HMI Series Operating Instructions Manual page 63

Connection graphic
The figure below shows how to connect the equipotential bonding of the connection boxes to
the equipotential busbars.
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Mobile Panels 2nd Generation
Operating Instructions, 09/2018, A5E33876626-AC
Ground connection
Equipotential bonding conductor, cross-section 1.5 mm
Equipotential busbar for equipotential bonding cables, grounding connection and shield support
of the data cables
Ethernet cable
Equipotential bonding conductor, cross-section ≥ 16 mm
Parallel routing of the equipotential bonding conductor and data cable
Cable clip
Control cabinet
Installing system components
3.6 Connecting the connection box
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