Delta RTU-ECAT, Руководство по эксплуатации

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Chapter 4 Installing and Wiring
4-5
4_
4.5.1 Ground

The diameter of the ground should not be less than the diameters of the cables connected to the
terminals L and N.

If using multiple pieces of equipment, use a single-point ground.
RTU-ECAT
Another piece
of equipment
The single-point ground is better.

If you cannot use a single-point ground, use a common-point ground.
RTU-ECAT
Another piece
of equipment
The common-point ground is permitted.

Do not connect equipment ground wires together as shown below.
R TU-EC AT
Another piece
of equipment
The e quipment can n ot be g roun ded in this way.