Siemens SIMOTION D4 5-2 Series Commissioning And Hardware Installation Manual page 44

Connecting
3.2 Safety information for wiring
Figure 3-2
The protective conductor connections must be dimensioned as follows:
Table 3- 1
Line supply cable in mm²
Up to 16 mm²
From 16 mm² to 35 mm²
From 35 mm²
For materials other than copper, the cross-section should be increased so that as a
minimum, the same conductivity is attained.
44
Protective conductor connection, cabinet with mounting plate / equipotential bonding
surface
Conductor cross-section for copper protective connections
Copper protective connections in mm²
The same as the line supply cable
16 mm²
0.5 x line supply cable
Commissioning and Hardware Installation Manual, 02/2012
SIMOTION D4x5-2