User Documentation

14
Earthing and Bonding
Phase conductor size (mm²) min. protective earth size (mm²)
1.5 1.5*
2.5 2.5*
4 4
6 6
10 10
16 16
25 16
35 16
50 25
* only for internal connection
For earthing a M4 earth stud external is available. Don’t change the position of the
M4 earth bolt.
Alternativly a continuous (inner/outer) earthing bolt (M6 or M10; in either brass or
stainless steel) is optionally available for earthing the enclosure.
This M6/M10 earthing bolt should be mounted in the working area of the body of the
enclosure. The actual working area is dened in the certication drawings.
It is forbidden to mount the M6/M10 earthing bolt in the enclosure’s lid.
The use of the feed-through panels is described above.
The installer or distributor is responsible for earthing and equipotential bonding of the
enclosure.
In the lid also special earth points are available and marked inside the lid.
Take care of the length of the wire that this is long enough to open the lid in a proper
way.