Fronius Symo Hybrid 3.0, Installation Instructions Manual, Page: 16 / 40

Cross section of
the AC cable For a standard M32 metric screw joint with a reducer:
Cable diameter from 7-15 mm
When using an M32 metric screw joint (reducer removed):
cable diameter from 11-21 mm
(with a cable diameter of less than 11 mm, the strain-relief force is reduced from 100 N to
a maximum of 80 N)
With cable diameters greater than 21 mm, the M32 screw joint must be replaced by an
M32 screw joint with a larger clamping area – item number: 42,0407,0780 – strain-relief
device M32 x 1.5 KB 18–25.
Requirements for
the neutral con-
ductor Note!
- Ensure that the grid neutral conductor is grounded. This may not be the case for IT
grids (insulated grids with no grounding); it will then not be possible to use the
inverter.
- In order to use the inverter, the neutral conductor must be connected. A neutral con-
ductor that is too small may adversely affect the inverter feeding energy into the grid.
The neutral conductor must therefore be the same size as the other live conductors.
Connecting the
inverter to the
public grid (AC)
1 2
3
Note! Observe the torque values marked
on the side underneath the terminals.
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