Installation and Operating Instructions V03
21
5.4 AC connection
5.4.1 Conditions for the AC connection
Cable Requirements
The grid connection is established using three conductors (L, N, and PE).
We recommend the following specifications for stranded copper wire.
Object Description
Value
A
External diameter
5 to 13 mm
B
Conductor cross-section
2.5 to 6 mm²
C
Stripping length of the insulated conductors
approx. 12 mm
D
Stripping length of the outer sheath of AC cable
approx. 70 mm
Larger cross-sections should be used for longer cables.
Cable design
The conductor cross-section should be dimensioned to avoid power loss in cables
exceeding 1% of rated output power.
The higher grid impedance of the AC cable makes it easier to disconnect from the grid
due to excessive voltage at the feed-in point.
Danger to life due to high voltages in the inverter
• Before establishing the electrical connection, ensure that the
miniature circuit-breaker is switched off and cannot be reactivated.
