Husqvarna 230 ACX/220 AC Operator's Manual page 23

3. INSTALLATION
3012-688US
Boundaries for the working area
If a high obstacle, for example a wall or fence,
borders the working area, the boundary wire should
be laid 14" from the obstacle. This will prevent
Automower from colliding with the obstacle and
reduce body wear.
3012-382US
If the working area borders against a small ditch, for
example, a flower bed or a small elevation, e.g. a low
verge (1" - 2"), the boundary wire should be laid 12"
inside the working area. This prevents the wheels
from driving into the ditch or up onto the verge.
3012-381US
24 - English