Husqvarna AUTOMOWER 210 C Operator's Manual page 19

3. INSTALLATION
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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.
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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.
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20 - English