5
English
may be used to support one or more o
ff
-set electri
fi
ed wires of an
electric animal fence. The suppor ng devices for the electri
fi
ed
wires shall be constructed so as to ensure that these wires are
posi oned at a minimum distance of 150mm from the ver cal
plane of the non-electri
fi
ed wires. The barbed wire and razor wire
shall be earthed at regular intervals.
• Follow the energizer manufacturer’s recommenda ons regarding
earthing.
• The energizer earth electrode should penetrate the ground to
a depth of at least 1m (3 ) and not be within 10m (33 ) of any
power, telecommunica ons or other system.
• Use high voltage lead-out cable in buildings to e
ff
ec vely insulate
from the earthed structural parts of the building and where soil
could corrode exposed galvanised wire. Do not use household
electrical cable.
• Connec ng leads that are run underground shall be run in conduit
of insula ng material or else insulated high voltage lead-out
cable shall be used. Care must be taken to avoid damage to the
connec ng leads due to the e
ff
ects of animal hooves or tractor
wheels sinking into the ground.
• Connec ng leads shall not be installed in the same conduit as the
mains supply wiring, communica on cables or data cables.
• Connec ng leads and electric animal fence wires shall not cross
above overhead power or communica on lines.
• If connected to a mains power circuit that doesn’t have a Residual
Current Device (RCD), then a plug-in RCD should always be used.
• Crossings with overhead power lines shall be avoided wherever
possible. If such a crossing cannot be avoided it shall be made
underneath the power line and as nearly as possible at right
angles to it.
• If
connec ng leads and electric animal fence wires are installed
near an overhead power line, the clearances shall not be less than
those shown in the table below.
Minimum clearances from power lines for electric animal fences
Power line Voltage V
Clearance m
Less than or equal to 1 000
Greater than 1 000 and less than or
equal to 33 000
Greater than 33 000
3
4
8
• If
connec ng leads and electric animal fence wires are installed
near an overhead power line, their height above the ground shall
not exceed 3m
• This height applies either side of the orthogonal projec on of the
outermost conductors of the power line on the ground surface,
for a distance of:
• 2m for power lines opera ng at a nominal voltage not
exceeding 1000V;
• 15m for power lines opera ng at a nominal voltage exceeding
1000V.
• Electric animal fences intended for deterring birds, household
pet containment or training animals such as cows need only be
supplied from low output energizers to obtain sa sfactory and
safe performance.
