• For any two separate electric animal fences, each supplied from a separate energizer
independently timed, the distance between the wires of the two electric animal fences shall
be at least 2.5m. If this gap is to be closed, this shall be effected by means of electrically
non-conductive material or an isolated metal barrier.
• Do not connect two Energizers to the same earth system.
• Barbed wire or razor wire shall not be electried by an energizer.
• A non-electried fence incorporating barbed wire or razor wire may be used to support one
or more off-set electried wires of an electric animal fence. The supporting devices for the
electried wires shall be constructed so as to ensure that these wires are positioned at a
minimum distance of 150 mm from the vertical plane of the non-electried wires. The barbed
wire and razor wire shall be earthed at regular intervals.
• Follow the energizer manufacturer’s recommendations regarding earthing.
• The energizer earth electrode should penetrate the ground to a depth of at least 1 m (3 ft) and
not be within 10 m (33 ft) of any power, telecommunications or other system.
• Use high voltage lead-out cable in buildings to effectively insulate from the earthed structural
parts of the building and where soil could corrode exposed galvanized wire. Do not use
household electrical cable.
• Connecting leads that are run underground shall be run in conduit of insulating material or else
insulated high voltage lead-out cable shall be used. Care must be taken to avoid damage to the
connecting leads due to the effects of animal hooves or tractor wheels sinking into the ground.
• Connecting leads shall not be installed in the same conduit as the mains supply wiring,
communication cables or data cables.
• Connecting leads and electric animal fence wires shall not cross above overhead power or
communication 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 connecting 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 following.
Minimum clearances from power lines for electric animal fences
Power line Voltage V Clearance m
Less than or equal to 1 000 3
Greater than 1 000 and less than or equal to 33 000 4
Greater than 33 000 8
• If connecting leads and electric animal fence wires are installed near an overhead power
line, their height above the ground shall not exceed 3 m. This height applies either side of the
orthogonal projection of the outermost conductors of the power line on the ground surface, for
a distance of:
- 2 m for power lines operating at a nominal voltage not exceeding 1 000 V;
- 15 m for power lines operating at a nominal voltage exceeding 1 000 V.
• 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 satisfactory
and safe performance.
• In electric animal fences intended for deterring birds from roosting on buildings, no electric
fence wire shall be connected to the energizer earth electrode. A warning sign shall be tted to
every point where persons may gain ready access to the conductors.
• Fence wiring should be installed well away from any telephone or telegraph line or radio aerial.
• Where an electric animal fence crosses a public pathway, a non-electried gate shall be
incorporated in the electric animal fence at that point or a crossing by means of stiles shall be
provided. At any such crossing, the adjacent electried wires shall carry warning signs.
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