Minimum clearances from power lines for electric animal fences
Power line voltage
≤1000 V
>1000 V to ≤33,000 V
>33,000 V
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 (10'). This height applies to either side of
the orthogonal projection of the outermost conductors of the
power line on the ground surface, for a distance of:
2 m (6'6") for power lines operating at a nominal voltage
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not exceeding 1000 V.
15 m (50') for power lines operating at a nominal voltage
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exceeding 1000 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 fitted
to every point where persons may gain ready access to the
conductors.
Where an electric animal fence crosses a public pathway, a
non-electrified 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 electrified wires
shall carry warning signs.
Any part of an electric animal fence that is installed along a
public road or pathway shall be identified at frequent intervals
by warning signs securely fastened to the fence posts or firmly
clamped to the fence wires.
The size of the warning sign shall be at least 100x200 mm
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(4x8").
The background colour of both sides of the warning sign
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shall be yellow. The inscription on the sign shall be black
and shall be either:
or the substance of "CAUTION: Electric fence".
The inscription shall be indelible, inscribed on both sides of
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the warning sign and have a height of at least 25 mm (1").
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Clearance
3 m (10')
4 m (13')
8 m (27')
Ensure that all mains-operated, ancillary equipment connected
to the electric animal fence circuit provides a degree of isolation
between the fence circuit and the supply mains equivalent to
that provided by the energizer.
Protection from the weather shall be provided for the ancillary
equipment unless this equipment is certified by the
manufacturer as being suitable for use outdoors, and is of a
type with a minimum degree of protection IPX4.
Electric fencing and
your energizer
Congratulations on the purchase of your energizer. This product
has been designed using the latest technology and construction
techniques. It has been engineered to give superior
performance and many years of service.
It is important to read these instructions carefully and
thoroughly. They contain important safety information and will
assist you in ensuring that your electric fencing system gives
maximum performance and reliability.
How does an electric fence work?
An electric fence system comprises an energizer and an
insulated fence. The energizer puts very short pulses of
electricity onto the fence line. These pulses have a high voltage,
but are of very short duration (less than 3/10,000ths of a
second). However, a shock from an electric fence pulse is very
uncomfortable and animals quickly learn to respect electric
fences. An electric fence is not only a physical barrier, but is
also a strong psychological barrier.
What are the benefits of an electric
fence?
An electric fence has many benefits over conventional fencing:
Requires less labour and materials to construct.
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Flexibility to change or add paddocks when required. The
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use of strip grazing techniques can allow temporary
fencing to be quickly and easily erected or removed.
Controls a broader range of animals.
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Minimises damage to expensive livestock when compared
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with other fencing mechanisms, for example barbed wire.