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Appendix A
BASIC DEFINITIONS:
Electric Fence: a barrier which includes one or more electric conductors,
insulated from earth, to which electric pulses are applied by an energiser
Connecting Lead: an electric conductor, used to connect the energiser to the
electric fence or the earth electrode
Electric Security Fence: a fence used for security purposes which comprises
an electric fence and a physical barrier electrically isolated from the electric
fence
Public Access Area: any area where persons are protected from inadvertent
contact with pulsed conductors by a physical barrier.
Pulsed Conductors: conductors which are subjected to high voltage pulses by
the energiser.
Secure Area: an area where a person is not separated from pulse conductors
below 1,5m by a physical barrier.
GENERAL REQUIREMENTS FOR ELECTRIC SECURITY FENCES:
Electric fences shall be installed and operated so that they cause no electrical
hazard to persons, animals or their surroundings.
Electric fence constructions which are likely to lead to the entanglement of
animals or persons shall be avoided.
An electric fence shall not be supplied from two different energizers or from
independent fence circuits of the same energiser.
For any two different electric fences, each supplied from a different energiser
independently timed, the distance between the wires of the two electric
fences shall be at least 2m. If this gap is to be closed, this shall be effected
by means of electrically non-conductive material or an isolated metal barrier.
Barbed wire or razor wire shall not be electrified by an energiser.
Any part of an electric fence which is installed along a public road or pathway
shall be identified at frequent intervals by prominently placed warning signs
securely fastened to the fence posts or firmly clamped to the fence wires. The
size of the warning signs shall be at least 100mm x 200mm. The background
colour of both sides of the warning plate shall be yellow. The inscription on
the plate shall be black . The warning sign shall typically appear as depicted
in Figure x. The inscription shall be indelible, inscribed on both sides of the
warning plate and have a height of at least 25 mm.
