EN
12
warning signs at regular intervals. The warning sign should have a yellow
background and be at least 100 mm x 200 mm large, and have the words
“Caution Electric fence” or a symbol to represent a hand and shock.
The inscription shall be indelible, 25 mm tall minimum and inscribed
on both sides of the warning sign.
Electric fences must not be supplied from two separate
energisers or from independent fence circuits of the same energiser.
Avoid contacting electric fence wires especially with the head, neck or
torso. Do not climb over, through or under an electric fence. Use a gate or
a specially designed crossing point.
Constructions that could lead to entanglement should be avoided.
For any two separate electric animal fences, each supplied from a
separate energiser independently timed, the distance between the wires
of the two electric animal fences shall be at least 2.5 m. If this gap is to be
closed, this shall be affected by means of electrically nonconductive
material or an isolated metal barrier.
Barbed wire or razor wire MUST NOT be electrified by an energiser.
A distance of at least 10 m shall be maintained between the energiser
earth electrode and any other earthing system connected parts such as
the power supply system protective earth or the telecommunication
system earth.
Connecting leads that are run inside buildings shall be effectively
insulated from the earthed structural parts of the building. This may be
achieved by using insulated high voltage cable.
Connecting leads that are run underground shall be run in conduit of
insulating material or else insulated high voltage 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 fence wires shall not cross above overhead
power or communication lines.
If an electric fence has to be installed under or near overhead power
lines, do not install fence wires higher than 3 m from the ground. This
height limit is applied up to a walking distance of 2 meters when looking
straight up at the power line if power line voltage is up to 1000 V or less,
or up to 15 m for power lines with higher voltage. Additionally, the fence
or any part of it should be no closer to overhead wires than the values
shown below:
