All mains operated energizers must
conform to local standard
requirements.
- Do not use barbed wire on Power
Fences as physical entanglement
could occur.
- Do not use more than one energizer
to electrify any one fence line at any
one time.
- A faulty electric fence can produce a
spark, so keep combustible materials
away.
- In fire prone areas, power the fence
from the reduced power terminal or
turn the energizer off on high risk
days.
- All wires should be at least 5.45m
(18ft) above the ground when
crossing public highways.
- Try to avoid any fence line passing
under or parallel to power lines. Any
crossing should be made at right
angles. Where they are near
overhead power lines, do not allow
fence wires higher than 2m (6ft)
above the ground.
- Do not attach electrified fence wires
to any mains power support (power
pole) without authorisation.
- Interference on Telecom lines is the
responsibility of the landowner and
is prohibited. Do not run electrified
wires under telephone wires or
parallel to underground telephone
cables for any distance.
- Keep electrified wires well away
from radio aerials.
- Always seek Local Body approval
and advice before constructing any
electric fence system near roadways,
stock routes, railways etc.
- A Power Fence is safe if it can be let
go – entanglement can be
dangerous.
- The Energizer delivers a high energy,
short duration pulse approximately
once per second which causes a
violent reaction of the nervous
system of a non-permanent nature.
The reaction can cause injury if it is
unexpected. Use Power Fence
warning signs on the fence where
the public have access.
- Do not touch the live fence with
your head or mouth, or become
entangled.
- Childproofing for Power Fences is
very important. A young child may
get confused/disoriented when
touching or climbing the fence, and
not be able to physically get away
from the fence. Young children
should be kept away from Power
Fences.
8.1 Warning signs
Electric fences bordering public
thoroughfares are required to have a
warning sign (G6021) at least every
20m (65ft).
Check with your local authority for
specific regulations.
8.2 Bird deterrent
A live earth system is recommended for
deterring birds from roosting on
buildings. A switch should be installed
to provide means of isolating the
energizer from all poles of the supply
and clear warning signs should be
fitted at every point where people may
have ready access to the conductors.
8.3 Radio and telephone
interference
Gallagher energizers comply with usual
Telecom and International standards
and safety regulations. However,
problems can arise for a number of
reasons and can be difficult to
eliminate in areas with poor radio
reception.
To avoid radio interference:
- The energizer earth must be highly
conductive (refer to “4.3.1 Installing
the Earthing (Grounding) System”)
- The energizer must be well away
from any mains power supply earth
and neither should be connected to
water pipes.
- Do not allow an energizer earth
wire to touch a building which can
act as a broadcast aerial. Use
Leadout Cable G627 to insulate the
earth wire.
- Earth the offending radio and
improve its aerial. Try to keep both
as far away from the energizer and
fence lines as possible.
- The mains power supply earth must
be in good condition.
- The mains power supply plugs and
sockets for the energizer and radio
must be in good condition with no
loose connection.
- Do not have electric fence wires
running for any distance parallel to
telephone wires or power lines. This
particularly applies if the electric
fence wire is carrying high current,
such as a leadout wire to a large
fencing system.
- Make sure all joins on the fence and
earth wires are “figure eight” or “reef knots” and that all other
connections are joint clamped
securely so there is no sparking. Re tighten
clamps every summer.
- Ensure all cut out switches are in
good condition with no loose
connections.
- Use only top quality insulators. Poor
quality insulators are short lived and
cause problems that are difficult to
trace. Sparking inside these also
causes radio interference.
- Under gateways, use Leadout Cable
(G6270 or G6272) threaded through
plastic piping for physical protection,
avoiding sharp objects The piping
and cable must be flexible to allow
for strainer post movement.
- Spray grass along fence lines closest
to the radio with desiccant.
- To find leaks, shorts, faulty joins,
broken wires, and faulty insulators,
walk the fence lines with a transistor
radio turned off the station and on
high volume. It will click when a
fault is close.
- If you have done all the above and
there is still a problem, do the
following test:
Operate the energizer without the
earth or fence connected. If the
interference stops then the fault is in
the fence line or earth. If it is still
there then the fault is in the
energizer or in the mains (110V/
230V) power supply connections.
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