Sureguard Pro-Tech 5 User Instructions page 4

Terminals of the Energiser. Although uncomplicated, it has the disadvantage that power in the
electrical impulse diminishes with distance travelled through the ground.
Multi-Wire Fence
An alternative arrangement is a multi-wire
fence that incorporates one or more Earth
wires. The Earth wires can run through
metal support posts, which helps establish a
regular connection to the soil. The Earth
wires also allow you to connect additional
Earth Electrodes along the fenceline.
A multi-wire fence can have 3, 5, 7 or more
wires that are alternately connected to Live
or Earth. This system is used for fences
longer than about 1km (3000ft) and in areas
with low soil moisture, sandy soil, shallow
topsoil or drought conditions. It is also
popular for stubborn animals, vermin
control, and varying sizes of animals.
A multi-wire fence has two paths by which the electrical impulse can flow back to the Energiser:
1/ From the Live wire, through the sub-soil back to the Energiser (performance depends on the
amount of soil moisture and distance from the animal back to the Earth Electrode). 2/ Through the
two contact points of the animal with the Live and Earth wires . This design is preferred for
maximum deterrence because it has the least electrical resistance back to the Energiser.
For vermin control, e.g. foxes, wild dogs, etc., an earthed mesh fence with one or two Live wires
above make for the ultimate deterrent. The mesh stops animals from pushing through, and the
Live wires repel animals from climbing over. Climbing animals are grounded to the mesh fence, so
the electrical impulse is strong.
Earth Electrode
You must install a proper Earth Electrode. Use ONLY GALVANISED steel, namely, pipe or fence
posts (star pickets). DO NOT use bitumen covered posts or rusty metal because these will reduce
the intensity of the pulse to the animal. You want the Earth Electrode to have as much conductive
surface area in contact with sub-soil moisture as possible. Typically, you should drive the Earth
Electrode 1.5m into the ground. Don't overlook this point! Then at distances of about every
500~1000m along the fence add more Earth Electrodes and connect these to the Earth wires of the
fence. By minimising the distance that the impulse travels through the soil, you maintain strong
deterrence over long distances.
For more design information & worthwhile tips, visit our web site at:
Electric Fence Design: www.sureguard.com.au/page/electric-fence-design
Tips and videos: www.sureguard.com.au/page/video-pro-tech-5
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