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© JVA Technologies. www.jva-fence.com
6.5 BI-POLAR SYSTEM
A Bi-Polar fence is a combination of both the earth return system and the
fence return system. The benefits are that
1. If either the positive OR negative fence wires are loaded with a fault
and have a low voltage, the other wire will not be affected by the
fault and still have good voltage on it.
2. A bi-polar fence will interfere with wireless signals (like digital TV) less
because the electrical noise generated by the fence will cancel itself
out.
3. It is less affected by parasitic elements of the fence, which means it
can power longer fences more effectively.
6.6 EARTHING YOUR ENERGISER
The best way to earth your energiser is using a 1 meter galvanized earth
stakes. If the earth stake is too rusty it may not work properly. The best
place to locate the earth stake is somewhere close to where the fence
starts and that is kept damp like a garden bed, a water course, or the
overflow from a rain water tank. Do not connect the earth of your en-
ergiser to a metal shed or the same earth your home electricity system
uses. It is also advised not to use any metal water pipes as this could lead
to someone receiving a shock from a tap.
The electrical circuit is fully closed
when the animal touches both +ve
and -ve wires
Where the ground permits good current flow (moist soil),
current can flow in both directions to complete the circuit
Earth
Stake
