|1.||There are various power sources for electrified fence units: 230V mains, 12V battery and 9V battery. How can I know what's best for me?|
|2.||How can I know if my earth is working well?|
|3.||I have my M300/600/1200 running at half power (yellow knob), but if there is a short-circuit, the display indicates that full power is present.|
|4.||There is too little current in the wire.|
|5.||I cannot get a connector to fit my Gallagher unit.|
|6.||Could my Gallagher electric fence unit be supplying less power as the years go by?|
|7.||My DVM shows "LO", but I cannot find any faults in the fencing.|
|8.||My Gallagher unit interferes with radio/TV reception. What can I do about it?|
|9.||What kind of conductor can I use for my fencing: tape, cord, galvanised wire, vidoflex?|
1. There are various power sources for electrified fence units: 230V mains, 12V battery and 9V battery. How can I know what's best for me?
- In principle, a 230V unit provides the best and most economical solution. It is the most reliable, and the price per joule (power unit) supplied is by far the lowest. The proviso is that it needs a stop switch close by.
- A 12V unit is used if you have to electrify extensive runs of fencing starting from the building but without a stop switch. The advantage of a 12V battery is that it can be charged, making it more environmentally friendly (no flat batteries), is economical and has a relatively high output. The battery needs charging about 1 x per month. Solar panels can be used for charging.
- A 9V unit can be used for all kinds of shorter and temporary fencing. Examples are crop or animal separation. Easy to operate but with less power than with a 12V unit. Another common use is for fencing in stalls. If used indoors (barns), fencing cannot legally be supplied with 230V. Examples include barriers for dairy cattle and electrical barriers in poultry enclosures to stop overcrowding and egg pecking.
Click here to see how to test your earthing system.
3. I have my M300/600/1200 running at half power (yellow knob), but if there is a short-circuit, the display indicates that full power is present.
Both displays on these units only work at full power.
They cannot show they are running at half power.
Check the voltage directly at the unit. If it is OK, the earthing may be insufficient. Make sure that the earth matches the guidelines for the unit.
Another cause can be that the connections in the fencing are making poor contact, are rusty or loose, for example. Make sure you have good connectors and use good wire clamps (#010851 or #010868). There may be leakage into the surrounding area. Make sure that the conductors are mounted in good insulators and that nothing is resting against the conductors (undergrowth).
There is a "reference earth" on the MBX and M300/600/1200 units - a black knob. A wire should be attached here from a small spike stuck in the ground. This wire must not be connected to the earth on the unit! The unit uses the connection for measuring - it is used as a zero point.
No. But it's often the case that older equipment involves older mesh which gradually loses its insulation. This can occur through worn insulators, rusty iron wire, tangled nylon wire, leaks in the earth cable or a less effective earthing system.
It can also happen over the years that expanded meshing means the electrified wire has too little capacity for current requirements and needs replacing by a heavier duty type with more joules.
The DVM shows "LO" to indicate that the DVM battery is going flat.
This message has nothing to do with the condition of the fencing. Replace the DVM battery (9 Volt battery pack: 9V MN1604 6LR61).
Our equipment is shielded to the highest modern standards and should not cause interference. This kind of interference can have two causes:
- The earth cable is in poor condition or not connected. Improve the earth and check the connections.
- The fence wiring is making poor contact or is shorting the insulators. Check the connections and make sure that the power cannot flash over. A quick way of checking is to disconnect the fencing and see if the interference is still present.
Click here for the fencing calculator to see what is the best kind of conductor for your application.
If your question is not in the list (below/above), please send us your question and we will be happy to answer it.