Umair Gaines
Electric fence energizers are devices that obtain electrical energy from an external power source and transmit it through the fence with a short, high-voltage pulse. When an electric fence fails, it is important to check the energizer to identify the root cause and determine if repair or replacement is necessary. This involves disconnecting the fence from the energizer, performing diagnostics using tools like electric fence testers, and checking for issues such as corroded terminals, AC circuit breaker problems, dead batteries, or blown input circuit fuses. If the energizer is functioning, the issue may lie in the fence itself, such as downed wires, loose debris, or vegetation touching the fence, which can ground the current and render the fence ineffective.
| Characteristics | Values |
|---|---|
| Electric fence energiser lifespan | Electric fence energisers don't last forever and will eventually need to be repaired or replaced. |
| Repair vs. replacement | Replacing the charger is easier and more cost-effective than repairing it, which can be time-consuming. |
| Troubleshooting | Before assuming the charger is faulty, check the fence for trouble spots like downed or broken wires, debris, vegetation, or branches that could be grounding the current. |
| Safety | Always unplug the electricity source and disconnect ground wires from the controller box before attempting repairs to avoid electric shock. |
| Inspection | After making repairs, reconnect the energiser and inspect for signs of electric surge, burnouts, sparks, flames, or a burnt smell. If any of these are detected, disconnect the energiser and address the issue. |
| Testing | Use an electric fence tester to check for voltage readings. If there is no reading, the problem could be a corroded terminal, AC circuit breaker, dead batteries, or a blown input circuit fuse. |
| Voltage requirements | For sensitive animals, the fence should have at least 2,500 volts, and for robust animals, at least 4,000 volts. |
| Diagnostic tools | Use a fence tester, AM/SW radio, or a screwdriver for basic voltage checks. For solar chargers, check the battery voltage and replace if underperforming or over three years old. |
| Common issues | Common problems include vegetation touching the line, inadequate earthing systems, faulty outlets, and issues with gates and wiring. |
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What You'll Learn
Check for trouble spots along the fence length
Before assuming that your charger has gone bad, walk the length of the fence and check for trouble spots. Any downed or broken wire or loose debris hanging off the fencing can ground the current, rendering the fence useless. Troubled spots on the fence must be repaired or cleaned up before attempting to replace the energizer.
Unplug the electricity source to your electric fence and disconnect the ground wires that feed into your controller box. If an electric current runs back into the wires, you’ll avoid getting shocked. Take your screwdriver and loosen the hot wire’s nuts from the mounting screw on the fence energizer unit. Push away the wire from the hot bolt and put back the nut. Unscrew any support or mount brackets from the fence or wall. Scrutinize the mounts for signs of wear such as rust and/or missing screws.
Check the insulators along the fence line for any cracks, breaks, or signs of wear. Damaged or deteriorated insulators can compromise the insulation of the wires, leading to reduced fence performance. Also, check to see if insulators are missing. Replace any damaged insulators with new ones that are compatible with your fence system. Ensure proper installation and secure attachment to the fence posts.
Vegetation, including tall grass, weeds, and tree branches touching or very near the hot wire of your fence, will cause grounding issues. Trim back tree branches and mow along fence lines where tall grass is an issue. Also, look for any debris on the ground, such as tree branches, roots, rocks, or uneven soil. When using portable electric fencing, mow paths with a lawnmower, brush hog, or weed whacker. Or, you can beat down a path with the wheels of a four-wheeler, UTV, or tractor. This will help prevent unnecessary grounding issues, especially with fences used with goats and sheep.
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Disconnect the energiser and use a tester to check for faults
To repair an electric fence energiser, it is important to first disconnect the energiser and use a tester to check for faults. This is a crucial step to identify any issues with the electric fence and determine if repairs or replacements are necessary.
Before disconnecting the energiser, ensure that you unplug the source of electricity to your electric fence. This is a safety precaution to prevent any accidental electric shocks. Disconnect the ground wires that feed into your controller box. You can then loosen the hot wire's nuts from the mounting screw on the fence energiser unit using a screwdriver. Push the wire away from the hot bolt and secure it with the nut.
Once the energiser is disconnected, you can use a tester to check for faults. An electric fence tester will help you identify any issues with the fence's functionality. Connect the tester to the energiser and observe any readings. If there are no readings, potential causes could include a corroded terminal, a faulty AC circuit breaker, dead batteries, or a blown input circuit fuse.
In addition to using a tester, you can perform a visual inspection of the fence. Walk along the length of the fence and check for any trouble spots, such as downed or broken wires, loose debris, or vegetation touching the fence. These issues can cause the current to ground, rendering the fence ineffective.
By disconnecting the energiser and utilising a tester, you can identify faults and determine the necessary repairs or replacements for your electric fence energiser. Remember to prioritise safety and follow appropriate procedures when working with electrical equipment.
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Identify and fix any faulty connections
When repairing an electric fence energiser, it is important to identify and fix any faulty connections. This can be done by following these steps:
Firstly, ensure that the energiser is turned off and unplugged, and disconnect the ground wires that feed into the controller box. This is important for safety reasons, as it will prevent the risk of electric shock. Next, use a screwdriver to loosen the hot wire's nuts from the mounting screw on the fence energiser unit. Push the wire away from the hot bolt and secure it with the nut.
Now, you can begin to inspect the fence for any signs of damage or trouble spots. Check for any downed or broken wires, loose debris, or vegetation that may be hanging off the fencing and grounding the current. These trouble spots must be repaired or cleaned up before attempting to replace the energiser. Any signs of electric surge or burnouts, such as sparks or a burnt smell, indicate a problem that needs to be addressed.
Additionally, use a fence tester to check for any voltage readings. If there is no voltage, the problem could be due to a corroded terminal, AC circuit breaker, dead batteries, or a blown input circuit fuse. A multimeter can also be used to test specific parts, such as the capacitor, but there are specific tools for testing these components.
By following these steps, you can identify and fix faulty connections when repairing an electric fence energiser.
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Check for vegetation touching the fence
Vegetation touching an electric fence can cause several problems. Firstly, it can reduce the power going through the fence line. This can happen when voltage and amperage are drained from the fence to the earth. In heavy weed conditions, the fence has a heavy load and low resistance, which can short out your fence. Therefore, it is important to keep the vegetation around your fence well-maintained.
To prevent vegetation from causing issues with your electric fence, you should keep an eye on the condition of the vegetation around your fence, especially during the spring and summer months when there is rapid vegetation growth. Weekly maintenance of your property can go a long way. Pull or use a weed whacker near the fence line and posts to keep the vegetation in check.
If you are in an area with high rainfall or fast grass growth, you will need a higher-powered energizer to compensate for the increased vegetation pressure on the fence line. The more power your energizer can put through the wires, the more problems you can have with the fence and still keep a decent charge.
Regularly test your fence and address any issues as soon as they arise. When you find your fence has lost power, is running low on voltage, or has dropped a charge, you will need to find out what went wrong. Check for any vegetation touching the fence line and clear it away.
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Check for sparks, flames, or a burnt smell
When repairing an electric fence energiser, it is important to check for sparks, flames, or a burnt smell. This is a crucial step to ensure safety and identify any potential issues. Here are some detailed instructions on how to perform this check:
Firstly, before reconnecting the energiser to the fence, ensure that the electricity source is unplugged and the ground wires disconnected from the controller box. This is a safety precaution to prevent accidental electric shocks. Then, carefully reconnect the energiser, following the manufacturer's instructions.
Once the energiser is reconnected, it's time to carefully inspect the fence for any signs of sparks, flames, or a burnt smell. Be vigilant and keep your eyes open for any flashes of electricity or sparks, as they could indicate a problem. Pay close attention to any unusual activity or sounds that might accompany these visual cues.
Additionally, use your sense of smell to detect any burnt odours coming from the fence or the surrounding area. A burnt smell could indicate an electrical burnout or an issue with the energiser. If you encounter any of these warning signs, it is important to act promptly.
In the event that you observe sparks, flames, or smell something burning, immediately disconnect the energiser from the fence. Turn off the energizer and separate the energiser from the fence connections. By doing so, you can prevent further damage and potential safety hazards. Once disconnected, carefully examine the components for any signs of damage, such as melted parts or charred marks.
Finally, after identifying the issue, proceed to fix the problem or seek professional assistance if needed. Repairing an electric fence energiser can be complex, so it is important to prioritise safety and consult experts or official repair guides if you are unsure about any steps. Remember, working with electricity can be dangerous, so always take the necessary precautions and only proceed with repairs if you feel confident in your abilities.
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