Trystan Casey
Electric fences are a useful tool for farmers, gardeners, and those seeking to improve their security. They are simple to install and maintain, and can be used to enclose a pasture, garden, or chicken coop, keeping livestock and other animals contained, and deterring intruders. Before installing an electric fence, it is important to plan the layout, including the spacing and number of wires, and to purchase the necessary parts, such as an electric charger, grounding posts, and wire. The type of charger and wire will depend on the length of the fence, the type of animals being contained, and the vegetation that may grow on the conductors. Once the necessary parts have been gathered, the installation process can begin, following the specific instructions for the chosen materials. It is important to be cautious during installation to avoid electrocution and to ensure the fence functions properly.
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What You'll Learn
Plan your layout
Planning the layout of your electric fence is a crucial step in ensuring that your fence is effective and secure. Here are some detailed guidelines to help you plan your layout:
Determine the Purpose and Type of Fence:
Start by considering the purpose of your electric fence. Do you need to contain livestock, fence out predators, or protect your garden from pests? The type of animals you want to control or deter will determine the design and materials of your fence. For example, horses are typically fenced with highly visible conductors like rope or tape, while slower animals like cattle or sheep can be fenced with steel wire or polywire.
Measure and Plan the Enclosure:
Carefully measure the perimeter of the area you want to enclose. Consider the size of the enclosure you need, the number of animals you plan to contain, and the spacing required between fence posts. Decide on the length, height, and number of wires necessary for your fence. If you're installing posts, ensure they are not placed too close together or more than 40 feet apart. You may need to install stays along the wires for added stability if you have longer distances between posts.
Choose the Right Materials:
Select materials that are suitable for your specific needs. For portable or temporary fences, lightweight materials such as polywire, tape, and plastic posts are recommended. Permanent fences typically use high-quality insulators, self-insulating electro-wood, or wooden posts. Steel "T" posts are also commonly used for permanent fencing. If you're fencing in livestock, consider using high-tensile wire, while electro-rope or tape works well for horses.
Plan Gate Placement:
Determine the placement of gates within your fence. Gates require careful installation to ensure the continuous flow of voltage from one side of the gate to the other. It is recommended to run insulated cable in plastic pipe under the gate, ensuring that the ends of the pipe are sealed to keep out water. Connect all electrified wires together at gates and corners to increase the voltage along the fence.
Consider Power Sources:
Decide on a power source for your electric fence. You can choose between an electric charger near an AC outlet or a solar charger in a sunny spot. If you opt for a solar charger, consider the length of wire your charger can optimally power, as different chargers are designed for different wire lengths. Additionally, ensure that you have access to quality, moist soil to facilitate better electricity flow and enhance the effectiveness of your fence.
By carefully considering these layout planning steps, you can design an electric fence that meets your specific needs and provides a secure and functional barrier.
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Choose your wire
The type of wire you choose for your electric fence depends on the type of animal you want to fence, the terrain, and the size of the fenced area.
If you need a portable fence, you can purchase polywire and tape, plastic posts, battery-powered energizers, and reels. For a permanent fence, you can use high-tensile wire, electro-rope, or tape. Horses are best fenced with conductors that are highly visible, such as rope and tape. Slower-moving animals, such as cattle and sheep, can be fenced with steel wire or polywire.
Most temporary fences use small gauge (14 to 17 gauge) steel wire, or polywire or polytape. Metal rod or plastic posts are usually spaced 20 feet to 30 feet apart. Most permanent electric fences use high-tensile smooth wire (12.5 gauge), or heavy-duty polytape or polyrope for horses. Posts are spaced according to terrain and the size of the fenced area.
If you need to add electric fence wires to an existing non-electric fence, attach one or more "hot" wires to existing fence posts or fence wires to keep animals away from the fence. The type of animals to be controlled will determine the material selection.
For gardeners, it is important to plan to have a foot of space between the edge of the garden and any plants that are close to the edge. You will use this measurement to determine how much electrical wire you will need and approximately how many metal stakes you should get.
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Set up your charger
Setting up the charger is a critical step in installing an electric fence. Here's a comprehensive guide to help you through the process:
Choose the Right Charger
Select a charger that suits your needs. Consider the size of your fence and the number of wires you plan to electrify. If you have a large fence, opt for a charger with a higher joule rating—this will ensure a consistent charge. Chargers are rated by joules, and a higher rating doesn't mean a stronger shock but rather a more consistent electrical current. Avoid chargers with foot or mile power ratings.
Power Source Options
Electric fence chargers come with different power sources, each with its own advantages and use cases:
- 110-Volt Plug-In: This option offers the most power for your money and is often rated in joules. It is an excellent value option.
- 6-12 Volt Battery-Powered: While offering less power, this option is ideal for remote areas. It is the second-best value option.
- Solar-Powered: Solar-powered chargers are suitable for short fences in remote areas. They offer the least power for the money.
Install the Charger
Find a suitable location for your charger. Look for a weather-resilient spot near an AC outlet if you're using a plug-in charger. Alternatively, choose an area that receives ample sunlight if you're opting for a solar-powered charger. For safety, hang the charger on a post or the wall of an outbuilding, and remember not to turn it on until you've installed the fence.
Connect the Charger
Once your fence is installed, it's time to connect the charger. Use an insulated cable rated for electric fencing and connect the charger to the fence. Ensure you follow the manufacturer's instructions for proper and safe installation.
Test the Fence
After setting up the charger and connecting it to the fence, test to ensure it's working correctly. You can use a voltage tester for this purpose. Hang the tester off a wire and insert the metal prong into the ground. The tester will indicate the voltage running through your fence.
Remember, safety should be a top priority when working with electricity. Always follow the instructions provided by the manufacturer of your electric fence system, and if you're unsure, consult a professional.
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Install grounding posts
Proper grounding is essential for an electric fence to work effectively. The grounding circuit completes the electric current's path, allowing it to pass safely through an animal's body and return to the ground terminal of the charger. Without proper grounding, the fence may not deliver a shock, and animals may escape or come to harm.
To install grounding posts for your electric fence, follow these steps:
- Install at least one grounding post: Place one grounding rod near the charger and use a post-hole digger or slammer to set the grounding post. The post should be at least 6 feet (1.8 m) long, with about 2 inches (5.08 cm) above the ground.
- Space multiple grounding posts appropriately: If you need more than one grounding post, space them 10 to 20 feet (3 to 6 m) apart. The rule of thumb is to use one 6- to 8-foot ground rod per joule of energy output.
- Connect the grounding posts: Use galvanized wire or insulated cable to connect the grounding posts to each other and to the fence charger. Ensure you use a wire rated at 20,000 volts or higher.
- Check the ground system and voltage: Proper grounding is critical, so periodically check your ground system and voltage, especially during extremely wet or dry weather. Use a voltmeter designed for electric fences to test the voltage.
- Enhance grounding in dry soil: If your soil is dry, you can improve grounding by drilling a larger hole, inserting a grounding rod, and filling the hole with bentonite, a gel-like substance that wicks moisture and strengthens the current.
- Avoid utilities and other grounding rods: Do not place your grounding posts near utility poles, lines, or other grounding rods, such as those used in houses or barns. Maintain a distance of at least 50 feet to avoid stray voltage and potential disruptions to electrical or phone services.
Remember, proper grounding is key to the effectiveness and safety of your electric fence.
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Attach a grounding wire
To attach a grounding wire to an electric fence, you must first install grounding posts. These should be placed 6 feet (1.8 m) or longer into the ground, with at least 2 inches (5.08 cm) of the post left above the ground. It is recommended to have at least two grounding posts, with one placed near the charger and another 10 to 20 feet (3 to 6 metres) away from the first post.
The next step is to attach the grounding wire. This wire should extend from the ground terminal of the charger to all the grounding posts. The wire should be made of the same material as the fencing wire. Attach one end of the wire to the ground terminal on the charger unit, and then connect the other end to the grounding rod(s). It is recommended to have three 6-foot-long ground rods, spaced 10 feet apart, to ensure optimal grounding.
If you are using a mains energizer and operating on poor soil conditions, such as light or sandy soil, you may need to use more than one earth stake. In this case, space the additional stakes 9.8 feet (3 metres) apart and connect them with a lead-out cable.
Once the grounding wire is attached, your electric fence installation is almost complete. You should now have the unit installed, the electric fence wire running from your unit around the perimeter of your garden, and a short grounding wire running from your unit to the grounding rod(s).
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Frequently asked questions
You will need an electric fence wire, an electric power box, metal stakes, a grounding post, plastic hooks, round plastic rings, a wire cutter, gloves, a mallet, and a ground wire. You will also need to decide on the type of energizer you want to use, such as a 110 plug-in, battery-powered, or solar-powered energizer.
First, measure the perimeter of the garden and plan the layout of your fence. Next, pound the grounding rod into the soil and place plastic stakes around the perimeter of your garden. Then, hammer a wood stake into the ground and hang the charger unit on it. Twist one end of the wire around the positive terminal and run the wire around the garden, guiding it on the stakes. Finally, attach the ground wire to the ground terminal on the charger unit and then to the grounding rod.
The type of energizer depends on the length of your fence, the amount of vegetation that may grow on the conductors, the type of fencing material, the type of animals you are fencing in or out, and whether a 230-volt power source is readily available. A mains-powered energizer is the best option if you have access to a power source, as it is located inside a building and does not use batteries.
