how many joules do you need on an electric fence

How many joules do I need to charge a fence?

Feb 01, 2020 · How many joules do you need on an electric fence? 75 joules and usually less. Therefore, they are only designed to power a maximum of a few miles of wire. Generally, you will need about 10 watts of solar panel for each output joule of the energizer. Example: a 6 joule charger will need a minimum of a 60 watt solar panel. Click to see full answer.

What is the difference between volts and Joules in electric fences?

Mar 13, 2020 · However, the actual amount of Joules that can be delivered that is Output to the electrified fence will be closer to 0.7 Joules. Joules. For those designing a fence to exclude bears from attractants such as chicken coops, gardens, fruiting trees or beehives, a stored Joule rating between 0.7-1.0 should be adequate.

How many miles/Joule does a fence produce?

I.E. 1 Joule should be effective on 40 acres. However the user should understand that ground conditions, moisture, type of wire being charged and type of animals being contained are all factors that affect the success of an electric fence or …

How much ground do you need for an electric fence?

If you’re powering a multi-strand sheep fence, you might want a ratio of 0.16-0.33 miles/joule (between 3 and 6 joules per mile) to accommodate the high number of wires and the insulation value of wool. Figure 2. Energizers power miles of wire, not miles of fence There are two different energy ratings you might see on the box.

How Much power Should an electric fence have?

How many KV Should an electric fence have?

How many joules is a fence charger?

How many joules should an electric fence have for cattle?

How many KV does it take to keep a cow?

How many joules does a horse fence need?

How many joules do I need to keep deer out?

How many joules does a pig electric fence need?

How many joules are lethal?

How many joules do I need for an electric fence for bears?

What is the most powerful electric fence charger?

How do I choose an electric fence charger?

How many joules per mile of fence?

Typical recommendation is one joule per mile of fence. Keep in mind that bigger is better, until the point that induction occurs. Induction will power gates and neutral wire when voltage gets too high. Anything nearing 7,000 volts may cause induction. Click to see full answer.

What is the joule of a fence?

The joule is a mathematical equation of Voltage x Amps x Time. The longer the" on-time" of the pulse, the higher the joule rating will be and the longer the "on-time" the less safe the fencer is to use and the less effective. how big of a fence charger do I need?

How many volts does a fence line need?

The longer your fence line, the bigger charger you will need to maintain 7,000 volts along the entire length. If you have 3 miles of fence line with 4 lines of poly wire you actually have 12 miles of fencing material to be powered.

How long is an electric fence?

If you wish to install and electric fence that is one mile in perimeter, and you are charging four strands on the fence, your total fence length is four miles. Check with your fencing supplier to determine the appropriate charger for your fencing needs.

How many ground rods do you need for an electric fence?

Likewise, your electric fence energizer requires a large grounding system to collect enough electrons from the soil to complete a powerful circuit. A minimum of three ground rods should be used for each (most) energizer (s). Many 1 joule units only need 1 rod.

How effective are electric fences?

The effectiveness of any electric fence, whether it’s a one wire fence subdividing a pasture or a 9 wire fence protecting stock from predators, depends on the ability of the fence to deliver an unpleasant shock to animals that touch it. The ability of a fence to deliver that shock depends on three things: 1 the energizer 2 grounding 3 the fence design

How long does an energizer last?

A good energizer has an intense pulse lasting for 0.0003 seconds. These short pulses eliminate the risk of fire (the pulse is so short that no heat builds up in the wire). Poorer quality energizers have pulse lengths of 0.003 to 0.3 seconds. This longer “on” time may allow sparks to arc and heat to build up.

What type of batteries are used for fences?

For longer or permanent fences or for short temporary fences passing through tall wet grass (high leakage), larger energizers powered by 12-volt rechargeable wet cell batteries should be used. Deep cycle batteries are the batteries of choice. They can be completely discharged and recharged repeatedly.

What is the grounding system for an electric fence?

The grounding system for an electric fence is a little like a radio antenna. With a radio, the bigger the antenna, the better the reception. Likewise, your electric fence energizer requires a large grounding system to collect enough electrons from the soil to complete a powerful circuit.

Is solar energy expensive?

In permanent installations, solar is expensive but in the long run a viable alternative to constantly changing batteries. For longer or permanent fences or for short temporary fences passing through tall wet grass (high leakage), larger energizers powered by 12-volt rechargeable wet cell batteries should be used.

How many joules per mile of fence?

Typical recommendation is one joule per mile of fence. Keep in mind that bigger is better, until the point that induction occurs. Induction will power gates and neutral wire when voltage gets too high. Anything nearing 7,000 volts may cause induction.

How much of the output joules are stored?

Output joules are approximately 70% of the stored joules. Even the voltage at various resistance levels across the terminal (try 25 ohm or less on the bigger units) can be misleading because that does not take into account the on time of the pulse.

How much joule does a bear energizer need?

Putting a larger energizer on a smaller fence simply places a band aid on the issues along the fence line. You need at least 1 output joule per mile of fence. For bears, you want to make sure you have a high-quality energizer.

Why is the conductor of a fence so small?

If there is very little load on the fence, the conductor (wire) can be very small like the stainless-steel wires in twine because very little amperage is needed.

How many miles/joule can an energizer power?

Many manufacturers claim their energizers can power 8-20 miles/joule of output, but these are numbers obtained under ideal laboratory conditions. In practice, if you have a one- or two- strand fence that is free from weeds, tall grass, and branches touching it, you might get 3-6 miles/joule.

How many miles of wire does a single strand fence need?

The other point to bear in mind is that energizers power miles of wire, not of fence. If you have a single strand fence that goes five miles, it requires much less power than a five strand fence going five miles, because the multi-strand is actually 25 miles of wire (Figure 2).

What is an energizer for an electric fence?

Output joules rating must be capable of delivering the voltage along the length of wire in the fence. The energizer (also called a fencer) is the cornerstone of any electric fence.

What is the most economical power source for a fence?

The most economical power source (hydro, batteries, or solar) depends on ease of access to fencer. Output voltage needs to be high enough to get the attention of the livestock being contained. Output joules rating must be capable of delivering the voltage along the length of wire in the fence.

How to choose an energizer for a hydroelectric fence?

The first step in selecting an energizer is to determine your power source. If the fence is close enough, an energizer that plugs into the hydro is often the cheapest and easiest solution. As the fence gets further away from an outlet, running wires becomes expensive and other power options start to look more attractive.

What to do if fence is close to hydro?

If the fence is close enough, an energizer that plugs into the hydro is often the cheapest and easiest solution. As the fence gets further away from an outlet, running wires becomes expensive and other power options start to look more attractive.

Can you use solar panels on electric fences?

For electric fences in more remote locations, a solar panel may be the best solution. These tend to be the most expensive power source for a fence, but because the panel recharges the battery, it’s less likely to lose power than batteries alone.

How many volts does a fence need?

Volt Meter. A volt meter will allow you to test your electric fence and ensure it is working properly. Generally speaking your fence will need to run at 5,000-6,000 volts for deer, which you can check using your volt meter. Best results will come from a volt meter made by the same manufacturer as the energizer.

Do fence posts carry electric charge?

Fence posts made from fiberglass, composite material, or plastic don’t carry an electric charge, so you don’t have to worry about adding insulators. You also won’t have the issue of a failed insulator causing a short in your fence. This can compensate for the added expense of self-insulated posts.

What is the first component of an electric deer fence?

The first component of an electric deer fence is the energizer , which creates the electric current. An energizer can be battery-powered, solar-powered, or made to plug in to a 110 volt outlet. We chose a solar-powered charger for our deer fence because we did not have access to a nearby electrical outlet.

Do you need a grounding system for an electric fence?

Grounding. Along with your energizer you’ll need a grounding system. A good ground is essential to delivering a shock when a deer encounters your fence. Most problems with electric fences stem from poor grounding. Another rule of thumb is that for every output joule of the energizer you need three feet of buried ground rod.

Can a failed insulator cause a short in a fence?

You also won’t have the issue of a failed insulator causing a short in your fence. This can compensate for the added expense of self-insulated posts. If you’re using metal posts like t-posts for your fence you must use high-quality insulators like a bull-nose insulator.

How tall is a deer fence?

This allows the fence to effectively exclude deer even though it’s only 24 inches tall.

Step 1

Select the type of area you will be fencing. (Note: If needing to convert miles, choose “other” and calculate number of miles to feet.)

Step 2

Choose the type of livestock, garden, or other for what you are fencing for.

Step 3

Choose how far apart you want the fence posts spaced. (Note: Always fence to the needs of your livestock, and environmental conditions. Example: natural water, rolling hills, high wind and woodland areas, may require an extra post to shorten distance between posts).

Step 4

Hit the buy now button and choose the JAG Products, Inc. Insulator that fits your needs. INVERSE (tm) Insulator for T-posts, or Wood Post Insulator.