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Great Fence: Electrified High-Tensile Woven Wire

By   /  August 26, 2013  /  8 Comments

Rebekah Perry sent us this piece on her experience with electric fencing. We’d love to hear from you about your own experience as well!

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Rebekah's heifers in their pasture.

Rebekah’s heifers in their pasture.

How is it that flocks and herds can grow so fast? Ten ewes turned into 20 and starting with one steer we suddenly find ourselves with 15 head! Well, okay, it wasn’t that sudden, but it didn’t take that long either, with one phenomenal Jersey milker and a supply of dairy bull calves.

Now what? Now we need some permanent fence around our fields to make grazing easier and to keep the animals out of the swampy areas & sugar woods. A visit with Nick Commerci from the St Johnsbury NRCS office assured us that they could help fund some fences so we delved into the first challenge of the project – pouring over maps and areal photos and countless walks around the fields to figure out the best fence layout around buildings, determining exactly where gates and corners would go, counting posts and measuring field edges so we could order the ~12,000′ of fence that NRCS agreed to help with.

 

According to the manufacturer: "This electrifiable hi-tensile woven wire is more effective than other conventional fences when not electrified and extraordinarily effective when electrified. It has 7 horizontal strands, 36 inch height, and 24 inches between vertical spaces. The wire used is a 12.5 gauge, minimum 180,000 psi for superior strength. The fixed knot holds the wires firmly in place at Horizontal spacings from the bottom of 4-1/2", 5", 5-1/2", 6", 7", 8". Multiple Design Functions - Basically No Maintenance - 3-4 Times Stronger than Standard Farm Store Woven Wire - Requires about 1/2 the Posts needed for Standard Field Fence - Gives with Pressure but Maintains its Shape - Does not sag with Downward Pressure - Retains its tension - Class III Galvanized Coating with the addition of zinc/aluminum - Increased Longevity 3-4 times - Rust and Corrosion Resistant - Deters Predators"

According to the manufacturer: “This electrifiable hi-tensile woven wire is more effective than other conventional fences when not electrified and extraordinarily effective when electrified. It has 7 horizontal strands, 36 inch height, and 24 inches between vertical spaces. The wire used is a 12.5 gauge, minimum 180,000 psi for superior strength. The fixed knot holds the wires firmly in place at Horizontal spacings from the bottom of 4-1/2″, 5″, 5-1/2″, 6″, 7″, 8″. Multiple Design Functions – Basically No Maintenance – 3-4 Times Stronger than Standard Farm Store Woven Wire – Requires about 1/2 the Posts needed for Standard Field Fence – Gives with Pressure but Maintains its Shape – Does not sag with Downward Pressure – Retains its tension – Class III Galvanized Coating with the addition of zinc/aluminum – Increased Longevity 3-4 times – Rust and Corrosion Resistant – Deters Predators”

What kind of fence to choose? That was the easy part! Several years ago I saw an article in David Kline’s Farming Magazine about an electrified, high-tensile woven wire. My parents have used it on their farm with great success so without hesitation, we decided to use that for a large percentage of our farm as well. This wire is really fantastic because it is easier to hang on Vermont topography than regular woven wire but it is much more effective than 5 or 7 strands of HT smooth wire.

The specs on this fence are 7-36-24, so it has seven strands of horizontal wire at a total height of 36” and verticals every 24”. We put a ground wire on the ground and hang the fence up 6”. This amount can vary with the terrain, but we try to keep it less than 9” and more than 4”. We also string a hot wire 8” above the top of the wire. So the total fence height is about 48”. Insulators must be put on each post, however we don’t insulate every strand, just 3-4 per post. On corners we slide a piece of 3/4” pvc down between the post and wire during tensioning or staple a few 3/8” fiber rods around the outside of the post before tensioning.

Close up of the "powerlock knot"

Close up of the “powerlock knot”

The fence is wired with maximum flexibility in electrification options. We can just make the top wire hot to keep cows & horses from reaching over and to provide an electricity source for electronet subdivisions. This gives the animals a chance to eat down grass right along/under the fence. Or we can electrify the whole fence whenever needed to keep them from rubbing on it, to train livestock and/or predators. Because it is woven wire it provides a visible physical barrier for the animals.

Because there is so much less wire in this fence than most woven wire, it is less expensive so it fits into an NRCS budget more easily. Given that it holds animals more effectively than smooth wire, is easier to install and less expensive than woven wire, it is a clear choice for a large variety of fence applications. This fence is made and distributed by PowerFlex fence in MO. They are a small company that offers competitive prices and fantastic customer service and support. They also sell a heavy-duty waterline and fittings that are ideal for livestock water systems. Check them out online: www.powerflexfence.com

In the interest of full disclosure, I’ll tell you that I’m not affiliated with the company in any way. I think that there are folks in the Northeast who could really benefit from knowing about and taking advantage of this fantastic fence. We’re installing over 7,000′ of it this year. My folks have had theirs for almost 5 years and they love it for sheep, goats, cows and horses.

ClicktoJoin Now we’re on to the biggest challenge of any fencing project – installing it. We’ve got about 1200′ up, only ~6,000′ to go!



						
				
		
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About the author

Rebekah Perry farms with her husband Neal at their diversified farm in Brownington, VT. They raise grassfed beef, lamb & freerange broilers using horse power for much of the haying and manure spreading. See more at www.nealperryfarm.com.

8 Comments

  1. Alan C. Bonds says:

    I notice that most farms choose electric fence over the other types of fence. I guess it’s safer to and more secure to use this kind of fence. I just wonder if they are more expensive compared to the other types of fences available in the market?

    • Rebekah Perry says:

      Hi Alan,
      There is a huge variety of fence styles & types to choose from in the electric fence category and probably more in the non-electric category. This means a huge variety of prices ranges as well. Generally speaking, if animals are trained to electric fence it is less expensive for an equal rate of effectiveness.

      For example, one single strand of electric fence costs less to install than a single wood rail, and is also more effective. That said, I don’t recommend a single strand to keep anything in – or out.

      We found this fence to be very effective in containing both animals and cost. Hope this helps.

      -Bekah

  2. Steve Freeman says:

    We’ve installed miles of high tensile woven wire and really like it for perimeter fences. Though we don’t raise sheep anymore we’ve found it to be great for keeping newborn calves from jumping through the fence as they sometimes do when they hit electrified multi-wire single strand fencing. Once we learned a few easier techniques for rolling it out and tensioning the wire it became a breeze to install. I wrote some installation tips for our Blog [yes, this is self promotion] on the PasturePro website http://www.pasturepro.com/blog/2010/04/stretching-high-tensile-woven-wire/

    Some areas where we found high-tensile woven wire not to be as good a choice as multi-wire single strand high-tensile wire:

    Working corrals–we use multi-wire single strand fencing for some of our holding pens. Have always worked well even when non-electrified. When bulls get to fighting and one of them gets tossed through the fence it caused no trouble other than tightening up a few wires. With the high- tensile woven wire it stretched and broke the vertical wire when this happened and the entire section needed to be cut out and replaced. So we don’t use it in tight areas where there might be heavy animal pressure.

    Large acreage and heavy grass loads–LIke Rebekah we have switches for every section of the woven wire so we can turn on or off acreage with HT woven wire. Even with a 36 joule charger we found we couldn’t keep the voltage high enough except in smaller areas (10-20 acres). Unlike multi-strand single wire fencing where you can turn off the bottom wires during heavy load periods, woven wire is all on or all off- and there is a lot of wire to electrify in woven wire. However, I think un-electrified it will keep most sheep in–electrifying the woven wire is most important for keeping predators out. And like Rebekah we run a single strand of wire above the woven wire and keep it hot at all times.

    All in all a very nice product and light years ahead of the old field fence [woven wire] of the past.

  3. Debbie says:

    I’d be interested to hear about the NRCS money… what category of funding is it available under. We were told there was no money for fencing, especially perimeter fencing. Thanks!

    • Rebekah Perry says:

      I don’t know the details and I think that NRCS options vary by state, maybe even by region? I know that much of this contract is excluding animals from areas for various reasons: wetlands, sugarbush, roads, etc.

    • Bruce Howlett says:

      There is some disagreement among and within states as to whether NRCS pay for perimeter fence for a pasture system. A fence used to keep livestock from surface waters should be approved in most places. In some states, depending on the scoring system used to decide how to allocate EQIP funds, a pasture improvement project might not rank high and so may not receive much attention from over-worked NRCS staff. Ask at your local office to find out which way the political winds are blowing in your area.

      Note also that in the Northeast, the NRCS payment rate for fence is based on less-expensive states. Contractors in southern New England charge $7-8/ft for woven wire and $6-7/ft for high-tensile smooth wire fences – 3-4X the payment rate from NRCS. If you build the fence yourself the calculations will differ, but make sure you look closely at and follow the specifications – an NRCS-grade fence can be remarkably expensive.

      Bruce

  4. Rebekah Perry says:

    Prices are subject to change, I’m sure, but we found it to be very economical. A 330′ roll is $133 plus delivery.

  5. Susan Hayes says:

    What a great article! Thanks so much for sharing this fencing idea with readers. Can you tell me more about pricing? Thanks!

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