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Determination of Electric Fence Voltage

01/22/2012 3:54 AM

I have acquired an old (manufactured ~1960) slow-pulse electric fence controller for which I can find no specs. I'd like to set it up to power ~ 750 ft of standard electric fence wiring (250 ft of 3 strands) around a garden as a deer repellent. I don't know of a simple way to determine the voltage output of this controller which is most likely to be at least several kV. Tractor Supply claims s requirement of 6000 volts to be effective against deer. Given these few details, can anyone out there provide me with some tips or words of wisdom about this? Thanks.

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#1

Re: Determination of Electric Fence Voltage

01/22/2012 9:00 AM

Don't waste your time with an electric fence. Tho ONLY way to keep deer out of the garden is to build a fence high enough that they can't jump over it. That would be 8-10 feet tall, woven wire.

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#4
In reply to #1

Re: Determination of Electric Fence Voltage

01/22/2012 3:00 PM

GA Lyn. You it hit the nail on the head on this one. I started off with an electric fence, but ended up going to 11 feet tall, all the way around my garden.

And as far as using a '60s era fence charger, your better off keeping it as a novelty and investing in a solar powered fence system, they're self contained, no external power source and will energize 1 mile of fence line. I've had mine for 11 years now and the only thing I've had to do was to replace the battery once so far.

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#2

Re: Determination of Electric Fence Voltage

01/22/2012 10:09 AM

Didn't quite make it...

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#3
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Re: Determination of Electric Fence Voltage

01/22/2012 10:16 AM

probably nice piece of free meal.

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#5

Re: Determination of Electric Fence Voltage

01/22/2012 11:52 PM

Yeah some kind of good deer steak and a mug beer.

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#6

Re: Determination of Electric Fence Voltage

01/23/2012 4:55 AM
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#7

Re: Determination of Electric Fence Voltage

01/23/2012 5:58 AM

Those old chargers are very powerful, outputting 6000 plus volts.The pulse is "weed chopper" mode, that will burn thru small weeds and grass.The trick to using it to keep deer out, is to slant the fence outward at the top,about 3 feet on a 8ft. high fence.This discourages jumping, and is very effective.

A browsing deer will encounter the wire on his neck, and impulsively rear up his head, which will give him another shock.They can't get close enough to jump it because of the slant.

I would use barb wire to enhance fur and hide penetration.Normally sold in 1/4 mile spools.

Depending on soil conductivity, you may need to run a ground wire between the hot wires.Deer have hooves, which are insulators when dry, and if they are on dry leaves, it is even harder to deliver a shock.I even ran mine thru a HV multiplier from a color TV, but it was such a high voltage (25K) it arched across my insulators.I found that running a ground wire about 2 inches below the hot wire did the job.

Deer learn fast,so after a while they quit trying.

Unlike a goat.

Good luck!

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#8
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Re: Determination of Electric Fence Voltage

01/23/2012 6:14 AM

Thanks for the great advice on this!

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#9

Re: Determination of Electric Fence Voltage

01/23/2012 7:33 AM

I agree - electric won't work.

I have a 4ft fence (keeps the smaller critters out) and then two strands of plastic caution tape...like crime scene tape...loosely tied at 5ft and 6ft. It moves enough to deter them from jumping the fence. I remove the tape at the end of the season and they jump right in and clean up the remains saving me some work!

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#10

Re: Determination of Electric Fence Voltage

01/23/2012 12:23 PM

If you put in a permanent electric fence unit you will need to ensure that the earthing of it is good. Drive a a stake specifically for it and ensure that this earth electode is further than 10m away from any other earth electrode.

Modern electric fences are rated in Joules and a mains unit will run many kilometers of fencing.

The insulating effect of hooves is the same for all livestock: even humans wearing rubber soled shoes will get a good shock - experience.

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#11

Re: Determination of Electric Fence Voltage

01/23/2012 1:02 PM

As someone who has fought the deer war, some advice. When you install the fence, the deer need trained to avoid it. Once they get in the habbit of Not going through an area, most of your problems will be over. Take tin foil and wrap around the wire and cover with peanut butter. One lick is usually all it takes. Of course each one has to have a turn, so keep the PB on the wire for a week or so. Any deer that jump the fence are candidates for the freezer. I have some excellent recipes. If you can't eat beans, eat deer.

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#12
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Re: Determination of Electric Fence Voltage

01/23/2012 5:58 PM

Excellent advice and a clever tip - have another GA

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#13

Re: Determination of Electric Fence Voltage

01/23/2012 8:23 PM

Hi Guys,

When I was a young boy (and very stupid) I pissed on one of those fences.

I learned very fast.

Later in my life my wife and I raised goats and we learned the hard way that goats are very hard to control.

But one duck (we also raised ducks) got zapped on the lower wire and flipped upside down; but it's legs were still walking. It survived. Until we ate it.

Those mechanical fencer put out about 7 KV.

When I found out that 7 KV was not enuff for the goats. I built a fencer from an ignition coil (25KV) and that was still not enuff to keep the goats out.

But it sure felt like a 12 Lb. sledgehammer hitting my arm when it jumped my screwdriver.

I still had not learned to stay away from HV.

TTYL Jens

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#15
In reply to #13

Re: Determination of Electric Fence Voltage

01/24/2012 8:42 PM

I have had my experience with goats.NEVER try to out-stubborn a goat.I had one I called Houdini,cause he could get out of anything.Not only that, he showed the cows how to get out.And the horses.He would wait for a rain, then sniff the fence for ozone, and if it was grounded out, like it usually was after a storm, out he would go to the soybean field and wreak havoc.I learned that you never beat a goat, you eat a goat.Roasted slowly over charcoal.3 months after gelding him, to reduce the strong smell.Not as good as deer, but not to bad with Tabasco and BBQ sauce.I had to eat the whole thing myself, because my wife and kids would not touch it.It took 3 days,and by the time I took the last bite, I was glad to be finished.(Although I did have a hard time keeping it down, I was determined to win this final round and I did.)

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#16
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Re: Determination of Electric Fence Voltage

01/24/2012 10:06 PM

Love that story

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#14

Re: Determination of Electric Fence Voltage

01/24/2012 7:07 PM

I had a horse who became addicted to "cribbing", chewing on wood fence rails and using them to burp (it's from boredom). To keep from having to replace fence boards all the time, we electrified them. Only after doing that did we realize that we were losing a lot of feed (alphalpha) to deer, because once the fence went hot, the deer stopped coming in at night and our feed lasted longer. It wasn't that high, maybe only 5ft. But it was white, so maybe once the deer learned that the white fence hurt, they stayed away.

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#17

Re: Determination of Electric Fence Voltage

01/26/2012 12:23 PM

As an adjunct to any fence I found a chemical repellent that works well. Nothing beats the high fence, but sometimes you have plants that aren't in the garden area that you still want to protect. The product is called, "Deer Out." It is mixed and sprayed on the leaves of the plant to be protected and can last up to 3 months, even with rains. I have no affiliation with the product or company, except as a satisfied customer. You will have a slight, but tolerable odor to put up with, but it beats the heck out of discovering a stripped plant that had all it's leaves the day before. And like all products, for whatever reason, some people don't have the same experience as I have had.

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