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Electric Fence energizer and Earth Wire

HillLuing

Member
We recently installed a new large electric energizer that is going to have to do alot of Km's!

How important is it having an insulated cable from the earth terminal to the earth rods??

We currently just have a plain wire between but it does run along the top of a concrete wall, along the ground and through a fence before it is connected to the earth rods!

Will this affect the performance alot or does it not matter overly much???
 

neilo

Member
Mixed Farmer
Location
Montgomeryshire
We recently installed a new large electric energizer that is going to have to do alot of Km's!

How important is it having an insulated cable from the earth terminal to the earth rods??

We currently just have a plain wire between but it does run along the top of a concrete wall, along the ground and through a fence before it is connected to the earth rods!

Will this affect the performance alot or does it not matter overly much???

I really can’t see that it would make any difference whether the earth wire was insulated or not. You do need a good conductor, so any big wire(s) will do I would have thought. The worst it can do without an insulator is to connect to earth better.
We used to use a couple of lengths of spring steel wire between the mains fencer, over a wall, to the 3 earth stakes pushed into the ground with a telehandler.
 

kill

Member
Livestock Farmer
Location
South West
the better the earth, the better the fencer, our big fencer, has 4 stainless steel pipes, 1 metre apart, and 5 foot deep, into damp ground, fencer works a treat, under heavy load
My earth for the mains fencer is a steel post internally in a shed into concrete and Christ the fencer has some belt
 

som farmer

Member
Livestock Farmer
Location
somerset
when you get it right, those mains fencers are sheer evil. With them, I can't really see how the portable/battery ones, work as well as they do. Apparently, you are not meant to earth them on a barns girders, we have 3 mains fencers, one of them is attached to 26 barn uprights, and the roof joins them together, that one is evil to.
 

Sid

Member
Livestock Farmer
Location
South Molton
when you get it right, those mains fencers are sheer evil. With them, I can't really see how the portable/battery ones, work as well as they do. Apparently, you are not meant to earth them on a barns girders, we have 3 mains fencers, one of them is attached to 26 barn uprights, and the roof joins them together, that one is evil to.
But why not to a shed?

  • The energiser earth cable must not touch buildings, which can act as a broadcast aerial. Use double insulated (HTG) cable or run the wire to earth using HOTLINE insulators.
 

milkloss

Member
Livestock Farmer
Location
East Sussex
But why not to a shed?

  • The energiser earth cable must not touch buildings, which can act as a broadcast aerial. Use double insulated (HTG) cable or run the wire to earth using HOTLINE insulators.
I would guess interference... telecoms, wifi and maybe upsetting sensitive electrical component.
 

digger64

Member
We recently installed a new large electric energizer that is going to have to do alot of Km's!

How important is it having an insulated cable from the earth terminal to the earth rods??

We currently just have a plain wire between but it does run along the top of a concrete wall, along the ground and through a fence before it is connected to the earth rods!

Will this affect the performance alot or does it not matter overly much???
Might if you have a "nearly " live short (cracked insultion )near the bare earth wire , if a cow ,you or damp drizzle complete the circuit through say a wall or drippy join on alkathene pipe then get a live water tank or stantion (which may not affect you in wellies but you will wonder why the cows dont drink at that trough though)in say wet damp weather power always takes the shortest route , would stop power going out to the fence further away , I have walked miles to find the problem 25 ft from the energiser whilst the fence was being pushed over half a mile away ! We had taken on this system installed with 2nd hand electricians /BT wires it was really frustrating hard work for a couple of years - the proper stuff is very cheap IMHO .
 
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Al R

Member
Livestock Farmer
Location
West Wales
The best I’ve heard is 4x 20’ motorway barriers knocked in full depth with a post banger. Only once I’ve used a mains and it wasn’t very good ( I could tie steel wire back together when it broke) the earth for that was a subsoiler leg thrown in the pond by the field.
 

som farmer

Member
Livestock Farmer
Location
somerset
The best I’ve heard is 4x 20’ motorway barriers knocked in full depth with a post banger. Only once I’ve used a mains and it wasn’t very good ( I could tie steel wire back together when it broke) the earth for that was a subsoiler leg thrown in the pond by the field.
you should have thrown it deeper ! Would quite like you to come and rejoin ours ! Any short outs on the line, are usually audible or see-able. If not, something has come down on the line. The days of cattle going through fences, pretty well gone, everything born till 1st jan, is behind elec, soon be training this springs calves. But we do move 3 or 4 fences a day.
 

Treecreeper

Member
Livestock Farmer
Not wishing to hijack this thread but I would like some info as well. I currently have a mains unit running lots of km's and would like to add a considerable extra run for which the existing one would struggle. The question is how close to the existing earth could I add an additional unit without compromising one or both?
Thanks.
 

som farmer

Member
Livestock Farmer
Location
somerset
when we did our earth, we kept putting ss earth rods in, till they stopped earthing, or when you couldn't hear the snick, or see the flash.
 

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Webinar: Expanded Sustainable Farming Incentive offer 2024 -26th Sept

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On Thursday 26th September, we’re holding a webinar for farmers to go through the guidance, actions and detail for the expanded Sustainable Farming Incentive (SFI) offer. This was planned for end of May, but had to be delayed due to the general election. We apologise about that.

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