Posted by Doug on January 20, 2012, 2:17 am
Following several attacks by foxes and invasions by the dog next door,
I have erected an electric fence around my pond. Visits from foxes
seemed to have ceased with the onset of winter. I don't know what
urban foxes do in the winter but the dog from next door is still a
nuisance and seems able to scrabble over even a very high fence.
I don't know yet if the fence will be effective but cats approach the
fence and seem able to sense the electrification. Anyone know if this
is so, can animals sense it?
Doug
Posted by 'Mike' on January 20, 2012, 2:52 am
> Following several attacks by foxes and invasions by the dog next door,
> I have erected an electric fence around my pond. Visits from foxes
> seemed to have ceased with the onset of winter. I don't know what
> urban foxes do in the winter but the dog from next door is still a
> nuisance and seems able to scrabble over even a very high fence.
> I don't know yet if the fence will be effective but cats approach the
> fence and seem able to sense the electrification. Anyone know if this
> is so, can animals sense it?
> Doug
That's a fascinating question Doug. Is it AC or DC? If AC I would/could say
yes because of the frequency but if it is DC ....................?
Mike
--
...................................
I'm an Angel, honest ! The horns are there just to keep the halo straight.
...................................
Posted by Dave Liquorice on January 20, 2012, 5:24 am
On Fri, 20 Jan 2012 01:17:00 -0800 (PST), harry wrote:
> If he's used a commercial one intended for cattle, it works like a car
> ignition coil. ie DC.
Commercial electric fences are pulses of high voltage (2 to 3kV) at 1
to 1.5 second intervals. There isn't much energy required about 0.5
joules for short fences (note this is short in farming terms
<10km...).
You can often hear an electric fence ticking with each pulse,
particulary if it is damp or has vegitation touching it. Cats have
pretty good hearing they may well be detecting the sound rather than
the electric pulse.
--
Cheers
Dave.
Posted by Doug on January 21, 2012, 11:28 am
> > Following several attacks by foxes and invasions by the dog next door,
> > I have erected an electric fence around my pond. Visits from foxes
> > seemed to have ceased with the onset of winter. I don't know what
> > urban foxes do in the winter but the dog from next door is still a
> > nuisance and seems able to scrabble over even a very high fence.
> > I don't know yet if the fence will be effective but cats approach the
> > fence and seem able to sense the electrification. Anyone know if this
> > is so, can animals sense it?
> > Doug
> That's a fascinating question Doug. Is it AC or DC? If AC I would/could say
> yes because of the frequency but if it is DC ....................?
> Mike
Its a pulse so its more like AC. I have an EM detector and it can pick
it up about half a metre away.
Doug.
Posted by Charlie Pridham on January 20, 2012, 3:59 am
> Following several attacks by foxes and invasions by the dog next door,
> I have erected an electric fence around my pond. Visits from foxes
> seemed to have ceased with the onset of winter. I don't know what
> urban foxes do in the winter but the dog from next door is still a
> nuisance and seems able to scrabble over even a very high fence.
> I don't know yet if the fence will be effective but cats approach the
> fence and seem able to sense the electrification. Anyone know if this
> is so, can animals sense it?
> Doug
More likely they have already learnt the hard way!
Our ponds are regular watering holes for all the local cats as well as
assorted wildlife, seems a shame to have to cut off access just because of
one badly controlled dog
--
Charlie, Gardening in Cornwall
Holders of National Collections of Clematis viticella
and Lapageria rosea cvs
http://www.roselandhouse.co.uk
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> I have erected an electric fence around my pond. Visits from foxes
> seemed to have ceased with the onset of winter. I don't know what
> urban foxes do in the winter but the dog from next door is still a
> nuisance and seems able to scrabble over even a very high fence.
> I don't know yet if the fence will be effective but cats approach the
> fence and seem able to sense the electrification. Anyone know if this
> is so, can animals sense it?
> Doug