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Old 09-04-2012, 16:06   #16
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Re: Electric fence for boat

Obviously Dave hasn't been around the electric fences I've been around! You can drive a panic'd cow thru a board fence, wire fence or electric fence I suppose.... but that doesnt mean they dont mind it... and it certainly is not pleasant for humans!
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Old 09-04-2012, 16:09   #17
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I don't think it will end untill time ends. People do not respect themselves let alone what belongs to someone else. Js imo. Electric fence was an idea I had but it got shot down too. Lol
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Old 09-04-2012, 16:09   #18
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Re: Electric fence for boat

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Originally Posted by Cheechako View Post
Obviously Dave hasn't been around the electric fences I've been around!

Maybe it is just that you made the mistake of peeing on 1 and it left a better impression on you.
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Old 09-04-2012, 16:10   #19
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Re: Electric fence for boat

spent my young life on cattle farms, I could drive a herd of cattle through a steel gate never mind an electric fence. ( did manage to drive some through the side of the owners car, thats was a bit of an opps!).

Dave
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Old 09-04-2012, 16:30   #20
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Re: Electric fence for boat

Quote:
Most dinghies are going to be wet enough to make a path to ground somewhere. The ocean is a perfect ground.
Would that not have a detrimental effect on one's own and nearby boats' zincs?
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Old 09-04-2012, 16:32   #21
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Re: Electric fence for boat

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Originally Posted by goboatingnow View Post

using a bigger voltage is creating a "death trap", just bear in mind the legal consequences. your boat is NOT legally your home, it is a means of transportation, many have the right to board it.
Dave
so how much voltage/amps to put the pirates in the drink?
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Old 09-04-2012, 16:39   #22
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Re: Electric fence for boat

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so how much voltage/amps to put the pirates in the drink?
depends on how high he is at the time!!

PS, your electric fence stops AK47 rounds right!!

just kidding

Dave
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Old 09-04-2012, 17:04   #23
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Re: Electric fence for boat

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Why do electric fences shock you if you have shoes on....?
Same reason the mains power shocks you at home even if you have shoes on.....
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Old 09-04-2012, 17:07   #24
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Re: Electric fence for boat

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Same reason the mains power shocks you at home even if you have shoes on.....
explain the reason?

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Old 09-04-2012, 17:10   #25
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Re: Electric fence for boat

bTW the question about ground is actually very valid

On most electric fence systems, the output is not ground referenced , you actually drive a ground wire into the ground to do that, so in a boats case you'd have to hang such wire into the water, Now of course you have on board impressed corrosion generator. Nice.

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Old 09-04-2012, 17:19   #26
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Re: Electric fence for boat

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explain the reason?

Dave
A shoe is not an insulator. In electrical terms it is best described as a resistor. Two shoes can be electrically considered as two resistors in parallel (assuming both feet are on the ground).
Shoes are normally damp(ish) from foot perspiration which also lowers their resistance.

A potential difference (EMF, volts) exists between the live wire and ground and your body (including your shoes and socks) completes the circuit and hey presto, current flows.
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Old 09-04-2012, 17:27   #27
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Re: Electric fence for boat

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Originally Posted by goboatingnow View Post
normal electric fences , would be no deterrent, you can take the shock without t0o much bother. remember they are just there to deter cows, not detain them, any cow can be driven through an electric fence.

using a bigger voltage is creating a "death trap", just bear in mind the legal consequences. your boat is NOT legally your home, it is a means of transportation, many have the right to board it.

Just move elsewhere.


really guys when will this personal protection nonsense end.

Dave
Probably about the time Unarmed cruisers in remote anchorages stop being boarded at night, and killed.
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Old 09-04-2012, 17:29   #28
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Re: Electric fence for boat

Quote:
Originally Posted by goboatingnow View Post
bTW the question about ground is actually very valid

On most electric fence systems, the output is not ground referenced , you actually drive a ground wire into the ground to do that, so in a boats case you'd have to hang such wire into the water, Now of course you have on board impressed corrosion generator. Nice.

Dave
I was planning to stay out of this thread but somehow.......
Yes, you always need two points for a potential difference to exist. Making the ground one of them is sensible for an electric fence used for stock control as that is what the stock on

As for a boat, the choices are partly dictated by the degree of engineering one is willing to go to. Some ideas could be:
Top and bottom lifeline i.e. both insulated from each other.
Top lifeline and a metal toe rail.
Lifelines and stanchions; this would require touching both at the same time for the shock to be delivered.

I am only looking at the electrical aspects, I have no interest in the deterrent aspects.
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Old 09-04-2012, 17:31   #29
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Re: Electric fence for boat

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Would that not have a detrimental effect on one's own and nearby boats' zincs?

Without a careful install,.....well yes.
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Old 09-04-2012, 17:31   #30
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Re: Electric fence for boat

I have seen electric fence setups that do not depend on a traditional ground but instead rig two lines instead of one. The second line acts as the "ground". The "intruder" would have to touch both to be zapped.
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