Fence Question

The place to start if you are new!
redandblack
Cowhand
Cowhand
Posts: 28
Joined: Mon Apr 24, 2017 11:50 am

Fence Question

Postby redandblack » Sat Jun 03, 2017 10:53 am

Can you hook a fence charger up in the middle of the fence and have electricity running both ways through the same wire? It would not be be a continuos loop. Switching to 110v charger instead of electric and power source sits right in middle of fence. Also if I run 2 legs off my charger to two separate fences does it split the output joules in half for each fence?
Thank you for the responses in advance
0 x

redandblack
Cowhand
Cowhand
Posts: 28
Joined: Mon Apr 24, 2017 11:50 am

Re: Fence Question

Postby redandblack » Sat Jun 03, 2017 10:54 am

Sorry instead of Solar
0 x

User avatar
Jogeephus
Mentor
Mentor
Posts: 23430
Joined: Mon Jul 17, 2006 9:44 pm
Location: South Georgia

Re: Fence Question

Postby Jogeephus » Sat Jun 03, 2017 11:04 am

Mine are not continuous and the charger is hooked randomly to the wire and you wouldn't want to pee on the fence on either side of the connection. Don't know what happens with the joules. Good question.
0 x
Experience - the ability to instantly recognize a mistake when you make it again.

talltimber
GURU
GURU
Posts: 1237
Joined: Wed Apr 16, 2014 6:29 pm
Location: Southeast Missouri

Re: Fence Question

Postby talltimber » Sat Jun 03, 2017 11:34 am

I would assume so, since the forumula for joules uses A. Amperage in parallel circuits is additive. Voltage is uniform to the branches. Iirc.
0 x
If you cross the river before, leave a good horse on this side.

User avatar
1982vett
GURU
GURU
Posts: 8003
Joined: Sun Feb 03, 2008 8:57 pm
Location: Central Texas

Re: Fence Question

Postby 1982vett » Sat Jun 03, 2017 11:55 am

Current is going to find the path of least resistance.....where it goes to ground,that is the route the current will take.

The wire is energized.....Kinda like a crazy cow in a pen looking for a hole. When it finds one........
0 x
Any man who can drive safely while kissing a pretty girl is simply not giving the kiss the attention it deserves. ~Albert Einstein
Never kick a fresh turd on a hot day. ~Harry S. Truman

User avatar
Jogeephus
Mentor
Mentor
Posts: 23430
Joined: Mon Jul 17, 2006 9:44 pm
Location: South Georgia

Re: Fence Question

Postby Jogeephus » Sat Jun 03, 2017 12:42 pm

talltimber wrote:I would assume so, since the forumula for joules uses A. Amperage in parallel circuits is additive. Voltage is uniform to the branches. Iirc.


That is what I'd think otherwise this would be the solution to our energy needs. I'm sure both will still pack a sting.
0 x
Experience - the ability to instantly recognize a mistake when you make it again.

jnm303
Cowhand
Cowhand
Posts: 27
Joined: Mon Jun 30, 2008 10:01 pm

Re: Fence Question

Postby jnm303 » Sat Jun 03, 2017 1:33 pm

I have had two fences hooked up this way for years with no problems
0 x

User avatar
greybeard
Mentor
Mentor
Posts: 14518
Joined: Thu Jul 05, 2012 5:51 pm
Location: Cleveland Tx

Re: Fence Question

Postby greybeard » Sat Jun 03, 2017 8:04 pm

redandblack wrote: Can you hook a fence charger up in the middle of the fence and have electricity running both ways through the same wire? Also if I run 2 legs off my charger to two separate fences does it split the output joules in half for each fence?

The effect of the energizer being in the middle of the fence instead at one end will be negligible.
It won't be zero effect or immeasurable, but you probably don't have an instrument sensitive enough to measure the difference. Neither do I or most folks.

But, the very minute difference is in your favor. The severity of the shock you or a cow feels depends on resistance. Joules is a measure of energy, and is a 'product of voltage, work, time and resistance in the circuit.

The more resistance between source and measuring point means less voltage, but since the shock doesn't actually occur until the positively charged pulse returns to the negative terminal on the energizer's board, the resistance in the soil is part of the equation.
The further the point from the energizer that the cow gets shocked at means there is more resistance in the circuit. It also means it takes that pulse longer to make the trip from the output of the fence charger, down the wire, thru the cow, out it's feet, into the ground and back to the charger. Can you measure the difference? No, but it's there.
(Joules formula needs voltage, resistance, and work. Amps is not a unit of work--current has to be converted to watts before calculating joules)
0 x
"For evil to flourish, all that is required is for good men to do nothing" Burke

It ain't easy being a used cow salesman.

talltimber
GURU
GURU
Posts: 1237
Joined: Wed Apr 16, 2014 6:29 pm
Location: Southeast Missouri

Re: Fence Question

Postby talltimber » Sat Jun 03, 2017 8:35 pm

But to clarify, P=IE
P is expressed in watts
I is current or amperage expressed as amps
E= volts
t = time in seconds
So, yes, amps is an element of the joules formula which is J=Pt
You can't "convert" amps to watts. You can use the amperage in conjunction with voltage to calculate P (watts)
So I think that is what would make your branches carry an unequal joule amount?
0 x
If you cross the river before, leave a good horse on this side.

User avatar
greybeard
Mentor
Mentor
Posts: 14518
Joined: Thu Jul 05, 2012 5:51 pm
Location: Cleveland Tx

Re: Fence Question

Postby greybeard » Sat Jun 03, 2017 9:58 pm

Perhaps, but again, it would be miniscule but not zero.
Resistance from point of source to shock and back to the charger matters more.
That's why chargers are sold and marketed according to the number of miles or acres they can handle.
0 x
"For evil to flourish, all that is required is for good men to do nothing" Burke

It ain't easy being a used cow salesman.

User avatar
Brute 23
GURU
GURU
Posts: 6395
Joined: Thu Apr 19, 2007 7:59 pm
Location: South Texas Gulf Coast

Re: Fence Question

Postby Brute 23 » Sat Jun 03, 2017 10:17 pm

Im a little rusty on this but if you happened to have two points of resistance, one one each side... would it drop the joules significantly vs being it a line and two hitting at the same time?
0 x
Brimmer Pimpin Ain't Easy

User avatar
greybeard
Mentor
Mentor
Posts: 14518
Joined: Thu Jul 05, 2012 5:51 pm
Location: Cleveland Tx

Re: Fence Question

Postby greybeard » Sat Jun 03, 2017 10:33 pm

If you mean two animals hitting the wire at once, then no, not significantly. Joules is energy expended--in one split second of time. The shock takes place in a fraction of a second because the current is flowing at the same rate the electrons are..at or near the speed of light.
0 x
"For evil to flourish, all that is required is for good men to do nothing" Burke

It ain't easy being a used cow salesman.

User avatar
Bigfoot
Mentor
Mentor
Posts: 11122
Joined: Mon Jan 16, 2012 6:31 pm
Location: Kentucky

Re: Fence Question

Postby Bigfoot » Sat Jun 03, 2017 10:44 pm

I've been wondering something, since this thread started:

When I was a kid, all of our electric fences were one strand of barbed wire, ran like an old school electric fence. Small cedar post, drove in the ground, and one strand of hot barbed wire. Seems like the two strands of wire, wrapped together would add resistance. -----------So does a strand of barbed wire, make a good conductor?
0 x
A tumble bug makes a hard livin. Why? Cause that's just the way be nice is.

User avatar
greybeard
Mentor
Mentor
Posts: 14518
Joined: Thu Jul 05, 2012 5:51 pm
Location: Cleveland Tx

Re: Fence Question

Postby greybeard » Sun Jun 04, 2017 12:00 am

Electrons move along the wire by moving from one wire atom to the next. The bigger the cross section, (wire diameter) the more wire (conductor) atoms available for the electrons to move along. Double the # of strands, it's still easier. Voltage will be the same (8000v) on each wire.
Think of it like a water hose. Using the same pump on both, you can pump water thru a 2" hose faster and easier than thru a 1/4 hose.
0 x
"For evil to flourish, all that is required is for good men to do nothing" Burke

It ain't easy being a used cow salesman.


Return to “Beginners Board”

Who is online

Users browsing this forum: No registered users and 5 guests