Going electric?

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~Ray~Gingerich
Posts: 2118
Joined: Mon Jan 05, 2004 10:24 pm
Location: Delaware/Dover

Wondering what charger is right? That can be a confusing issue, there are no set standards and so much confusion over volts, joules and mileage. Here are some links that might help. I think the basic rule is don't skimp on grounding and power. Use low impedance chargers.

http://blog.kencove.com/volts-vs-joules/

http://www.ibiblio.org/farming-connecti ... ncemis.htm
~Ray~ Gingerich
1999 1pair, 2006 2 pair, 2008 2 pair,
2009 23 pair, 2010 39 pair, 2011 67 pair,
2012 115 pair, 2013 160 pair,
2014 152 pair, 2015 174 pair, 2016 178 pair
2017 187 pair, 2018 200 pair, 2019 171pair
2020 233 pair
Steve Martin
Posts: 68
Joined: Sun Feb 23, 2014 9:38 am
Location: Tx/Bastrop

I have approximately an equivalent to an associates degree in EE ac/dc circuit theory. Because of the short distance you will will not have to worry about Bad Connections, weed loads, splices, if you replace the wire every 2 or 3 years then rusty wire should not be a problem either. Insulation could be a problem though.

I assume that your pole is steal or aluminum. In that case the pole will be "ground". The electric fence will be hot. You will need to figure out how to place place some sort of insulating material wire and the pole. On sunny days your system will run like a charm. But, depending in your method of insulating, fog and rain may act like weeds. It will will drain your system. If you get grime on your insulate and it absorbs water it can really suck the power out if your system. On wood power poles fog and grime can cause lots of problems. You won't get a fire, but you might loose all predator protection.


I assume that you want to guard your pole against raccoon and snakes. I noticed that some livestock chargers (solar in particular) did not run continuously, they zap periodically. If a raccoon crosses the "zap zone" between zaps, he could scale the pole. I think snake move slower so as long the charger zaps once every few seconds it would be hard hard for the snake to cross the "zap zone".


edit: word selection - really such the power -> really suck the power
Last edited by Steve Martin on Thu Feb 27, 2014 1:36 pm, edited 1 time in total.
Emil Pampell-Tx
Posts: 6743
Joined: Tue Nov 11, 2003 1:26 pm
Location: Tx, Richmond (SW of Houston)
Martin Colony History: First started in Gretna, La in 1969 with a small homemade house, have had martins ever since at 2 different homes in Texas

regular PVC is probably the best insulator to use around the martin pole, it lasts forever, does not get very dirty, and its readily available.
PMCA Member, 250 gourds, 6 poles, 2traps
~Ray~Gingerich
Posts: 2118
Joined: Mon Jan 05, 2004 10:24 pm
Location: Delaware/Dover

Steve,
Do you know if a higher power Joule/mileage charger would help during extreamly dry conditions? My charger is 6 joule 30 mile unit and cycles every second. It covers a 3 strand 2 acre pasture and all of my poles. I never noticed any problem during dry weather but sometimes get a little arching during wet weather on my insulted guards
~Ray~ Gingerich
1999 1pair, 2006 2 pair, 2008 2 pair,
2009 23 pair, 2010 39 pair, 2011 67 pair,
2012 115 pair, 2013 160 pair,
2014 152 pair, 2015 174 pair, 2016 178 pair
2017 187 pair, 2018 200 pair, 2019 171pair
2020 233 pair
Emil Pampell-Tx
Posts: 6743
Joined: Tue Nov 11, 2003 1:26 pm
Location: Tx, Richmond (SW of Houston)
Martin Colony History: First started in Gretna, La in 1969 with a small homemade house, have had martins ever since at 2 different homes in Texas

One of the companies that mfg the chargers (I think it was something like Zareba, said in their literature that the chargers work better under dry conditions. That seems like the opposite of what I was thinking. So maybe the wet conditions drains some of the power.
PMCA Member, 250 gourds, 6 poles, 2traps
~Ray~Gingerich
Posts: 2118
Joined: Mon Jan 05, 2004 10:24 pm
Location: Delaware/Dover

Yes Emil I believe that would be correct, during dry periods there would be less leakage and the charger wouldn't have to work as hard, during wet periods there would be energy leakage and the low impedance would kick in to deliver more voltage. So I believe that's in reference to the charger itself, not shocking ability.
~Ray~ Gingerich
1999 1pair, 2006 2 pair, 2008 2 pair,
2009 23 pair, 2010 39 pair, 2011 67 pair,
2012 115 pair, 2013 160 pair,
2014 152 pair, 2015 174 pair, 2016 178 pair
2017 187 pair, 2018 200 pair, 2019 171pair
2020 233 pair
Steve Martin
Posts: 68
Joined: Sun Feb 23, 2014 9:38 am
Location: Tx/Bastrop

Emil Pampell-Tx wrote:One of the companies that mfg the chargers (I think it was something like Zareba, said in their literature that the chargers work better under dry conditions. That seems like the opposite of what I was thinking. So maybe the wet conditions drains some of the power.
Yes, the dryer the better, only rain and fog cause problems

Are you attempting to circle the pole with a fence, or are you attempting to put the hot wire directly around the pole (with insulation) itself to stop pole climbers (snakes)?
Steve Martin
Posts: 68
Joined: Sun Feb 23, 2014 9:38 am
Location: Tx/Bastrop

If you plan on using an electric fence charger as a predator guard, I suggest you follow the design from this post. http://www.purplemartin.org/forum/viewtopic.php?p=93410 As someone with an understanding of EE, I like this design because there is a wide section of PVC that is very effective at stopping current leakage. The leakage could be caused by rain, fog and wet dirt. This design looks to solve that potential problem. I would guess that you could use a pet style charger to power 1 to 3 of these guards. If you wish to build such a system, please continue this post so I can keep you informed on potential problems.

PS. If you do build a system like this, be sure to power-off your charge whenever you raise or lower your rack.

PPS. I bit of nerd humor
Al Denton wrote:That should do the trick unless you have a snake that's a good jumper :) Looks nice Sully.
I would say that unless he is a good jumper he would become a good JUMPER
~Ray~Gingerich
Posts: 2118
Joined: Mon Jan 05, 2004 10:24 pm
Location: Delaware/Dover

Steve, good advice about turning the power off. On one of my poles I left the hot wire extend past the insulator pvc pipe and made a half circle around the pole. One day I did a quick nest check and didn't turn the power off, I took a lid off to look inside and then my chin came in contact with the hot wire. Now that's a totally different feeling than touching a wire with your hands.
~Ray~ Gingerich
1999 1pair, 2006 2 pair, 2008 2 pair,
2009 23 pair, 2010 39 pair, 2011 67 pair,
2012 115 pair, 2013 160 pair,
2014 152 pair, 2015 174 pair, 2016 178 pair
2017 187 pair, 2018 200 pair, 2019 171pair
2020 233 pair
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