Non electric high tensile... Electrified?!

Help Support CattleToday:

greybeard

Well-known member
Joined
Jul 5, 2012
Messages
20,736
Reaction score
1,749
Location
Cleveland Tx
Induced voltage. I've run into it on ht fences with multiple alternating hot/not hot wires.
Absolutely, tho those relatively low voltage readings on the 'non-electrified' fence could also be bleedover from a wet post, an unseen weed, or even dirt and dust.

The KvA on modern fence energizers can make a lot of things we think of as non-conductors, conductive.
 

sstterry

CT Supporter
CT Supporter
Joined
Jul 8, 2017
Messages
4,756
Reaction score
1,609
Location
Bulls Gap, TN
INDUCTION
A phenomenon known as induction is common with electric fences. This is the transfer of electricity from an electrified wire to a non electrified wire without the wires physically touching each other. This is often mistakenly blamed on insulator leakage. This phenomenon is also more common in areas where the air is damp such as in conditions of fog.
As this phenomenon is a quirk of nature it cannot be stopped from occurring. However, to avoid receiving shocks caused by induction on non electrified fences and gates etc. you can "ground out" the offending fence by connecting a ground wire to all wires on the non electrified fence. Push the end of this wire into the ground as far as possible and this will send all the offending voltage into the ground.

fault.gif

***And to note, Over-head Power Lines do not cause induction because they are a "balanced-feed". Electric Fence Chargers are not balanced.
Power lines are balanced feeds, meaning any current flowing from the source in one direction is matched by the return current in the other direction to the source, or the last transformer. This pairing cancels coupling. Like telephone paired cables not hearing the neighbor's conversations. Like a public address microphone, 100-foot cable doesn’t pick up hum because it’s balanced.
Balanced lines neither radiate nor receive outside fields. Balanced lines do not return through grounds.
 
Last edited:

greybeard

Well-known member
Joined
Jul 5, 2012
Messages
20,736
Reaction score
1,749
Location
Cleveland Tx
Put your truck radio on a weak AM station and park next to an electric fence. It will tell you if you have an inductive load or not, just as driving down a country road under power lines will.
(power line lateral lines are rarely 100% 'balanced'. Too many variables from homes and businesses with bleed current seeking path to ground via things such as water and gas line piping instead of it all returning back thru the neutral as it should)
 
Top