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Thread: Electric Fence Grounding

  1. #1
    Join Date
    Apr 2007
    Location
    IL
    Posts
    104

    Electric Fence Grounding

    As you can see I’ve been a member for over a decade, so I don’t want this post to be pushed off as a novice question or homeowner seeking answers instead of calling a professional.

    Anyway, my FIL bought a new electric fence. It says in the manual that you can’t place the ground rods for the fence energizer within 50’ of a facility or utility ground system. Can anyone have a logical explanation for this? I would think that if they were close, wouldn’t you want to bond the two together? Any insight would be helpful. Thanks!


    Sent from my iPhone using Tapatalk
    GK

  2. #2
    Join Date
    Oct 2013
    Location
    Wis.
    Posts
    89
    Can I ask what kind of livestock is involved? We install them in dairy barns. We hang a t shaped piece of metal above the cows front shoulders so when they pee or poop they back up and the excrement falls into the gutter.

    I always thought it odd that a farmer could bring a law suit against an electric co. because of a volt on the neutral. then hang a cow trainer above a cows back with 5000 volts on it. and it is never discussed .

  3. #3
    Join Date
    Apr 2007
    Location
    IL
    Posts
    104
    It’s for cattle in an open pasture, maybe 2miles of fence total...probably not even that. He mounted the energizer by his utility pole because that’s where his recepts are....but the instructions state the 50’ sep from utility ground....just curious of why


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    GK

  4. #4
    Join Date
    May 2005
    Location
    Richmond, Virginia
    Posts
    23,502
    My guess is that neither output terminal of the energizer is grounded to the electrical supply, only voltage between them, so the resistance of the earth is necessary to avoid overloading the energizer.

    A schematic of the energizer would help.
    Code references based on 2005 NEC
    Larry B. Fine
    Master Electrician
    Electrical Contractor
    Richmond, VA

  5. #5
    Join Date
    Jun 2003
    Location
    NE (9.1 miles @5.07 Degrees from Winged Horses)
    Posts
    10,055
    We have noticed that keeping them away lowers or removes the impulse that appears on anything attached to the grounded conductor on the secondary of the transformer.

    Moving the rods away from a dairy building removed the impulse from the metal side of the building to earth. IDR the voltage now.

    The one we put up for my brother suggested thee galvanized rods. Done properly 20 miles of fence was doable and they would burn though weeds that happen to grow up into it.

    I havent ran ran into the cow trainers yet.
    Tom
    TBLO

  6. #6
    Join Date
    Mar 2003
    Location
    Vermont
    Posts
    1,742


    Fencers are SWER

    ~RJ~

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