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  1. #1
    Pete Busch's Avatar
    Pete Busch Guest

    Default What is this device?

    Hi everyone, this is my first post here, just found the site. Anyways can someone here tell me what the item is in the attached picture. The item I am referring to is in the smaller box next to the main panel labeled 200 in yellow letters. I have never seen this before, there is two meters outside and it appear this has something to do with it. I have never seen two meters on one house before and none of the other houses on that block had two meters like this.
    Thanks for looking
    Pete Busch

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  2. #2
    A.D. Miller's Avatar
    A.D. Miller Guest

    Default Re: What is this device?

    It is an ABB current transformer.


  3. #3
    Join Date
    Dec 2007
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    Chico,Ca
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    423

    Default Re: What is this device?

    As said already, it's a CT I would guess it has something to do w/ the 2nd WHM (cash register ) in the last picture.

    Edit: My guess this gear is tied to the air conditioning & the box above the meter is for PoCo to remote control the A/C.


  4. #4
    Pete Busch's Avatar
    Pete Busch Guest

    Default Re: What is this device?

    Ok, why is it there and what is its purpose?


  5. #5
    A.D. Miller's Avatar
    A.D. Miller Guest

    Default Re: What is this device?

    Quote Originally Posted by Pete Busch View Post
    Ok, why is it there and what is its purpose?
    PB: Now you will have to wait on the sparkys for the rest of that answer. It is over my pay grade . . .

    Last edited by A.D. Miller; 03-25-2010 at 06:18 AM.

  6. #6
    Join Date
    Sep 2007
    Location
    Fredericksburg, VA
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    885

    Default Re: What is this device?

    Google "ABB Type CSF Transformer" and you get from ABB

    The CSF is a miniature current transformer used for indoor and outdoor metering applications. Used with watthour meters, it is applicable to single or multiphase low voltage circuits. The CSF is used with flat and high bases and brackets such as the TMB-3.

    The above statements are expressed solely as my opinion and in all probability will conflict with someone else's.
    Stu, Fredericksburg VA

  7. #7
    Join Date
    Mar 2008
    Location
    Charlotte NC
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    2,303

    Default Re: What is this device?

    Quote Originally Posted by Stuart Brooks View Post
    Google "ABB Type CSF Transformer" and you get from ABB

    The CSF is a miniature current transformer used for indoor and outdoor metering applications. Used with watthour meters, it is applicable to single or multiphase low voltage circuits. The CSF is used with flat and high bases and brackets such as the TMB-3.
    I guess the question is (I know my question is), why is it used in this residential property? What was the need?


  8. #8
    Join Date
    Sep 2007
    Location
    Fredericksburg, VA
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    885

    Default Re: What is this device?

    Quote Originally Posted by Vern Heiler View Post
    I guess the question is (I know my question is), why is it used in this residential property? What was the need?
    I would assume it is supplying a current value to a watt meter. Maybe someone checking the accuracy of the POCO meter? Or, measuring the power required on a specific circuit or device? The exact reason would require asking the owner of the property or POCO.

    The above statements are expressed solely as my opinion and in all probability will conflict with someone else's.
    Stu, Fredericksburg VA

  9. #9
    James Duffin's Avatar
    James Duffin Guest

    Default Re: What is this device?

    Did you happen to notice what the circuits feeding through the CT were supplying power to? That info may help understand why it is there.


  10. #10
    dana1028's Avatar
    dana1028 Guest

    Default Re: What is this device?

    Quote Originally Posted by Rollie Meyers View Post
    As said already, it's a CT I would guess it has something to do w/ the 2nd WHM (cash register ) in the last picture.

    Edit: My guess this gear is tied to the air conditioning & the box above the meter is for PoCo to remote control the A/C.
    That sounds right - in my area the PoCo has a program to reduce your rates if you have one of these devices on your equipment; that way during peak periods the PoCo can cut power to certain areas of the city, certain types of loads, etc. - So, for 365 days a year you get a discounted PoCo rate in exchange for a couple of days [maybe] of reduced power to certain types of loads.


  11. #11
    Join Date
    Jul 2008
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    Snowbird (this means I'm retired and migrate between locations), FL/MI
    Posts
    4,086

    Default Re: What is this device?

    Peak demand cycling for AC or Heat pump Condensor and/or electric water heater, etc. "Load Management" program.

    Transformer is part of the CT metering system.

    P.S. Guess we don't need to say anything about the drywall/panel cabinet installation issues .

    Last edited by H.G. Watson, Sr.; 03-30-2010 at 06:46 AM. Reason: post script

  12. #12
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
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    26,252

    Default Re: What is this device?

    Quote Originally Posted by H.G. Watson, Sr. View Post
    P.S. Guess we don't need to say anything about the drywall/panel cabinet installation issues .
    That was left open so we could see the nail protector plate.

    I know, it is not just the gap and space around the panel enclosure but the fact that the panel is set back in at or beyond the inner face of the drywall when the maximum recessed amount with gypsum board is 1/4", and ... ... it does extend out beyond the combustible stud ...

    Be that as it may, it may be a good issue to discuss for those who are not aware of it.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

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