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Terminating stranded wires

Discussion in 'Electrical Engineering' started by Ryan Evans, Feb 5, 2004.

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  1. EEng

    EEng Guest

     
  2. EEng

    EEng Guest

    They are terminals because the underside of the screw head is either
    scored or ridged to provide a friction grip ala wire clamp.


    Or are you instead talking
    The OP was asking about simply wrapping a wire around any old device
    screw, that's what started all this.
    I think we're well past crimp ons now. I've been trying to explain
    the difference between a plain old screw and one that is specifically
    designed to accept wires.
     
  3. Me

    Me Guest

    DoD on my last job required solid THHN or THWN. NO EXCEPTIONS! The specs for the new
    job starting in March are the same.

    Yes the appeals board ruled in your favor. What do you think the inspector will try to
    do on your next inspection?

    Now for screw terminals. If the rest of you do not know what a "screw terminal" is or
    looks like then I suggest you find another field of work. Plumbing might be more up
    your alley. You need to know only two things: Turds cannot flow up hill and payday is
    Friday.





    EEng
    Are you saying that the screws that are threaded into the brass or
    copper plate that are connected to the contact blades and are located on
    the side of the devices is not a terminal? Or are you instead talking
    about the screws used to mount the device? I have had one inspector try
    to order the use of crimp connectors for connecting stranded wire but
    the board of permit appeals ruled against him on the advice of UL labs.
    By the way I have done DOD work and they SOMETIMES specify the use or
    crimp on connectors but specifications are not regulations or laws.
     
  4. Ross Mac

    Ross Mac Guest

    Thanks EEng!
     
  5. Guest

    You are the only one mentioning screws used in the
    assembly of enclosures. I don't know why you are
    fixated on the ridiculous concept that wires would
    be connected to those screws. We are talking about
    terminals here - you know, the places where wires
    get attached. They are part of the terminal meant
    to hold the wire in place, just as you said.

    But it is not as you said in your first reply:
    "It won't pass UL/CSA/VDE or any other code.
    Terminate the wire by crimping/soldering it to a
    terminal such as a spade or ring connector
    then put that to the screw of the device."
    Note that in your response, you did not specify
    where the screw was. You said "the screw of
    the device". Now you insist that when someone
    else talks about a screw and identifies it as
    part of the device terminal, it is a screw used
    in the assembly of enclosures? That's bizarre.

    You first call for a terminal such as a spade
    or ring connector - you now admit that a stranded
    conductor does not necessarily require a spade
    or ring terminal. As I showed, and you confirmed,
    a device such as the socket in your lamp, can
    have terminals with screws, and the bare copper
    stranded wire can be wrapped directly around
    those screws.

    There must be thousands of lamps the Ul has tested
    and passed with bare copper wire wrapped around the
    screws in the sockets' terminals without ring or
    spade terminals, rendering the statement "It won't
    pass UL/CSA/VDE or any other code" incorrect.

    I apologize if I haven't made it clear in this or
    previous posts.
     
  6. EEng

    EEng Guest

    Man what is your major malfunction? You have repeatedly turned things
    around completely several times now. The OP asked if it was okay to
    simply wrap a wire arround a device screw as in one of the screws used
    for assembly. I am the one that said it must be a terminal, not just
    an enclosure screw. For crying out loud read the thread before you
    jump to any more conclusions.

    I don't know why you are
    Have you read any of this thread at all??? I'm the one saying you CANT
    do that. GEEZ

    We are talking about
    No, you have it completely backwards. Are you stupid?
    Again, you are twisting things around. I said a SCREW TERMINAL which
    is different than a normal, every day device screw. Holy shit you're
    dense.
    Have you ever heard of a wire clamp screw, wire terminating screw,
    screw activated terminal? They are all terminals. The screw is part
    of the terminal mechanism but it is NOT okay to simply wrap a wire
    around a screw that is part ot the enclosure assembly, and THAT is
    what the OP originally asked about.
    How can you make it clear when you don't even know who said what or
    about what? I am amazed at how much you have completely twisted
    things around to be bass ackwards from the context ot what was
    said.....what are you, a union electrician or something? GEEZ
     
  7. Ross Mac

    Ross Mac Guest

    Litz wire...I remember that thread....LOL....Ross
     
  8. DarkMatter

    DarkMatter Guest

    Yes, but you learned absolutely nothing from it.
     
  9. Kilowatt

    Kilowatt Guest

  10. Guest

    You now insist that the OP meant, by his term
    "device screws", assembly screws or enclosure
    screws. In your reply to his post, you told
    him to connect the wire to the "device screw".

    Here's your post:
    "It won't pass UL/CSA/VDE or any other code.
    Terminate the wire by crimping/soldering it to a
    terminal such as a spade or ring connector
    then put that to the screw of the device."

    If, in your opinion, that is what he meant, why
    did you advise him to connect the wire to the
    screw of the device?
     
  11. EEng

    EEng Guest

    No I did not. I said as you quote below and STILL get it wrong
    I don't believe this. You just quoted me and yet you STILL get it
    wrong. I said put the TERMINAL to the screw, NOT THE WIRE.
    Good Lord you are DENSE. I have repeatedly stated you can NOT wrap a
    wire around a device screw, that it must be terminated at a TERMINAL,
    whether that be a spade or ring crimp on or a screw actuated terminal.
    What is your problem? Why do you insist on twisting things around
    when you requote my own quote about using a terminal? Geez I hope
    you're not an electrician or engineer. I'm not replying to you again
    after this. There's no hope for you. I'll bet if someone told you
    the sky was blue you'd want to know why they said it was green. You'd
    even requote them.... you said"the sky is blue", so why do you insist
    its green? GEEZUZ FUCKING H CHRIST ON A CRACKER.

    You're either the most ignorant, stupid SOB that ever came down the
    pike or a TROLL. I suspect you're a troll, NOBODY is THAT stupid.
     
  12. Ross Mac

    Ross Mac Guest

    One cannot be an expert at all things...some folks can make this admission,
    others will not.....Electronics is a very large field.....
     
  13. EEng

    EEng Guest

    If you look at the side of that receptacle, you will see a small
    upturned metal tab that when a wire is placed, restrains that wire
    from side slipping out from under the screw cap when tightened. I am
    not talking about the metal link between two receptacle circuits which
    can be snapped off to make two seperate circuits. Also, the
    underside of the screw cap is ridged for a friction grip. It is that
    tab that makes the connection a terminal and not just a plain old
    ordinary hardware store screw. It is the ridging for the friction
    grip that makes the screw not just an ordinary hardware store screw.
    In that case, it is a screw actuated terminal. If that tab were not
    present and there was nothing to restrain the wire from slipping out
    or failing that, if there were no ridging under the screw head then it
    would not be a terminal and it would not satisfy code.

    One more time with clarity....it is NOT okay per code, to simply wrap
    a wire, solid or stranded, around the threads of a plain old every day
    common hardware store screw. To satisfy code, there must be some form
    of restraint, be it clamp, friction grip, restraint, etc.... that
    makes it a terminal. IF one insists on using a standard common screw,
    THEN the wire must be terminated to some form of connecting hardware
    such as a spade or ring connector and THAT applied to the screw.

    I don't know how to make it any simpler than that and its what I've
    been saying all along.
     
  14. Me

    Me Guest

  15. EEng

    EEng Guest

    No, I'm pointing to the site of a terminal manufacturer, AND I'm not
    only a design engineer, I've also been a manufacturing engineer for
    24yrs and owned a manufacturing business for 15 years and am required
    to comply with many codes. NEC be damned, they only write the
    compliance codes, they don't make em. The real pity is the educated
    idiots who can't tell the difference between a standard screw and a
    screw actuated terminal. Fine by me, at least I know all my stuff
    gets green tagged to code.
     
  16. Kilowatt

    Kilowatt Guest

    Excuse me?

    Go **** yourself.


     
  17. DarkMatter

    DarkMatter Guest

    You're both not all that fucking bright.

    DO NOT TOP POST in Usenet!

    This ain't yer outhouse express e-mail! DOH!

    Bone up on Usenet posting protocols.... Doh!
     
  18. DarkMatter

    DarkMatter Guest

    Ouch.

    I wonder how many house fires a year that would allow to occur. :-]
     
  19. Guest

    You still don't get it. You told him to connect a
    wire to a screw which YOU define as an assembly or
    enclosure screw. Whether he puts a ring or spade
    terminal on it is irrelevant. You ought to know
    that you don't put a wire, with or without a spade
    or ring terminal on an enclosure screw or on an
    assembly screw.

    Why on earth would the OP be asking about connecting
    a wire to anything other than a terminal screw? You
    missed the boat, and can't see it. Instead, you rely
    on insults - but insults don't address the issue.
    Your post to the OP creates the erroneous impression
    that all stranded wires must terminate in a ring or
    spade terminal. The simple example of a UL listed
    lamp, where the stranded wires are not connected to a
    ring or spade terminal proves that that is not always
    required.
     
  20. EEng

    EEng Guest

    AAAHAHAHA now THATS funny!
     
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